FN Archimer Export Format
PT J
TI Identifying Robust Proxies of Gonad Maturation for the Protandrous Hermaphrodite     Tridacna maxima     (Röding, 1798, Bivalvia) from Individual to Population Scale
BT 
AF MENOUD, Mathilde
   VAN WYNSBERGE, Simon
   LE MOULLAC, Gilles
   LEVY, Peva
   ANDREFOUET, Serge
   REMOISSENET, Georges
   GAERTNER-MAZOUNI, Nabila
AS 1:1,2;2:1,3;3:2;4:2;5:;6:4;7:1;
FF 1:PDG-RBE-RMPF;2:;3:PDG-RBE-RMPF;4:PDG-RBE-RMPF;5:;6:;7:;
C1 Univ Polynesie Francaise, Lab Excellence CORAIL, UMR EIO 241, BP 6570, Faaa, Tahiti, Fr Polynesia.
   IFREMER, Lab Excellence CORAIL, UMR EIO 241, BP 7004, Taravao 98719, Tahiti, Fr Polynesia.
   Univ Reunion, CNRS, Lab Excellence CORAIL, Inst Rech Dev,UMR ENTROPIE 9220, 101 Promenade Roger Laroque,BP A5, Noumea 98848, New Caledonia.
   Direct Ressources Marines & Minieres, Fare Ute, Immeuble Caill, BP 20, Papeete, Tahiti, Fr Polynesia.
C2 UNIV POLYNESIE FRANCAISE, FRANCE
   IFREMER, FRANCE
   UNIV LA REUNION, FRANCE
   DIRECT RESSOURCES MARINES & MINIERES, FRANCE
SI TAHITI
SE PDG-RBE-RMPF
UM EIO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 0.721
TC 13
UR https://archimer.ifremer.fr/doc/00333/44441/44111.pdf
LA English
DT Article
DE ;giant clam;marine bivalve;reproduction;spawn;Tatakoto atoll;histology;Tridacna maxima
AB Monitoring gonadmaturation for protandrous and functional hermaphrodite species such as the giant clamTridacna maxima is difficult due to the juxtaposition and relative proportion ofmale and female tissues in the gonad [gonadal sex ratio (GSR)]. Here, the relevance of the widely used gonadosomatic index (GSI) as proxy of giant clam gonad maturation is tested with a large dataset (n = 265). Gonadosomatic index is compared with other indices, namely the proportion of the male part harboring spermatozoids, the proportion of empty oocyte follicles, the mean oocyte diameter, and the oocyte elongation. At gonad scale, high index variability highlighted partial spawning. At individual scale, male and female maturation proxies were contrasted, showing either asynchronous emissions of male and female gametes or contrasted spermatogenesis and oogenesis duration. The GSI was mostly driven by the number and diameter of oocytes and therefore it is recommended here as primary proxy for female maturity. Except for the oocyte elongation, all indices were affected by the GSR, which ruled out drawing conclusions at population scale. These results highlight the need for maturation stage proxies that are optimized for functional hermaphrodite species.
PY 2016
PD APR
SO Journal Of Shellfish Research
SN 0730-8000
PU Natl Shellfisheries Assoc
VL 35
IS 1
UT 000376743800007
BP 51
EP 61
DI 10.2983/035.035.0107
ID 44441
ER

EF