Développement larvaire et flxation chez Thelepus setosus (Annélide Polychète) à Kerguelen, province subantarctique = Larval development and fixation on the substrate in Thelepus setosus (Polychaete worm) at Kerguelen Island (Subantarctic Province)
Duchêne, J.-C. (1983). Développement larvaire et flxation chez Thelepus setosus (Annélide Polychète) à Kerguelen, province subantarctique = Larval development and fixation on the substrate in Thelepus setosus (Polychaete worm) at Kerguelen Island (Subantarctic Province). Vie Milieu 33(2): 65-77
In: Vie et Milieu. Observatoire Oceanographique Banyuls: Banyuls-sur-Mer. ISSN 0240-8759, meer
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Biological development > Larval development
Settlement
Polychaeta [WoRMS]; Terebellidae Johnston, 1846 [WoRMS]; Thelepus setosus (Quatrefages, 1866) [WoRMS]
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| Abstract |
Thelepus setosus is a Terebellid polychaetous Annelid very abundant in the Golfe du Morbihan (Kerguelen archipelago, Subantarctic Province). This species is found on various substrates, builds different types of tubes according to the sediment and must be tolerant to this sediment. A description is given of larval development, from egg laying to juvenile stages. Then larval settling conditions on the substrate as a function of its granulometric structure are verified. On the other hand, in situ observations on the population, relating to peculiar aspects of colonization on a priori unfavourable sediment, are viewed together with developmental type and ethology. The reduced larval life and the cosmopolitan distribution lead to remarks about dispersal capacities of this species. |
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