WRINKLED BLASTULA OF THE SEA-STAR, ASTERINA MINOR HAYASHI*
- 31 December 1975
- journal article
- research article
- Published by Wiley in Development, Growth & Differentiation
- Vol. 18 (4) , 435-438
- https://doi.org/10.1111/j.1440-169x.1976.00435.x
Abstract
In naturally raised embryos of A. minor, changes of internal structure during the wrinkled blastula stage were followed. Blastomeres on the surface of the coeloblastula drop into the blastocoel 8 h after spawning, and eventually form multiple invaginations of the blastodermal layer. The blastocoel appears filled by the developed invaginations 4 1/2 h after the commencement of wrinkling. The invaginations then decrease in number and complexity, and after 11.5 h the wrinkled blastula stage ends, although gastrulation takes place before complete disappearance of the wrinkle-invaginations.This publication has 3 references indexed in Scilit:
- The Embryology of a Brooding Starfish, Leptasterias hexactis (Stimpson)Acta Zoologica, 1968
- I. The Development of the Starfish Solaster endeca ForbesThe Transactions of the Zoological Society of London, 1912
- XIX.—The Early Development of Cribrella oculata (Forbes), with Remarks on Echinoderm DevelopmentTransactions of the Royal Society of Edinburgh, 1905