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| Dupont Nivet, M; Vandeputte, Marc; Vergnet, Alain; Merdy, O; Haffray, P; Chavanne, H; Chatain, Beatrice. |
| 253 full-sib families from 33 males and 23 females of European seabass were produced in a partly factorial mating design. All fish were reared in the same tank during 14 months, then 7000 of them were dispatched in four farms to different locations (France, Israel, Italy, Portugal) representing a wide variety of environmental conditions. Around 400 g mean weight, 1177 to 1667 fish in each site were weighed and length was measured. Condition factor (K) was calculated. Pedigrees were redrawn a posteriori using microsatellites markers: parental origin could be retraced for 99.2% of fish. Due to a high incidence of deformities, the useful sample size was reduced to 491-670 fish per site. Maternal effects were small. Using a simple animal model, heritability... |
| Tipo: Text |
Palavras-chave: Microsatellites; GxE interactions; Heritability; Growth; Seabass; Dicentrarchus labrax. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4404.pdf |
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| Vandeputte, Marc; Dupont Nivet, M; Haffray, P; Chavanne, H; Cenadelli, S; Parati, K; Vidal, Marie-odile; Vergnet, Alain; Chatain, Beatrice. |
| Selective breeding of European sea bass (Dicentrarchus labrax) receives a growing interest, as the estimated heritability of growth is medium to high. In this study, we compared the offspring of four groups of sea bass sires, mated with the same wild dams: wild (W), first generation of domestication (D), first generation of mass selection for length (M), first generation of PROSPER-like selection for length (P). The comparison was done both in replicated tanks (separate rearing) and in mixed tanks (mixed rearing) where sire origins were recovered by genotyping of eight microsatellite markers. Weight, length and growth rate were measured from day 238 post-fertilization (69 g mean weight) to day 611 post-fertilization (390 g mean weight). Both in mixed and... |
| Tipo: Text |
Palavras-chave: Nephrocalcinosis; Competition; Microsatellites; Parentage assignment; Realized heritability; Selection response; Growth; Selective breeding; Dicentrarchus labrax; European sea bass. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-5303.pdf |
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| Griot, Ronan; Allal, Francois; Brard‐fudulea, S; Morvezen, R; Haffray, P; Phocas, F; Vandeputte, Marc. |
| In the context of parentage assignment using genomic markers, key issues are genotyping errors and an absence of parent genotypes because of sampling, traceability or genotyping problems. Most likelihood‐based parentage assignment software programs require a priori estimates of genotyping errors and the proportion of missing parents to set up meaningful assignment decision rules. We present here the R package APIS, which can assign offspring to their parents without any prior information other than the offspring and parental genotypes, and a user‐defined, acceptable error rate among assigned offspring. Assignment decision rules use the distributions of average Mendelian transmission probabilities, which enable estimates of the proportion of offspring with... |
| Tipo: Text |
Palavras-chave: Microsatellites; Missing parents; Parentage assignment; Pedigree; SNP. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00587/69866/67767.pdf |
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