Dynamic Energy Budget model suggests feeding constraints and physiological stress in black-lip pearl oysters, 5 years post mass-mortality event

MARINE POLLUTION BULLETIN

卷:167

Article

Monaco, Cristian J.¹  Sangare, Nathanael^1,2  Le Moullac, Gilles¹  Basset, Caline¹  Belliard, Corinne¹  Mizuno, Keiichi¹  Lo-Yat, Alain¹ 

[1] Univ Polynesie Francaise, Inst Louis Malard, IFREMER, IRD,EIO, F-98719 Tahiti, French Polynesi, France

[2] Univ Nouvelle Caledonie, Univ Reunion, Inst Rech Dev IRD, ENTROPIE,UMR 9220, BP A5, Noumea 98848, New Caledonia

关键词: Population collapse;    Population recovery;    Bivalve;    Aquaculture;    Tropical atoll;    Energetics;   

DOI  :  10.1016/j.marpolbul.2021.112329

来源: Elsevier

【 摘 要 】

Mass-mortality events of marine species can disturb the structure of communities. While identifying the causes of mass-mortality events is crucial for implementing recovery strategies, monitoring is challenging in remote locations. Black-lip pearl oysters (Pinctada margaritifera) are farmed for producing black pearls within remote atolls of French Polynesia. Previous mass-mortality events have resulted in the collapse of oysters and other species; however, the causes and conditions that favour recovery are unclear. We investigated the potential for oyster population recovery 5 years after a mortality event at Takaroa Atoll (Tuamotu Archipelago). Temperature, food availability (total chlorophyll-a), growth and reproduction were monitored. Growth was also simulated using a Dynamic Energy Budget model. Despite favourable conditions, reduced growth and reproduction signalled an energetic deficit. The model overpredicted growth, and supported the hypotheses that individuals are unable to profit from the phytoplankton available and maintenance costs are high in Takaroa, ultimately explaining their poor physiological condition.

【 授权许可】

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