FN Archimer Export Format
PT J
TI Influence of parentage upon growth in Ostrea edulis: evidence for inbreeding depression
BT 
AF NACIRI-GRAVEN, Y
   LAUNEY, Sophie
   LEBAYON, N
   GERARD, Andre
   BAUD, Jean-Pierre
AS 1:;2:;3:;4:;5:;
FF 1:;2:PDG-DRV-RA-GAP;3:;4:PDG-DRV-RA;5:PDG-DRV-RA;
C1 IFREMER, LGP, F-17390 La Tremblade, France.
   IFREMER, LCPL, F-85230 Bouin, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
SI LA TREMBLADE RONCE
   NANTES
SE PDG-DRV-RA-GAP
   PDG-DRV-RA
IN WOS Ifremer jusqu'en 2018
IF 1.862
TC 20
UR https://archimer.ifremer.fr/doc/2000/publication-2719.pdf
LA English
DT Article
AB Genetic variability for growth was analysed in three populations of Ostrea edulis, selected for resistance to the protozoan parasite Bonamia ostreae. This study was undertaken first to determine the potential for selection for growth in populations that have never been selected for this character, and second to estimate heterosis versus inbreeding depression. Growth was monitored in culture for 10 months. The selected populations (namely S85-G3, S89I-G2 and S89W-G2), their crossbred population and a control population were composed of full-sib families whose parents were already genotyped using five microsatellite markers. This genotyping allowed the estimation of genetic relatedness among pairs of parents. The parents' relatedness was then correlated with the growth performance of their offspring within each of the three populations, and inbreeding depression was estimated. The population effect for growth was highly significant, with the crossbred population having the highest growth rate, followed by S89I-G2 and S89W-G2, S85-G3 and the control population. The within-populations family effect was also highly significant, indicating, as well as the high value for heritability at the family level (between 0-57 and 0-92), that a potential for a further selection for growth still exists within the three populations. Estimates of inbreeding depression (relative to the mean, for complete inbreeding) were high (1 for S891-G2, 0.44 for S89W-G2 and between 0-02 and 0-43 for S85-G3), which correlates with the apparent heterosis for growth observed in the crossbred population. These results are discussed in the context of the future management of the selected populations
PY 2000
PD OCT
SO Genetical Research
SN 0016-6723
PU Cambridge Univ Press
VL 76
IS 2
UT 000168935400004
BP 159
EP 168
ID 2719
ER

EF