FN Archimer Export Format PT J TI Biofouling development and its effect on growth and reproduction of the farmed pearl oyster Pinctada margaritifera BT AF LACOSTE, Elise LE MOULLAC, Gilles LEVY, Peva GUEGUEN, Yannick GAERTNER-MAZOUNI, Nabila AS 1:1;2:2;3:2;4:2;5:1; FF 1:;2:PDG-RBE-RMPF;3:PDG-RBE-RMPF;4:PDG-RBE-BOME-LALR;5:; C1 Univ Polynesie Francaise, Ecosyst Insulaires Oceaniens, UMR 241, Faaa 98702, Fr Polynesia. IFREMER, Ecosyst Insulaires Oceaniens, UMR 241, Taravao 98719, Fr Polynesia. C2 UNIV POLYNESIE FRANCAISE, FRANCE IFREMER, FRANCE SI TAHITI MONTPELLIER SE PDG-RBE-RMPF PDG-RBE-BOME-LALR IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 1.878 TC 20 UR https://archimer.ifremer.fr/doc/00201/31188/29587.pdf LA English DT Article DE ;Pearl oyster culture;Pinctada margaritifera;Biofouling;Growth;Reproduction AB In bivalve aquaculture, dominant fouling organisms are filter feeders which can compete for food with reared bivalves, sometimes causing mortality or reducing their growth rate. This study investigated the effect of biofouling on the farmed pearl oyster Pinctada margaritifera in two lagoons of French Polynesia. Survival, growth and reproduction of 2 year-old pearl oysters were monitored with regular sampling schedules, from the initial stage of colonization up to 20 months of biofouling accumulation. Control groups of pearl oysters were kept free of biofouling as is the current practice in pearl farms. After more than a year of monitoring, no significant difference was recorded in shell growth rate between pearl oysters reared with epibionts and the control group of pearl oysters, at both sites. Mean annual shell growth rate (height) was 30.5 ± 9.2 mm in Tahiti and 24.8 ± 7.7 mm in Mangareva. Neither the survival nor the reproduction indices were negatively affected by biofouling. In Mangareva, where biofouling development was quantified during 1 year, the rate of colonization appeared to be high during the first 3 months before slowing down. These results raise questions about the necessity of removing biofouling at this stage of pearl oyster production (i.e. before grafting). PY 2014 PD OCT SO Aquaculture SN 0044-8486 PU Elsevier Science Bv VL 434 UT 000345058700004 BP 18 EP 26 DI 10.1016/j.aquaculture.2014.07.012 ID 31188 ER EF