Pearl oysters Pinctada margaritifera grazing on natural plankton in Ahe atoll lagoon (Tuamotu archipelago, French Polynesia)

MARINE POLLUTION BULLETIN

卷:65

Article

Fournier, Jonathan¹  Dupuy, Christine^2,3  Bouvy, Marc⁴  Couraudon-Reale, Marine¹  Charpy, Loic^5,6  Pouvreau, Stephane⁷  Le Moullac, Gilles¹  Le Pennec, Marcel⁸  Cochard, Jean-Claude⁹ 

[1] IFREMER, Ctr Pacifique, BP 7004, F-98719 Taravao, Tahiti, France

[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 Mediterranee, UMR UPB, F-98713 Papeete, France

[6] IRD, CNRS, F-98713 Papeete, France

[7] IFREMER, RBE, LPI, UMR 100, Presquile Du Vivier 29840, Argenton, France

[8] Univ Polynesie Francaise, EA42639, F-98702 Faaa, Tahiti, France

[9] IFREMER, ODE, ER, F-29280 Plouzane, France

关键词: Pinctada margaritifera;    Clearance rates;    French Polynesia;    Phytoplankton;    Protists;   

DOI  :  10.1016/j.marpolbul.2012.03.026

来源: Elsevier

【 摘 要 】

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 Pinctada 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, and (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. (C) 2012 Elsevier Ltd. All rights reserved.

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