Clytia hemisphaerica Development and Anatomy Ontology (CLYH)
type: Ontology
version IRI: clyh.owl
description: Anatomy, development and life cycle stages - planula, polyp, medusa/jellyfish - of the cnidarian hydrozoan species, Clytia hemiphaerica.
license: https://creativecommons.org/licenses/by/3.0/
comment: Clytia hemisphaerica Development and Anatomy Ontology

definition
type: AnnotationProperty

citation
type: AnnotationProperty

part of
type: ObjectProperty

immediately preceded by
type: ObjectProperty

develops from
type: ObjectProperty

existence starts during
type: ObjectProperty

existence ends during
type: ObjectProperty

gametogenesis
type: Class
subclass of: life cycle stage

gametogenesis period
type: Class
subclass of: life cycle stage
subclass of: Restriction
  on property: part of
  some values from: gametogenesis
definition: phase of sexual reproduction in which certain cells of a female or male individual (parent) are transformed into specialized reproductive cells (gametes) that will initiate development of a progeny individual (offspring) upon fertilization.

oogenesis period
type: Class
subclass of: life cycle stage
subclass of: Restriction
  on property: part of
  some values from: gametogenesis period

previtellogenic stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: oogenesis period
definition: Entered into meiosis, DNA replicated, no yolk accumulation.

oocyte growth period
type: Class
subclass of: Restriction
  on property: part of
  some values from: oogenesis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: previtellogenic stage

stage I oocyte growth stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: oocyte growth period
subclass of: Restriction
  on property: immediately preceded by
  some values from: previtellogenic stage
definition: Meiotic Prophase I arrest, GV in centre, diameter x
citation: Amiel and Houliston Dev. Biol (2009)

stage II oocyte growth stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: oocyte growth period
subclass of: Restriction
  on property: immediately preceded by
  some values from: stage I oocyte growth stage
definition: Meiotic Prophase I arrest, GV off centre, diameter x
citation: Amiel and Houliston Dev. Biol (2009)

stage III oocyte growth stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: oocyte growth period
subclass of: Restriction
  on property: immediately preceded by
  some values from: stage II oocyte growth stage
definition: Meiotic Prophase I arrest, GV off centre, diameter x
citation: Amiel and Houliston Dev. Biol (2009)

oocyte meiotic maturation
type: Class
subclass of: Restriction
  on property: part of
  some values from: oogenesis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: stage III oocyte growth stage
definition: oocyte undergoing meiosis completion from prophase I to G0 of first meiotic cycle
citation: Amiel and Houliston Dev. Biol (2009)

spermatogenesis period
type: Class
subclass of: life cycle stage
subclass of: Restriction
  on property: part of
  some values from: gametogenesis period

spermatogonium stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: spermatogenesis period

spermatid stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: spermatogenesis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: spermatogonium stage

embryonic development
type: Class
subclass of: life cycle stage
subclass of: Restriction
  on property: immediately preceded by
  some values from: gametogenesis

gamete period
type: Class
subclass of: life cycle stage
subclass of: Restriction
  on property: part of
  some values from: embryonic development
subclass of: Restriction
  on property: immediately preceded by
  some values from: gametogenesis period

unfertilized egg stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: gamete period
subclass of: Restriction
  on property: immediately preceded by
  some values from: oocyte meiotic maturation
definition: matture female germ cell. not yet fertilized. Meiotic divisions complete. Spawned egg with female pronucleus.
citation: Amiel and Houliston Dev. Biol (2009)

spermatozoid stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: gamete period
subclass of: Restriction
  on property: immediately preceded by
  some values from: spermatid stage
definition: mature male germ cell.

cleavage period
type: Class
subclass of: Restriction
  on property: part of
  some values from: embryonic development
subclass of: Restriction
  on property: immediately preceded by
  some values from: gamete period

one cell stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: cleavage period
subclass of: Restriction
  on property: immediately preceded by
  some values from: gamete period
definition: Zygote fertilized egg, zygote nucleus forms at animal pole (about 0-50 min post fertilization at 18 degree celsius).
citation: Y. Kraus et al in preparation?
has exact synonym: fertilised egg
has exact synonym: zygote

2-cell stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: cleavage period
subclass of: Restriction
  on property: immediately preceded by
  some values from: one cell stage
definition: Two cell-stage embryo. First cleaveages unipolar and start at the animal pole (about 50-80 min post fertilization at 18 degree celsius).
citation: Y. Kraus et al in preparation?

4-cell stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: cleavage period
subclass of: Restriction
  on property: immediately preceded by
  some values from: 2-cell stage
definition: Four cell-stage embryo. Second cleaveages unipolar and start at the animal pole (about 80-110 min post fertilization at 18 degree celsius).

8-cell stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: cleavage period
subclass of: Restriction
  on property: immediately preceded by
  some values from: 4-cell stage
definition: Eight cell-stage embryo (about 2h post fertilization at 18 degree celsius).

16-cell stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: cleavage period
subclass of: Restriction
  on property: immediately preceded by
  some values from: 8-cell stage
definition: Sixteen cell-stage embryo (about 2.5h post fertilization at 18 degree celsius).

32-cell stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: cleavage period
subclass of: Restriction
  on property: immediately preceded by
  some values from: 16-cell stage
definition: thirty two cell-stage embryo (about 3h post fertilization at 18 degree celsius).

64-cell stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: cleavage period
subclass of: Restriction
  on property: immediately preceded by
  some values from: 32-cell stage
definition: sixty four cell-stage embryo (about 3h post fertilization at 18 degree celsius).

blastula period
type: Class
subclass of: Restriction
  on property: part of
  some values from: embryonic development
subclass of: Restriction
  on property: immediately preceded by
  some values from: cleavage period

early blastula stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: blastula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: 64-cell stage
definition: Cells rounded and loosely adhered, Nuclei central (5-6h post fertilization at 18 degree celsius).

mid blastula stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: blastula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: early blastula stage
definition: Cell contacts extended, cells polarised, nuclei apical (8h post fertilization at 18 degree celsius).

late blastula stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: blastula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: mid blastula stage
definition: Cell polarized and columnar, nuclei apical (9- 10h post fertilization at 18 degree celsius).

gastrula period
type: Class
subclass of: Restriction
  on property: part of
  some values from: embryonic development
subclass of: Restriction
  on property: immediately preceded by
  some values from: blastula period

very early gastrula stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: blastula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: very early gastrula stage
definition: Visible pointed oral pole but no cell ingression, ciliogenesis starting (12-13h post fertilization at 18 degree celsius).

early gastrula stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: blastula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: mid gastrula stage
definition: A few cells ingressed at pointed oral pole, swimming started (14-16h post fertilization at 18 degree celsius).

mid gastrula stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: blastula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: early gastrula stage
definition: Ingression to fill balastotocoel half completed (17- 18h post fertilization at 18 degree celsius)

late gastrula stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: blastula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: mid gastrula stage
definition: Blastocoel full, no epithelisation of internal cells (20h post fertilization at18 degree celsius

planula period
type: Class
subclass of: life cycle stage
subclass of: Restriction
  on property: part of
  some values from: embryonic development
subclass of: Restriction
  on property: immediately preceded by
  some values from: gastrula period
has exact synonym: larval development

planula P1 stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: planula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: late gastrula stage
definition: Epithelisation beginning at aboral pole (as seen at 24h post fertilization at 18 degree celsius)

planula P2 stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: planula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: planula P1 stage
definition: Visible central cavity (as seen at 48h post fertilization at 18 degree celsius)

planula P3 stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: planula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: planula P2 stage
definition: Competent to metamorphose as (72h post fertilization at 18 degree celsius)

aged planula stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: planula period
subclass of: Restriction
  on property: immediately preceded by
  some values from: planula P3 stage
definition: Aged planula (> 3 days post fertilization at 18 degree celsius) but not received metamporphosis signal.

metamorphosis period
type: Class
subclass of: life cycle stage
subclass of: Restriction
  on property: immediately preceded by
  some values from: planula period

settled planula stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: metamorphosis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: planula period
definition: torpedo shape planula that stopped swimming

blob stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: metamorphosis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: settled planula stage
definition: irregularly shaped metamorphosing planula attached to substrate, not yet flattened

disc stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: metamorphosis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: blob stage
definition: metamorphosing planula attached to the substrate and in shape of a flattened disc

sculpted disc stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: metamorphosis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: disc stage
definition: metamorphosing planula attached to the substrate and in shape of a flattened disc with sculpted indentations

primary polyp stalk extension stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: metamorphosis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: sculpted disc stage
definition: uniform extension emerging from the sculpted disc

primary polyp developing head stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: metamorphosis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: primary polyp stalk extension stage
definition: swollen distal extremity developing into a functional primary polyp head

functional primary polyp stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: metamorphosis period
subclass of: Restriction
  on property: immediately preceded by
  some values from: primary polyp developing head stage
definition: theca of the primary polyp open on the oral side and mouth open

colony phase
type: Class
subclass of: life cycle stage
subclass of: Restriction
  on property: immediately preceded by
  some values from: metamorphosis period
definition: colony containing mature or developing gonozoids , gastrozoids and stolons.

gastrozoid development
type: Class
subclass of: Restriction
  on property: part of
  some values from: colony phase

stalk extenstion stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: gastrozoid development
definition: uniform extension emerging from the stolon as first stage of gastrozoid development

developing head stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: gastrozoid development
subclass of: Restriction
  on property: immediately preceded by
  some values from: stalk extenstion stage
definition: swollen distal extremity developing into a complete gastrozoid head

functional gastrozoid stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: gastrozoid development
subclass of: Restriction
  on property: immediately preceded by
  some values from: developing head stage
definition: complete and functional gastrozoid with open hydrotheca and mouth

gonozoid development
type: Class
subclass of: Restriction
  on property: part of
  some values from: colony phase
definition: Non feeding polyp specialized in budding medusae

growing gonozoid stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: gonozoid development
definition: growing and developing gonozoid

budding gonozoid stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: gonozoid development
subclass of: Restriction
  on property: immediately preceded by
  some values from: growing gonozoid stage
definition: mature gonozoid budding medusae

non-budding gonozoid stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: gonozoid development
subclass of: Restriction
  on property: immediately preceded by
  some values from: growing gonozoid stage
definition: mature gonozoid not containing any medusa bud only central tube and disc-shaped cap

medusa phase
type: Class
subclass of: life cycle stage
subclass of: Restriction
  on property: immediately preceded by
  some values from: gonozoid development

medusa budding
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa phase
subclass of: Restriction
  on property: immediately preceded by
  some values from: gonozoid development

early medusa bud stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa budding
subclass of: Restriction
  on property: immediately preceded by
  some values from: budding gonozoid stage
definition: medusa bud with visible ectoderm, endoderm and entocodon

mid medusa bud stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa budding
subclass of: Restriction
  on property: immediately preceded by
  some values from: early medusa bud stage
definition: medusa bud with forming subumbrella cavity

late medusa bud stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa budding
subclass of: Restriction
  on property: immediately preceded by
  some values from: mid medusa bud stage
definition: medusa bud with with folding umbrella

medusa growth
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa phase
subclass of: Restriction
  on property: immediately preceded by
  some values from: medusa budding

4-bulb medusa stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa growth
subclass of: Restriction
  on property: immediately preceded by
  some values from: late medusa bud stage
definition: period of medusa growth between release medusa from gonozoid until appearance of secondary tentacles. Only 4 tentacle bulbs present
has exact synonym: baby medusa stage

8-bulb medusa stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa growth
subclass of: Restriction
  on property: immediately preceded by
  some values from: 4-bulb medusa stage
definition: period of medusa growth when only 8 tentacles are present

12-bulb medusa stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa growth
subclass of: Restriction
  on property: immediately preceded by
  some values from: 8-bulb medusa stage
definition: period of medusa growth when only 12 tentacles are present
has exact synonym: young medusa stage

16-bulb immature medusa stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa growth
subclass of: Restriction
  on property: immediately preceded by
  some values from: 12-bulb medusa stage
definition: period of medusa growth when only 16 tentacles are present. No mature gametes (eg 5mm diameter)

mature adult medusa stage
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa growth
subclass of: Restriction
  on property: immediately preceded by
  some values from: 16-bulb immature medusa stage
definition: period of medusa growth when only 16 tentacles are present. Gonads contain mature gametes. (eg 10mm diameter)

multicellular organism
type: Class

organism subdivision
type: Class
deprecated: true

mouth
type: Class
subclass of: anatomical structure

tentacle system
type: Class
subclass of: anatomical structure

tentacle
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: tentacle system

tissue layer
type: Class
subclass of: anatomical structure

ectoderm
type: Class
deprecated: true

gastrula outer layer
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: gastrula
subclass of: Restriction
  on property: develops from
  some values from: aboral pole of blastula
subclass of: Restriction
  on property: existence starts during
  some values from: very early gastrula stage
subclass of: Restriction
  on property: existence ends during
  some values from: late gastrula stage
definition: Outer layer of the gastrula.

oral gastrula outer layer
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: gastrula outer layer
subclass of: Restriction
  on property: develops from
  some values from: oral pole of blastula
subclass of: Restriction
  on property: existence starts during
  some values from: very early gastrula stage
subclass of: Restriction
  on property: existence ends during
  some values from: late gastrula stage
definition: Oral part of the outer layer of the gastrula.

aboral gastrula outer layer
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: gastrula outer layer
subclass of: Restriction
  on property: develops from
  some values from: aboral pole of blastula
subclass of: Restriction
  on property: existence starts during
  some values from: very early gastrula stage
subclass of: Restriction
  on property: existence ends during
  some values from: late gastrula stage
definition: Aboral part of the outer layer of the gastrula.

lateral gastrula outer layer
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: gastrula outer layer
subclass of: Restriction
  on property: develops from
  some values from: blastula
subclass of: Restriction
  on property: existence starts during
  some values from: very early gastrula stage
subclass of: Restriction
  on property: existence ends during
  some values from: late gastrula stage
definition: Mid part of the outer layer of the gastrula.

planula ectoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: planula larva
subclass of: Restriction
  on property: develops from
  some values from: gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Outer layer of the planula.
has exact synonym: planula outer layer

oral planula ectoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: planula ectoderm
subclass of: Restriction
  on property: develops from
  some values from: gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Oral part of the outer layer of the planula.

aboral planula ectoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: planula ectoderm
subclass of: Restriction
  on property: develops from
  some values from: gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Aboral part of the outer layer of the planula.

endoderm
type: Class
deprecated: true

gastrula ingressing cells
type: Class
subclass of: cell
subclass of: Restriction
  on property: part of
  some values from: gastrula
subclass of: Restriction
  on property: develops from
  some values from: oral pole of blastula
subclass of: Restriction
  on property: existence starts during
  some values from: very early gastrula stage
subclass of: Restriction
  on property: existence ends during
  some values from: late gastrula stage
definition: Cells ingressing from the outer layer of the gastrula into the blastocoel.

oral gastrula ingressing cells
type: Class
subclass of: cell
subclass of: Restriction
  on property: part of
  some values from: gastrula
subclass of: Restriction
  on property: develops from
  some values from: blastula
subclass of: Restriction
  on property: existence starts during
  some values from: mid gastrula stage
definition: Cells ingressing from the outer layer into the blastocoel on the oral side of the gastrula.

aboral gastrula ingressing cells
type: Class
subclass of: cell
subclass of: Restriction
  on property: part of
  some values from: gastrula
subclass of: Restriction
  on property: develops from
  some values from: blastula
subclass of: Restriction
  on property: existence starts during
  some values from: mid gastrula stage
definition: Cells ingressing from the outer layer into the blastocoel on the aboral side of the gastrula.

planula endoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: planula larva
subclass of: Restriction
  on property: develops from
  some values from: gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Inner layer of the planula.
has exact synonym: planula inner layer

aboral planula endoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: planula endoderm
subclass of: Restriction
  on property: develops from
  some values from: gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Inner layer of the planula on the aboral side of the planula.

oral planula endoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: planula endoderm
subclass of: Restriction
  on property: develops from
  some values from: gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Inner layer of the planula on the oral side of the planula.

fertilized egg
type: Class
subclass of: cell
subclass of: Restriction
  on property: develops from
  some values from: gamete
subclass of: Restriction
  on property: existence starts during
  some values from: one cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: one cell stage
definition: Cell formed by fusion of a mature female reproductive cell and a mature male reproductive cell at fertilization.
has exact synonym: zygote

embryo
type: Class
subclass of: multicellular organism
subclass of: Restriction
  on property: develops from
  some values from: fertilized egg
subclass of: Restriction
  on property: existence starts during
  some values from: one cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: late gastrula stage
definition: Anatomical entity that comprises the organism in the early stages of growth and differentiation that are characterized by cleavage, the laying down of fundamental tissues.

cleaving embryo
type: Class
subclass of: embryo
subclass of: Restriction
  on property: existence ends during
  some values from: 64-cell stage
definition: Organism at the cleavage stage.

2-cell embryo
type: Class
subclass of: cleaving embryo
subclass of: Restriction
  on property: existence starts during
  some values from: 2-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: 2-cell stage
definition: Organism at the cleavage stage after the first cell division.

4-cell embryo
type: Class
subclass of: cleaving embryo
subclass of: Restriction
  on property: develops from
  some values from: 2-cell embryo
subclass of: Restriction
  on property: existence starts during
  some values from: 4-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: 4-cell stage
definition: Organism at the cleavage stage after two division cycles.

8-cell embryo
type: Class
subclass of: cleaving embryo
subclass of: Restriction
  on property: develops from
  some values from: 4-cell embryo
subclass of: Restriction
  on property: existence starts during
  some values from: 8-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: 8-cell stage
definition: Organism at the cleavage stage after three division cycles.

16-cell embryo
type: Class
subclass of: cleaving embryo
subclass of: Restriction
  on property: develops from
  some values from: 8-cell embryo
subclass of: Restriction
  on property: existence starts during
  some values from: 16-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: 16-cell stage
definition: Organism at the cleavage stage after four division cycles.

32-cell embryo
type: Class
subclass of: cleaving embryo
subclass of: Restriction
  on property: develops from
  some values from: 16-cell embryo
subclass of: Restriction
  on property: existence starts during
  some values from: 32-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: 32-cell stage
definition: Organism at the cleavage stage after five division cycles.

64-cell embryo
type: Class
subclass of: cleaving embryo
subclass of: Restriction
  on property: develops from
  some values from: 32-cell embryo
subclass of: Restriction
  on property: existence starts during
  some values from: 64-cell stage
definition: Organism at the cleavage stage after six division cycles.

blastula
type: Class
subclass of: embryo
subclass of: Restriction
  on property: develops from
  some values from: 64-cell embryo
subclass of: Restriction
  on property: existence starts during
  some values from: early blastula stage
subclass of: Restriction
  on property: existence ends during
  some values from: late blastula stage
definition: Organism at the blastula stage - an early stage of embryonic development in animals. It is produced by cleavage of a fertilized ovum and consists of a spherical layer of around 128 cells surrounding a central fluid-filled cavity called the blastocoel.

early blastula
type: Class
subclass of: blastula
subclass of: Restriction
  on property: existence ends during
  some values from: early blastula stage
definition: Blastula stage embryo before epithelisation.

mid blastula
type: Class
subclass of: blastula
subclass of: Restriction
  on property: develops from
  some values from: early blastula
subclass of: Restriction
  on property: existence starts during
  some values from: mid blastula stage
subclass of: Restriction
  on property: existence ends during
  some values from: mid blastula stage
definition: Blastula stage embryo with polarised epithelial cells.

late blasutla
type: Class
subclass of: blastula
subclass of: Restriction
  on property: develops from
  some values from: mid blastula
subclass of: Restriction
  on property: existence starts during
  some values from: late blastula stage
definition: Blastula stage embryo with polarised and columnar epithelial cells.

gastrula
type: Class
subclass of: embryo
subclass of: Restriction
  on property: develops from
  some values from: late blasutla
subclass of: Restriction
  on property: existence starts during
  some values from: very early gastrula stage
definition: Organism at the gastrula stage.

very early gastrula
type: Class
subclass of: gastrula
subclass of: Restriction
  on property: existence ends during
  some values from: very early gastrula stage
definition: Visible pointed oral pole but no cell ingression, Ciliogenesis starting.

early gastrula
type: Class
subclass of: gastrula
subclass of: Restriction
  on property: develops from
  some values from: very early gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: early gastrula stage
subclass of: Restriction
  on property: existence ends during
  some values from: early gastrula stage
definition: Gastrula with a few cells ingressed at pointed oral pole. Swimming.

mid gastrula
type: Class
subclass of: gastrula
subclass of: Restriction
  on property: develops from
  some values from: early gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: mid gastrula stage
subclass of: Restriction
  on property: existence ends during
  some values from: mid gastrula stage
definition: Gastrula in which blastotocoel is half filled with ingressing cells.

late gastrula
type: Class
subclass of: gastrula
subclass of: Restriction
  on property: develops from
  some values from: mid gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: late gastrula stage
definition: Gastrula in which Blastocoel is full but no epithelisation of internal cells.

planula larva
type: Class
subclass of: multicellular organism
subclass of: Restriction
  on property: develops from
  some values from: late gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
subclass of: Restriction
  on property: existence ends during
  some values from: settled planula stage
definition: A distinct juvenile form before metamorphosis with elongated shape and cilliated outer layer. Inner and outer tissue layers separated by basement membrane.

planula P1
type: Class
subclass of: planula larva
subclass of: Restriction
  on property: existence ends during
  some values from: planula P1 stage
definition: Planula larva showing epithelisation of gastrodermal cells at aboral pole but not orally.

planula P2
type: Class
subclass of: planula larva
subclass of: Restriction
  on property: develops from
  some values from: planula P1
subclass of: Restriction
  on property: existence starts during
  some values from: planula P2 stage
subclass of: Restriction
  on property: existence ends during
  some values from: planula P2 stage
definition: Planula larva with visible central cavity in gastrodermis, incompetent to metamorphose.

planula P3
type: Class
subclass of: planula larva
subclass of: Restriction
  on property: develops from
  some values from: planula P2
subclass of: Restriction
  on property: existence starts during
  some values from: planula P3 stage
subclass of: Restriction
  on property: existence ends during
  some values from: planula P3 stage
definition: Planula larva with all cell types diffrerntiated and competent to metamorphose.

aged planula
type: Class
subclass of: planula larva
subclass of: Restriction
  on property: develops from
  some values from: planula P3
subclass of: Restriction
  on property: existence starts during
  some values from: aged planula stage
subclass of: Restriction
  on property: existence ends during
  some values from: aged planula stage
definition: Elongated planula competent to metamorphose, thinner than P3 planula.

metamorphosing planula
type: Class
subclass of: multicellular organism
subclass of: Restriction
  on property: develops from
  some values from: planula larva
subclass of: Restriction
  on property: existence starts during
  some values from: settled planula stage
subclass of: Restriction
  on property: existence ends during
  some values from: sculpted disc stage
definition: Planula larva that has stopped swimming and is transforming into a polyp.

settled planula
type: Class
subclass of: metamorphosing planula
subclass of: Restriction
  on property: existence ends during
  some values from: settled planula stage
definition: Planula larva that has stopped swimming and fixed to substrate.

blob
type: Class
subclass of: metamorphosing planula
subclass of: Restriction
  on property: develops from
  some values from: settled planula
subclass of: Restriction
  on property: existence starts during
  some values from: blob stage
subclass of: Restriction
  on property: existence ends during
  some values from: blob stage
definition: Metamorphosing larva that has a pear shape.

disc
type: Class
subclass of: metamorphosing planula
subclass of: Restriction
  on property: develops from
  some values from: blob
subclass of: Restriction
  on property: existence starts during
  some values from: disc stage
subclass of: Restriction
  on property: existence ends during
  some values from: disc stage
definition: Transitory form of planula undergoing metamorphosis a flattened circular form attached to the substrate.

sculpted disc
type: Class
subclass of: metamorphosing planula
subclass of: Restriction
  on property: develops from
  some values from: disc
subclass of: Restriction
  on property: existence starts during
  some values from: sculpted disc stage
definition: Transitory form of planula undergoing metamorphosis a flattened form attached to the substrate showing irregular indentations and with small stalk emerging.

spindle-associated
type: Class
subclass of: cellular component
subclass of: Restriction
  on property: existence starts during
  some values from: 2-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: 64-cell stage
definition: Region of the cell closely surrounding the mitotoc spindle.

animal cortex
type: Class
subclass of: cell cortex
subclass of: Restriction
  on property: part of
  some values from: cellular component
subclass of: Restriction
  on property: existence starts during
  some values from: stage III oocyte growth stage
subclass of: Restriction
  on property: existence ends during
  some values from: cleavage period
definition: Region inheriting the peripheral region of the egg around the animal pole.

animal cortex of oocyte
type: Class
subclass of: animal cortex
subclass of: Restriction
  on property: part of
  some values from: oocyte

animal cortex of egg cell
type: Class
subclass of: animal cortex
subclass of: Restriction
  on property: part of
  some values from: egg cell
subclass of: Restriction
  on property: develops from
  some values from: animal cortex of oocyte

vegetal cortex
type: Class
subclass of: cell cortex
subclass of: Restriction
  on property: part of
  some values from: cellular component
subclass of: Restriction
  on property: existence ends during
  some values from: cleavage period
definition: Region inheriting the peripheral region of the egg around the vegetal pole.

vegetal cortex of oocyte
type: Class
subclass of: vegetal cortex
subclass of: Restriction
  on property: part of
  some values from: oocyte
subclass of: Restriction
  on property: existence starts during
  some values from: stage III oocyte growth stage
subclass of: Restriction
  on property: existence ends during
  some values from: stage III oocyte growth stage
definition: Region of a stage III oocyte cortex close to the oocyte nucleus.

vegetal cortex of egg
type: Class
subclass of: vegetal cortex
subclass of: Restriction
  on property: part of
  some values from: egg cell
subclass of: Restriction
  on property: develops from
  some values from: vegetal cortex of oocyte
definition: Egg cortex region containing the site of polar body formation.

cytoplasm
type: Class
subclass of: cellular component
subclass of: Restriction
  on property: part of
  some values from: cellular component

animal cytoplasm
type: Class
subclass of: cytoplasm

animal cytoplasm of oocyte
type: Class
subclass of: animal cytoplasm
subclass of: Restriction
  on property: part of
  some values from: oocyte
subclass of: Restriction
  on property: existence starts during
  some values from: stage III oocyte growth stage
subclass of: Restriction
  on property: existence ends during
  some values from: stage III oocyte growth stage
definition: Region of cytoplasm in a stage III oocyte in the same hemishere as the nucleus.

animal cytoplasm of egg
type: Class
subclass of: animal cytoplasm
subclass of: Restriction
  on property: part of
  some values from: egg cell
subclass of: Restriction
  on property: develops from
  some values from: animal cytoplasm of oocyte
definition: Cytoplasm in egg hemisphere containing site of polar body formation.

vegetal cytoplasm
type: Class
subclass of: cytoplasm

vegetal cytoplasm of oocyte
type: Class
subclass of: vegetal cytoplasm
subclass of: Restriction
  on property: part of
  some values from: oocyte
subclass of: Restriction
  on property: existence starts during
  some values from: stage III oocyte growth stage
subclass of: Restriction
  on property: existence ends during
  some values from: stage III oocyte growth stage

vegetal cytoplasm of egg
type: Class
subclass of: vegetal cytoplasm
subclass of: Restriction
  on property: part of
  some values from: egg cell
subclass of: Restriction
  on property: develops from
  some values from: vegetal cytoplasm of oocyte

oral territory
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: existence starts during
  some values from: 2-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: late gastrula stage

oral pole of embryo
type: Class
subclass of: oral territory
subclass of: Restriction
  on property: part of
  some values from: embryo

oral pole of planula larva
type: Class
subclass of: oral territory
subclass of: Restriction
  on property: part of
  some values from: planula larva
subclass of: Restriction
  on property: develops from
  some values from: oral pole of embryo
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
subclass of: Restriction
  on property: existence ends during
  some values from: settled planula stage

oral pole blastomeres
type: Class
subclass of: oral territory
subclass of: Restriction
  on property: part of
  some values from: cleaving embryo
subclass of: Restriction
  on property: existence starts during
  some values from: 8-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: 64-cell stage

oral pole of blastula
type: Class
subclass of: oral territory
subclass of: Restriction
  on property: part of
  some values from: blastula
subclass of: Restriction
  on property: develops from
  some values from: oral pole blastomeres

oral pole of gastrula
type: Class
subclass of: oral territory
subclass of: Restriction
  on property: part of
  some values from: gastrula

aboral territory
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: existence starts during
  some values from: 2-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: late gastrula stage

aboral pole of embryo
type: Class
subclass of: aboral territory
subclass of: Restriction
  on property: part of
  some values from: embryo

aboral pole of planula larva
type: Class
subclass of: aboral territory
subclass of: Restriction
  on property: part of
  some values from: planula larva
subclass of: Restriction
  on property: develops from
  some values from: aboral pole of embryo
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
subclass of: Restriction
  on property: existence ends during
  some values from: settled planula stage

aboral pole blastomeres
type: Class
subclass of: aboral territory
subclass of: Restriction
  on property: part of
  some values from: cleaving embryo
subclass of: Restriction
  on property: existence starts during
  some values from: 8-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: 64-cell stage

aboral pole of blastula
type: Class
subclass of: aboral territory
subclass of: Restriction
  on property: part of
  some values from: blastula
subclass of: Restriction
  on property: develops from
  some values from: aboral pole blastomeres

aboral pole of gastrula
type: Class
subclass of: aboral territory
subclass of: Restriction
  on property: part of
  some values from: gastrula

blastomere
type: Class
subclass of: cell
subclass of: Restriction
  on property: part of
  some values from: cleaving embryo
subclass of: Restriction
  on property: existence starts during
  some values from: 2-cell stage
subclass of: Restriction
  on property: existence ends during
  some values from: 64-cell stage
definition: Single cell of a cleavage cel embryo.

germ cell
type: Class
subclass of: cell
subclass of: Restriction
  on property: part of
  some values from: gonad
subclass of: Restriction
  on property: develops from
  some values from: medusa
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage

male germ cell
type: Class
subclass of: germ cell

spermatogonium
type: Class
subclass of: male germ cell
subclass of: Restriction
  on property: develops from
  some values from: interstitial cell
definition: An undeveloped male germ cell. Spermatogonia develop into primary spermatocytes.

spermatid
type: Class
subclass of: male germ cell
subclass of: Restriction
  on property: develops from
  some values from: spermatogonium
subclass of: Restriction
  on property: existence starts during
  some values from: 8-bulb medusa stage
definition: A male germ cell that develops from the haploid secondary spermatocytes. Without further division, spermatids undergo structural changes and give rise to spermatozoa.

spermatozoid
type: Class
subclass of: male germ cell
subclass of: Restriction
  on property: develops from
  some values from: spermatid
subclass of: Restriction
  on property: existence starts during
  some values from: 12-bulb medusa stage
definition: A mature male germ cell that develops from a spermatid.
has exact synonym: sperm

female germ cell
type: Class
subclass of: germ cell

oogonium
type: Class
subclass of: female germ cell
definition: An undifferentiated germ cell that proliferates rapidly and gives rise to oocytes.

oocyte
type: Class
subclass of: female germ cell
subclass of: Restriction
  on property: develops from
  some values from: oogonium
definition: A female germ cell that has entered meiosis.

growing oocyte
type: Class
subclass of: oocyte
subclass of: Restriction
  on property: existence starts during
  some values from: 8-bulb medusa stage
definition: Oocyte incorporating yolk.

fully grown oocyte
type: Class
subclass of: oocyte
subclass of: Restriction
  on property: develops from
  some values from: growing oocyte
subclass of: Restriction
  on property: existence starts during
  some values from: stage I oocyte growth stage
subclass of: Restriction
  on property: existence ends during
  some values from: stage III oocyte growth stage
definition: Oocyte greater than 150 micrometers in diameter competent to undergo meiotic maturation.

gamete
type: Class
subclass of: cell
definition: A mature sexual reproductive cell having a single set of unpaired chromosomes.

egg cell
type: Class
subclass of: gamete
subclass of: Restriction
  on property: develops from
  some values from: fully grown oocyte
definition: A female gamete where meiosis is complete and is able to participate in fertilization.
has exact synonym: female gamete

blastocoel roof cell
type: Class
subclass of: cell
subclass of: Restriction
  on property: part of
  some values from: gastrula
subclass of: Restriction
  on property: develops from
  some values from: blastula
subclass of: Restriction
  on property: existence starts during
  some values from: very early gastrula stage

gland cell
type: Class
subclass of: cell
definition: Specialized cell participating in mucus secretion.

planula aboral gland cell
type: Class
subclass of: gland cell
subclass of: Restriction
  on property: part of
  some values from: planula larva
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Gland cell located on the aboral side of the planula larva, in the outer layer.

planula gland cell
type: Class
subclass of: gland cell
subclass of: Restriction
  on property: part of
  some values from: planula larva
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Gland cell located in the inner layer of the planula larva.

manubrium gland cell
type: Class
subclass of: gland cell
subclass of: Restriction
  on property: part of
  some values from: manubrium
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Gland cell of the manubrium.

gastrozoid gland cell
type: Class
subclass of: gland cell
subclass of: Restriction
  on property: part of
  some values from: gastrozoid
definition: Gland cell of the gastrozoid.

interstitial cell
type: Class
subclass of: cell
definition: Multipotent stem cell.

stolon interstitial cell
type: Class
subclass of: interstitial cell
subclass of: Restriction
  on property: part of
  some values from: stolon
subclass of: Restriction
  on property: develops from
  some values from: planula larva
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Interstitial cell in the stolon.

embryo interstitial cell
type: Class
subclass of: interstitial cell
subclass of: Restriction
  on property: part of
  some values from: embryo
definition: Interstitial cell in the embryo.

planula interstitial cell
type: Class
subclass of: interstitial cell
subclass of: Restriction
  on property: part of
  some values from: planula larva
definition: Interstitial cell in the planula.

gastrozoid interstitial cell
type: Class
subclass of: interstitial cell
subclass of: Restriction
  on property: part of
  some values from: gastrozoid
definition: Interstitial cell in the feeding polyp.

gonozoid interstitial cell
type: Class
subclass of: interstitial cell
subclass of: Restriction
  on property: part of
  some values from: gonozoid
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Interstitial cell within the gonozoid.

manubrium interstital cell
type: Class
subclass of: interstitial cell
subclass of: Restriction
  on property: part of
  some values from: manubrium
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Interstital cell of the manubrium.

nematoblast
type: Class
subclass of: cell
definition: Differenciating nematocyte.

stolon nematoblast
type: Class
subclass of: nematoblast
subclass of: Restriction
  on property: part of
  some values from: stolon
subclass of: Restriction
  on property: develops from
  some values from: planula larva
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Nematoblast in the stolon.

planula nematoblast
type: Class
subclass of: nematoblast
subclass of: Restriction
  on property: part of
  some values from: planula larva
definition: Nematoblast in the planula.

tentacle bulb nemtoblast
type: Class
subclass of: nematoblast
subclass of: Restriction
  on property: part of
  some values from: nematogenic ectoderm of the bulb
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nematoblast of the tentacle bulb.

manubrium nematoblast
type: Class
subclass of: nematoblast
subclass of: Restriction
  on property: part of
  some values from: manubrium
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nematoblast of the manubrium.

nematocyte
type: Class
subclass of: cell
definition: Specialized cell containing one giant explosive secretory organelle called nematocyst used for prey capture and defense from predators.

planula nematocyte
type: Class
subclass of: nematocyte
subclass of: Restriction
  on property: part of
  some values from: planula larva
definition: Nematocyte of the planula.

medusa tentacle nematocyte
type: Class
subclass of: nematocyte
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nematocyte of the medusa tentacle.

manubrium nematocyte
type: Class
subclass of: nematocyte
subclass of: Restriction
  on property: part of
  some values from: manubrium
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nematocyte located on the manubrium.

gastrozoid tentacle nematocyte
type: Class
subclass of: nematocyte
subclass of: Restriction
  on property: part of
  some values from: gastrozoid tentacle
definition: Nematocyte located on the tentacle.

neural cell
type: Class
subclass of: cell
definition: A cell that is part of the nervous system.

planula neural cell
type: Class
subclass of: neural cell
subclass of: Restriction
  on property: part of
  some values from: planula larva
definition: Neural cell in the planula.

planula lateral neural cells
type: Class
subclass of: planula neural cell
subclass of: Restriction
  on property: develops from
  some values from: gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Neural cell in the mid part of the planula.

plaunula aboral ectoderm neural cells
type: Class
subclass of: planula neural cell
subclass of: Restriction
  on property: develops from
  some values from: gastrula
subclass of: Restriction
  on property: existence starts during
  some values from: planula P1 stage
definition: Neural cell in the aboral part of the planula.

nerve cell of the radial canal
type: Class
subclass of: neural cell
subclass of: Restriction
  on property: part of
  some values from: radial canal
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nerve cells of the radial canal.

nerve cell of the circular canal
type: Class
subclass of: neural cell
subclass of: Restriction
  on property: part of
  some values from: circular canal
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nerve cells of the circular canal.

nerve cells of the gonad ectoderm
type: Class
subclass of: neural cell
subclass of: Restriction
  on property: part of
  some values from: gonad
subclass of: Restriction
  on property: develops from
  some values from: medusa
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nerve cells located in the gonad outer layer.

nerve cell of the tentacle bulb
type: Class
subclass of: neural cell
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle bulb
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nerve cell of the medusa tentacle bulb.

subumbrella nervous cell
type: Class
subclass of: neural cell
subclass of: Restriction
  on property: part of
  some values from: subumbrella
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nervous cells of the subumbrella.

smooth muscle cell
type: Class
subclass of: cell
definition: Epithelial cell containing smooth myofibers.

smooth muscle of the velum
type: Class
subclass of: smooth muscle cell
subclass of: Restriction
  on property: part of
  some values from: velum
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Smooth muscle of the velum.

subumbrella smooth muscle
type: Class
subclass of: smooth muscle cell
subclass of: Restriction
  on property: part of
  some values from: subumbrella
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Smooth muscle of the subumbrella.

striated muscle cell
type: Class
subclass of: cell
definition: Epithelial cell containing striated myofibers.

striated muscle of the velum
type: Class
subclass of: striated muscle cell
subclass of: Restriction
  on property: part of
  some values from: velum
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Striated muscle of the velum.

subumbrella striated muscle
type: Class
subclass of: striated muscle cell
subclass of: Restriction
  on property: part of
  some values from: subumbrella
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Striated muscle of the subumbrella.

polyp colony
type: Class
subclass of: multicellular organism
subclass of: Restriction
  on property: develops from
  some values from: planula larva
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Connected system of gastrozoid and gonozoid polyps, propagating vegetatively.

stolon
type: Class
subclass of: Restriction
  on property: part of
  some values from: polyp colony
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Tubular structure adhering to the substrate, connecting the bases of the polyps.

stolon growth tip
type: Class
subclass of: Restriction
  on property: part of
  some values from: stolon
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Growing tip of a stolon.

stolon mesoglea
type: Class
subclass of: mesoglea
subclass of: Restriction
  on property: part of
  some values from: stolon
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Mesoglea layer between the inner and outer layers of the stolon.

stolon body
type: Class
subclass of: Restriction
  on property: part of
  some values from: stolon
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Segments of the stolon between the bases of the polyps, excluding the growing tip.

stolon ectoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: stolon
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Outer layer within the stolon.

stolon endoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: stolon
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Inner layer within the stolon.

gonozoid
type: Class
subclass of: Restriction
  on property: part of
  some values from: polyp colony
subclass of: Restriction
  on property: develops from
  some values from: stolon
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Polyp specialised for production of medusa by budding.

gonozoid cap
type: Class
subclass of: Restriction
  on property: part of
  some values from: gonozoid
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Structure that closes the distal end of the gonozoid.

gonozoid central tube
type: Class
subclass of: Restriction
  on property: part of
  some values from: gonozoid
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Tubular structure comprising inner and outer layers at the centre of the gonozoid.

gonozoid ectoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: gonozoid
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Outer layer of the gonozoid including central tube and developing buds.

gonozoid endoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: gonozoid
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Inner layer of the gonozoid including central tube and developing buds.

epithelium covering buds
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: gonozoid
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Epithelial cell layer positioned between the developing medusa buds and the theca of the gonozoid.

medusa bud
type: Class
subclass of: Restriction
  on property: part of
  some values from: gonozoid
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Outgrowth of the gonozoid central tube, within which medusa structures develop.

early medusa bud
type: Class
subclass of: medusa bud
definition: Outgrowth of the gonozoid central tube, comprising entocodon, endoderm and ectoderm tissue layers.

mid medusa bud
type: Class
subclass of: medusa bud
definition: Bud on the side of the gonozoid central tube, in which all medusa structures are present but not yet expanded to final proportions.

late medusa bud
type: Class
subclass of: medusa bud
definition: Bud on the side of the gonozoid central tube, containing medusa structures with same proportions as newly released medusa.

entocodon
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: medusa bud
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Group of cells between the inner and outer layers of the early medusa bud.

developing manubrium
type: Class
subclass of: manubrium
subclass of: Restriction
  on property: part of
  some values from: medusa bud
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Developing manubrium within the medusa bud.

developing tentacle bulbs
type: Class
subclass of: medusa tentacle system
subclass of: Restriction
  on property: part of
  some values from: medusa bud
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Developing tentacle bud within the medusa bud.

developing radial canal
type: Class
subclass of: radial canal
subclass of: Restriction
  on property: part of
  some values from: medusa bud
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Developing radial canal within the medusa bud.

developing striated muscle
type: Class
subclass of: striated muscle cell
subclass of: Restriction
  on property: part of
  some values from: medusa bud
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Developing striated muscle within the medusa bud.

developing circular canal
type: Class
subclass of: circular canal
subclass of: Restriction
  on property: part of
  some values from: medusa bud
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Developing circular canal within the medusa bud.

gastrozoid
type: Class
subclass of: Restriction
  on property: part of
  some values from: polyp colony
subclass of: Restriction
  on property: develops from
  some values from: stolon
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Polyp specialised for catching prey and digesting.
has exact synonym: hydranth

gastrozoid tentacle
type: Class
subclass of: tentacle
subclass of: Restriction
  on property: part of
  some values from: gastrozoid
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Tentacle surrounding the gastrozoid mouth.

gastrozoid mouth
type: Class
subclass of: mouth
subclass of: Restriction
  on property: part of
  some values from: gastrozoid
definition: Mouth of the gastrozoid.

matrix
type: Class
subclass of: anatomical structure

theca
type: Class
subclass of: matrix
subclass of: Restriction
  on property: part of
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Chitinous acellular layer surronding and protecting the polyps.

gonotheca
type: Class
subclass of: theca
subclass of: Restriction
  on property: part of
  some values from: gonozoid
definition: Chitinous acellular layer surronding the gonozoid.

stolon perisarc
type: Class
subclass of: theca
subclass of: Restriction
  on property: part of
  some values from: stolon
definition: Chitinous acellular layer surronding the stolon.

hydrotheca
type: Class
subclass of: theca
subclass of: Restriction
  on property: part of
  some values from: gastrozoid
definition: Chitinous acellular layer surronding the gastrozoid.

mesoglea
type: Class
subclass of: matrix
definition: Jelly-like layer between epithelial layer. The mesoglea is mostly acellular and composed of extracellular matrix.

gonozoid mesoglea
type: Class
subclass of: mesoglea
subclass of: Restriction
  on property: part of
  some values from: gonozoid
subclass of: Restriction
  on property: develops from
  some values from: polyp colony
subclass of: Restriction
  on property: existence starts during
  some values from: colony phase
subclass of: Restriction
  on property: existence ends during
  some values from: medusa phase
definition: Mesoglea layer between the inner and outer tissue layers of the gonozoid central tube.

medusa
type: Class
subclass of: multicellular organism
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Swimming pelagic stage of the Clytia hemisphaerica life cycle.

umbrella
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: medusa
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Dome-shaped part of the medusa stage.

exumbrella
type: Class
subclass of: Restriction
  on property: part of
  some values from: umbrella
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Outer layer of the umbrella.

subumbrella
type: Class
subclass of: Restriction
  on property: part of
  some values from: umbrella
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Inner layers of the umbrella.

subumbrella endodermal plate
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: subumbrella
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Inner layer of the subumbrella in direct contact with the thick mesoglea layer of the medusa.

thick mesoglea layer of the umbrella
type: Class
subclass of: mesoglea
subclass of: Restriction
  on property: part of
  some values from: medusa
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Thick mesoglea layer of the umbrella forming the bulk of the umbrella.

bell margin
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: umbrella
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Outer border of the umbrella.

statocyst
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: bell margin
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Sensory structure of the medusa, located on the bell margin, consisting of a sensory vesicle containing statoliths.

medusa tentacle system
type: Class
subclass of: tentacle system
subclass of: Restriction
  on property: part of
  some values from: bell margin
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Medusa tentacle system comprising tentacles, tentacle bulbs and tentacle buds.

medusa tentacle bud
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle system
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Initial stage of tentacle bulb formation.

medusa tentacle bulb
type: Class
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle system
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Swollen structure producing the tentacle and connecting the bell margin to the tentacle.

nematogenic ectoderm of the bulb
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle bulb
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Cresent-shaped nematogenic area of the tentacle bulb, located on the oral side of the bulb outer layer.

non-nematogenic ectoderm of the bulb
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle bulb
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: V-shaped non-nematogenic ectodermal area of the tentacle bulb, located on the aboral side of the bulb.
has exact synonym: non-nematogenic epidermis of the bulb

tentacle bulb endoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle bulb
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Inner layer of the medusa tentacle bulb.
has exact synonym: tentacle bulb gastrodermis

medusa tentacle
type: Class
subclass of: tentacle
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle system
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Tentacle of the medusa not including the tentacle bulb.

primary medusa tentacle
type: Class
subclass of: medusa tentacle
definition: Four first medusa tentacles of the newly hatched medusa, connected to both radial and circular canals.

secondary medusa tentacle
type: Class
subclass of: medusa tentacle
subclass of: Restriction
  on property: develops from
  some values from: medusa
subclass of: Restriction
  on property: existence starts during
  some values from: 8-bulb medusa stage
definition: Medusa tentacle generated after medusa hatching and connected to the circular but not to the radial canal.

medusa tentacle ectoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Outer layer of the medusa tentacle.
has exact synonym: medusa tentacle epidermis

medusa tentacle endoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: medusa tentacle
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Inner layer of the medusa tentacle.

velum
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: bell margin
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: A muscular flap of tissue surrounding the margin of the bell.

inner layer of the velum
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: velum
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Inner layer of the velum.

outerlater of the velum
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: velum
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Outer layer of the velum.

radial canal
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: medusa
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Canal connecting the manubrium with the bell margin.

circular canal
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: bell margin
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Canal running along the bell margin.

nerve ring
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: bell margin
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Concentration of nerve cell bodies and projections running around the margin of the bell.

inner nerve ring
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: nerve ring
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nerve ring located closest to the centre of the medusa.

outer nerve ring
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: nerve ring
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Nerve ring located farest to the centre of the medusa.

manubrium
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: medusa
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Central structure of the medusa bearing the mouth and performing extracellular digestion.

medusa mouth
type: Class
subclass of: mouth
subclass of: Restriction
  on property: part of
  some values from: manubrium
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Medusa mouth as part of the manubrium.

manubrium roof
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: manubrium
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Inner layer of the manubrium opposite to the mouth and in direct contact with the thick mesoglea layer of the medusa.

manubrium ectoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: manubrium
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Outer layer of the manubrium.
has exact synonym: manubrium epidermis

manubrium endoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: manubrium
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Inner digestive layer of the manubrium.
has exact synonym: manubrium gastrodermis

gonad
type: Class
subclass of: anatomical structure
subclass of: Restriction
  on property: part of
  some values from: medusa
subclass of: Restriction
  on property: develops from
  some values from: medusa bud
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Reproductive organ of the medusa.

gonad ectoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: gonad
subclass of: Restriction
  on property: develops from
  some values from: medusa
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Outer layer of the gonad.
has exact synonym: gonad epidermis

gonad endoderm
type: Class
subclass of: tissue layer
subclass of: Restriction
  on property: part of
  some values from: gonad
subclass of: Restriction
  on property: develops from
  some values from: medusa
subclass of: Restriction
  on property: existence starts during
  some values from: 4-bulb medusa stage
definition: Inner layer of the gonad.
has exact synonym: gonad gastrodermis

cell
type: Class
definition: A material entity of anatomical origin (part of or deriving from an organism) that has as its parts a maximally connected cell compartment surrounded by a plasma membrane.

cellular component
type: Class
subclass of: Restriction
  on property: part of
  some values from: cell

cell cortex
type: Class
subclass of: cellular component

anatomical structure
type: Class

life cycle stage
type: Class