Pearl Oysters Pinctada margaritifera grazing on natural plankton in Ahe atoll lagoon (Tuamotu archipelago, French Polynesia)
|Author(s)||Fournier Jonathan1, Dupuy Celie2, 3, Bouvy Marc4, Couraudon-Reale Marine1, Charpy Loic5, 6, Pouvreau Stephane7, Le Moullac Gilles1, Le Pennec Marie-Annick8, Cochard Jean-Claude9|
|Affiliation(s)||1 : IFREMER, Ctr Pacifique, Taravao 98719, Tahiti, Fr Polynesia.
2 : Univ La Rochelle, LIENSs, UMR 6250, F-17000 La Rochelle, France.
3 : CNRS, F-17000 La Rochelle, France.
4 : Univ Montpellier 2, IRD, UMR 5119, ECOSYM, F-34095 Montpellier 5, France.
5 : Univ Aix Marseille 2, UMR UPB, Papeete 98713, Fr Polynesia.
6 : IRD, CNRS, Papeete 98713, Fr Polynesia.
7 : IFREMER, RBE, LPI, UMR 100, Presquile Du Vivier 29840, Argenton, France.
8 : Univ Polynesie Francaise, EA42639, Faaa 98702, Tahiti, Fr Polynesia.
9 : IFREMER, ODE, ER, F-29280 Plouzane, France.
|Source||Marine Pollution Bulletin (0025-326X) (Pergamon-elsevier Science Ltd), 2012 , Vol. 65 , N. 10-12 , P. 490-499|
|WOS© Times Cited||27|
|Keyword(s)||Pinctada margaritifera, Clearance rates, French Polynesia, Phytoplankton, Protists|
|Abstract||In atoll lagoons of French Polynesia, growth and reproduction of pearl oysters are mainly driven by plankton concentration. However, the actual diet of black-lip pearl oysters P. margaritifera in these lagoons is poorly known. To fill this gap, we used the flow through chamber method to measure clearance rates of P. margaritifera in Ahe atoll lagoon (Tuamotu Archipelago, French Polynesia). We found : (i) that pearl oysters cleared plankton at a rate that was positively related to plankton biovolume, (ii) that nanoflagellates were the main source of carbon for the pearl oysters, (iii) that the quantity and origin of carbon filtrated by pearl oysters was highly dependent on the concentration and composition of plankton. These results provide essential elements for the comprehension of growth and reproduction variability of pearl oysters in atoll lagoons of French Polynesia.|