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

Type Article
Date 2021-06
Language English
Author(s) Monaco CristianORCID1, Sangare Nathanael1, 2, Le Moullac GillesORCID1, Basset Caline1, Belliard Corinne1, Mizuno Keiichi3, Smith Diane L., Lo-Yat Alain1
Affiliation(s) 1 : IFREMER, IRD, Institut Louis-Malardé, Univ Polynésie française, EIO, F-98719 Taravao, Tahiti, French Polynesia
2 : UMR 9220 ENTROPIE, Institut de Recherche Pour le Développement (IRD, Université de la Réunion, Université de la Nouvelle-Calédonie, Ifremer, CNRS), B.P.A5, 98848 Nouméa, New Caledonia
3 : IFREMER, IRD, Institut Louis-Malardé, Univ Polynésie française, EIO, F-98719 Taravao, Tahiti, French Polynesia
Source Marine Pollution Bulletin (0025-326X) (Elsevier BV), 2021-06 , Vol. 167 , P. 112329 (9p.)
DOI 10.1016/j.marpolbul.2021.112329
WOS© Times Cited 4
Keyword(s) Population collapse, Population recovery, Bivalve, Aquaculture, Tropical atoll, Energetics
Abstract

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

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Monaco Cristian, Sangare Nathanael, Le Moullac Gilles, Basset Caline, Belliard Corinne, Mizuno Keiichi, Smith Diane L., Lo-Yat Alain (2021). Dynamic Energy Budget model suggests feeding constraints and physiological stress in black-lip pearl oysters, 5 years post mass-mortality event. Marine Pollution Bulletin, 167, 112329 (9p.). Publisher's official version : https://doi.org/10.1016/j.marpolbul.2021.112329 , Open Access version : https://archimer.ifremer.fr/doc/00689/80154/