Cifonauta

marine biology image database

11127 photos | 589 videos | 72 tags | 630 species | 89 places

1401 files founds

reference:

2010 Vellutini BC, Migotto AE. Embryonic, larval, and juvenile development of the sea biscuit Clypeaster subdepressus (Echinodermata: Clypeasteroida). PLoS ONE, 5(3): e9654, doi:10.1371/journal.pone.0009654, pmid:20339592, url:http://www.ncbi.nlm.nih.gov/pubmed/20339592

1401 files

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Embryo during blastula formation

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Juvenile sea biscuit

Aboral surface.

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Pluteus larva of a sea biscuit

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Pluteus larva of a sea biscuit

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Pluteus larva of a sea biscuit

Larva with a broken post-oral arm.

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Pluteus larva of a sea biscuit

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Sea biscuit metamorphosis

Regression of larval tissues. Spicules of the larval skeleton are still present in the aboral region.

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Ectodermic cells during blastula formation

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Pluteus larva of a sea biscuit

Larval epithelium during the growth of the antero-lateral arms (2nd pair).

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Pluteus larva of a sea biscuit

Stage with three pairs of arms.

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Pluteus larva of a sea biscuit

Epithelium.

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Blastula inside the fertilization membrane

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Pluteus larva of a sea biscuit

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Embryo during blastula formation

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Embryo with 1 cell

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Pluteus larva of a sea biscuit

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Pluteus larva of a sea biscuit

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Pluteus larva of a sea biscuit

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Juvenile sea biscuit

Anus in the aboral surface of the juvenile (red structure) and fecal pellets being released.

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Juvenile sea biscuit

Oral region with the lantern of Aristotle in formation.

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Pluteus larva of a sea biscuit

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Pluteus larva of a sea biscuit

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Embryos initiating the first cleavage

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Pluteus larva of a sea biscuit

Early eight-arm stage. Oral view showing digestive tract and vestibule invagination next to the left coelom.

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Juvenile sea biscuit

Lateral view.

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Pluteus larva of a sea biscuit

Early with two arms.

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Pluteus larva of a sea biscuit

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Juvenile sea biscuit after metamorphosis

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Pluteus larva of a sea biscuit

Stage with three pairs of arms.

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Juvenile sea biscuit

Lateral view. Detail of the lantern of Aristotle under the peristomial membrane (where mouth will open).

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Juvenile sea biscuit

Aboral region (normal position).

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Gastrula

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Pluteus larva of a sea biscuit

Epithelial cells with pigmented granules during growth of antero-lateral arms (2nd pair).

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Juvenile sea biscuit

Oral region with the lantern of Aristotle in formation.

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Pluteus larva of a sea biscuit

Anus in the beginning of the stage with four pairs of arms.

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Juvenile sea biscuit

Oral region with the lantern of Aristotle in formation.

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Before the first cleavage

Accelerated 25x.

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Pluteus larva of a sea biscuit

Larva with four pairs of arms.

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Pluteus larva of a sea biscuit

Early eight-arm stage, lateral view.

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Pluteus larva of a sea biscuit

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