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Marine Plankton - Sipincula   [Title Translation]

Meeresplankton   [Series Title]
Meeresplankton - Sipuncula (Spritzwürmer)   [Other Title]
Marine Plankton   [Series Title]
Έτος παραγωγής: 2005
Είδος: Documentary Film
Τόπος: n/a

Συντελεστές:
Production company: IWF (Göttingen)
First released by: IWF (Göttingen)
Photography: Ulrich Hoeger, Ruth Barnich
Distributor: IWF (Göttingen)
Author: Dieter Fiege


Λέξη - κλειδί: heterotrophes, Holoplankton, indirekten, Körper, Larve, Meeresplankton, Meroplankton, Metamorphose, Ontogenese, Pelagosphaera, Sekundärlarve, Sipincula, Spritzwürmer, Trochophora-Larve, Zooplankton, body, heterotrophic, holoplankton, indirect, larva, marine plankton, meroplankton, metamorphosis, ontogeny, pelagosphaera, secondary larva, trochophore larva, zooplankton

    Περιεχόμενο:
  • eng
  • deu
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). During the indirect ontogeny of sipunculans a secondary larva, the pelagosphaera, succeeds a trochophore larva. Its body consists of a frontal cephalic region, a middle region with a ciliary band and the trunk. The head and the middle region can be retracted into the trunk. From the DVD: DAHMS, HANS-UWE (Hongkong); FIEGE, DIETER (Frankfurt a. M.). Marine Plankton. (C 12863)

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Διάρκεια: 30 sec

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