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Meeresplankton - Echinodermata (Stachelhäuter)   [Other Title]

Meeresplankton   [Series Title]
Marine Plankton   [Series Title]
Marine Plankton - Echinodermata   [Title Translation]
Rok: 2005
Žánr: Documentary Film
Exteriéry: n/a

Titulky:
Production company: IWF (Göttingen)
First released by: IWF (Göttingen)
Photography: Jürgen Kaeding, Ruth Barnich
Distributor: IWF (Göttingen)
Author: Hans-Uwe Dahms
  Dieter Fiege


Klíčová slova: bilateralsymmetrische, Dipleurula-Larve, Echinodermata, Echinoidea, heterotrophes, Holoplankton, Larven, Meeresplankton, Meroplankton, Metamorphose, Ophiuroidea, Schlangenstern, Seestern, Stachelhäuter, Zooplankton, bilaterally symmetrical, dipleurula larva, heterotrophic, holoplankton, larvae, marine plankton, meroplankton, metamorphosis, zooplankton
Heterotrophic zooplankton is commonly much more diverse than phytoplankton. Representatives of most animal phyla either belong to the plankton throughout their life or have certain developmental phases in the plankton - hence they are called holo- or meroplankton, respectively. Meroplanktonic larvae do not resemble their parents, but transform into the adult form by metamorphosis (indirect development). The pentaradiate and mostly benthic echinoderms develop very characteristic larvae that are bilaterally symmetrical and swim by the beat of cilia bands. A primary larva of all echinoderms is the dipleurula larva. Larvae of asteroids and ophiurans are characterized by long projections, that are stabilized by skeletal elements made of calcium carbonate. From the DVD: DAHMS, HANS-UWE (Hongkong); FIEGE, DIETER (Frankfurt a. M.). Marine Plankton. (C 12863)

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Minutáž: 1 min 8 sec

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