Wecker P., Fournier A., Bosserelle P., Debitus Cécile, Lecellier G., Berteaux-Lecellier V. (2015). Dinoflagellate diversity among nudibranchs and sponges from French Polynesia : insights into associations and transfer. Comptes Rendus Biologies, 338 (4), p. 278-283. ISSN 1631-0691.
Titre du document
Dinoflagellate diversity among nudibranchs and sponges from French Polynesia : insights into associations and transfer
Wecker P., Fournier A., Bosserelle P., Debitus Cécile, Lecellier G., Berteaux-Lecellier V.
Source
Comptes Rendus Biologies, 2015,
338 (4), p. 278-283 ISSN 1631-0691
Symbioses with the dinoflagellate Symbiodinium are widespread among marine invertebrates and protists, especially in nutritionally demanding habitats, such as tropical coral reefs, where they play a major role in ecosystem survival. Moreover, apart from corals and sea anemones, many of the Symbiodinium species and clades involved in these partnerships remain to be characterized. This study provides new insights into nudibranch and sponge associations with Symbiodinium by sequencing regions of the Symbiodinium 28S rDNA and the host mitochondrial COI oxidase. Specimens were sampled between 2011 and 2013 from locations around the islands of Moorea and Tahiti, French Polynesia. Our results revealed that some of the sponges and nudibranchs harbored typical Symbiodinium from clade B or C while others harbored new, undescribed Symbiodiniurn-like dinoflagellates. A detailed analysis of the different life stages of the nudibranch Phestilla lugubris and of its specific coral prey, Porites rus, suggests a prey-predator horizontal transfer of the symbiont and its vertical inheritance from the parent to the eggs.
Plan de classement
Dynamique de populations / modélisation [036MILMAR01]
