FN Archimer Export Format
PT J
TI Reproductive effort of Pacific oysters: A trait associated with susceptibility to summer mortality
BT 
AF HUVET, Arnaud
   NORMAND, Julien
   FLEURY, Elodie
   QUILLIEN, Virgile
   FABIOUX, Caroline
   BOUDRY, Pierre
AS 1:1;2:1,2;3:1;4:1;5:3;6:1;
FF 1:PDG-DOP-DCB-PFOM-PI;2:PDG-DOP-DCB-PFOM-PI;3:;4:PDG-DOP-DCB-PFOM-PI;5:;6:PDG-DOP-DCB-PFOM-PI;
C1 IFREMER, Ctr Brest, UMR Physiol & Ecophysiol Mollusques Marins 100, F-29280 Plouzane, France.
   IFREMER, Lab Genet & Pathol, F-17390 La Tremblade, France.
   Univ Bretagne Occidentale, IUEM, UMR CNRS 6539, Lab Sci Environnement Marin, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   UBO, FRANCE
SI BREST
SE PDG-DOP-DCB-PFOM-PI
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.044
TC 49
UR https://archimer.ifremer.fr/doc/00006/11766/8502.pdf
LA English
DT Article
DE ;Bivalve mollusc;Crassostrea gigas;Reproduction;Selected lines;Summer mortality
AB Summer mortality of the Pacific oyster Crassostrea gigas is the result of a complex interaction between oysters, their environment and their pathogens. The physiological status of an oyster, especially its reproductive status, is suspected to play a significant role in the outcome of this interaction. As genetic variability exists for susceptibility to summer mortality, resistant (R) and susceptible (S) oyster lines were produced using a divergent selection scheme. The present paper reports a histological study on gonad area, which is representative of reproductive effort, in randomly chosen five R and five S oyster lines. The R lines showed a significantly lower gonad area than the S lines (P<0.001). with an estimated mean difference of 12.5%, whereas, taken together, R and S lines showed a similar distribution of gametogenic stages when sampled. Considering the lines separately, the significant difference in gonad area went up to 24% between R and S lines. The present data confirm and strengthen the negative correlation between reproductive effort and resistance to summer mortality observed in previous studies. Summer mortality of C. gigas in France could, therefore, be partly due to a physiological disorder and metabolic disturbance in oysters associated with their reproductive effort. This does not, however, imply a direct link between the cost of reproduction and mortality because other causal factors, such as pathogenic agents, could be the primary causal factors. (C) 2010 Elsevier B.V. All rights reserved.
PY 2010
PD JUL
SO Aquaculture
SN 0044-8486
PU Elsevier Science Bv
VL 304
IS 1-4
UT 000278796500012
BP 95
EP 99
DI 10.1016/j.aquaculture.2010.03.022
ID 11766
ER

EF