FN Archimer Export Format
PT J
TI A polygenic hypothesis for sex determination in the European sea bass - Dicentrarchus labrax
BT 
AF VANDEPUTTE, Marc
   DUPONT NIVET, M
   CHAVANNE, H
   CHATAIN, Beatrice
AS 1:1,2;2:1;3:3;4:2;
FF 1:;2:;3:;4:PDG-DOP-DCM-BOME-LALR;
C1 INRA, UR544, F-78350 Jouy En Josas, France.
   IFREMER, F-34250 Palavas Les Flots, France.
   Panitt Pugliese, I-72010 Torre Canne Di Fasano, Italy.
C2 INRA, FRANCE
   IFREMER, FRANCE
   PANITT PUGLIESE, ITALY
SI PALAVAS
SE PDG-DOP-DCM-BOME-LALR
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-europe
IF 4.001
TC 111
UR https://archimer.ifremer.fr/doc/2007/publication-3526.pdf
LA English
DT Article
DE ;Dicentrarchus labrax;fish;growth;heritability;sex ratio
AB Polygenic sex determination, although suspected in several species, is thought to be evolutionarily unstable and has been proven in very few cases. In the European sea bass, temperature is known to influence the sex ratio. We set up a factorial mating, producing 5.893 individuals from 253 full-sib families, all reared in a single batch to avoid any between-families environmental effects. The proportion of females in the offspring was 18.3%, with a large variation between families. Interpreting sex as a threshold trait, the heritability estimate was 0.62 +/- 0.12. The observed distribution of family sex ratios was in accordance with a polygenic model or with a four-sex-factors system with environmental variance and could not be explained by any genetic model Without environmental variance. We showed that there was a positive genetic correlation between weight and sex (r(A) = 0.50 +/- 0.09), apart from the phenotypic sex dimorphism in favor of females. This supports the hypothesis that a minimum size is required for sea bass juveniles to differentiate as females. An evolution of sex ratio by frequency-dependent selection is expected during the domestication process of Dicentrarchus labrax populations, raising concern about the release of such fish in the wild.
PY 2007
PD JUL
SO Genetics
SN 0016-6731
PU Genetics society of America
VL 176
IS 2
UT 000247870700028
BP 1049
EP 1057
DI 10.1534/genetics.107.072140
ID 3526
ER

EF