FN Archimer Export Format
PT J
TI Growth and gonad development of the tropical black-lip pearl oyster, Pinctada margaritifera (L.), in the Gambier archipelago (French Polynesia)
BT 
AF LE MOULLAC, Gilles
   TIAPARI, Jerome
   TEISSIER, Hinano
   MARTINEZ, Elodie
   COCHARD, Jean-Claude
AS 1:1;2:1;3:1;4:2;5:3;
FF 1:PDG-RBE-RMPF-EP;2:PDG-RBE-RMPF-EP;3:PDG-RBE-RMPF-EP;4:;5:PDG-ODE-LER;
C1 IFREMER, Ctr Pacifique, Dept Lagon Environm Aquaculture Durable Polynesie, Lab Domesticat Huitre Perliere, Taravao 98719, Fr Polynesia.
   Observ Oceanol Villefranche, Lab Oceanog Villefranche, F-06238 Villefranche Sur Mer, France.
   IFREMER, Ctr Brest, Dept Environm Littoral & Ressources Aquacoles, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   OBSERV OCEANOL VILLEFRANCHE, FRANCE
   IFREMER, FRANCE
   UNIV PARIS 06, FRANCE
SI TAHITI
   BREST
SE PDG-RBE-RMPF-EP
   PDG-ODE-LER
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 1.04
TC 13
UR https://archimer.ifremer.fr/doc/00040/15099/13570.pdf
LA English
DT Article
DE ;Pearl oyster;Pinctada margaritifera;Growth;Reproduction;Temperature;Chlorophyll;Seasonality;Gambier archipelago
AB The growth and reproductive cycle of cultured black-lipped pearl oysters, Pinctada margaritifera (L.), were studied in the Gambier Islands (134°52' W, 23°07' S) from September 2002 to August 2003. Temperatures were recorded throughout the year, revealing seasonal temperature variations between 22.3 °C and 27.8 °C. The mean annual chlorophyll a value, as computed from satellite data, was 0.188 ± 0.075 µg L-1. To study growth and reproduction, 720 two-year-old individuals were ear hung on longlines suspended at a depth of 7 m. Samples were taken twice a month to obtain the following measurements: shell height; wet weight of flesh and total oyster; dry weight of adductor muscle, mantle and visceral mass; and glycogen content. Gonad development was also studied by histology on parallel samples. Growth was relatively fast during the first six months of the study: average shell height increased from 89.1 ± 9.1 to 119.7 ± 10.8 mm and total weight from 93.4 ± 24.5 to 155.1 ± 33.6 g, between September and the end of March. Subsequently, from April to August, no significant growth was observed for shell and flesh, while the muscle weight decreased significantly. Condition index (CI), defined as the ratio of wet weight of the visceral mass to shell weight, and histological changes in the gonad revealed 3 significant reproductive events of different intensities. The analysis of correlations revealed a specific effect of the chlorophyll a concentration on the growth of shell and soma, and one of the temperature on tissue glycogen content. This study also showed also that CI could be an efficient indicator of reproductive events in pearl oyster. It thus appears that the development of gonads goes on throughout the year in the Gambier Islands, without any detectable phase of sexual rest.
PY 2012
PD APR
SO Aquaculture International
SN 0967-6120
PU Springer
VL 20
IS 2
UT 000304103100008
BP 305
EP 315
DI 10.1007/s10499-011-9460-x
ID 15099
ER

EF