Auricularia (echinoderms)

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The auricularia is a larval form of the echinoderms (Echinodermata), which occurs in the individual development ( ontogenesis ) of the sea ​​whale (Holothuroida). It is an initially bilaterally symmetrical shape that largely resembles the Dipleurula . However, the lash band is often more lobed. With the beginning of the metamorphosis , a doliolaria forms, in which the lash band breaks up into three to five individual bands. The conclusion of the metamorphosis is the pentactula stage with five tentacles and a pair of feet from which the finished sea roller develops.

literature

  • A. Goldschmid: Echinodermata, echinoderms. In: W. Westheide, R. Rieger: Special Zoology. Part 1. Protozoa and invertebrates. Spectrum, Heidelberg 2003, ISBN 3-8274-0998-5