Asterias rubens, dipleurula Helgoland 2015

Video in TIB AV-Portal: Asterias rubens, dipleurula Helgoland 2015

Formal Metadata

Title
Asterias rubens, dipleurula Helgoland 2015
Title of Series
Author
License
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
Identifiers
Publisher
Release Date
2021
Language
Silent film
Producer
Larink, Otto
Production Year
2015
Production Place
Helgoland

Content Metadata

Subject Area
Abstract
Asterias rubens (Echinodermata, Asteroida, Forcipulatida, Asteridae), dipleurula larva, hight 360 µm, Helgoland 04.2015. 1:26 min. Asteroida pass dipleurula, bipinnaria and brachiolaria stages before they change their whole construction during metamorphosis. Before the dipleurula is formed gastrulation takes place. In this coelogastrula an invagination of the vegetative pole forms the gut which develops a pair of coelomic cavities from which pairs of axo-, hydro, and somatocoels differentiate. The bipinnaria develops continuously from the dipleurula and the appearance of gut and coelomic structures can be observed in the complete transparent larvae. Video can be used for teaching.
Keywords Echinodermata Asteroida Forcipulatida Asteridae Asterias rubens dipleurula larva Helgoland 2015
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