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Maternal variation in juvenile survival and growth of triploid hybrids between female rainbow trout and male brown trout and brook charr

Maternal variation in juvenile survival and growth of triploid hybrids between female rainbow trout and male brown trout and brook charr

Authors :
Jean‐Paul Fouriot
J. M. Blanc
Frédéric Vallée
Patrick Maunas
ProdInra, Migration
Ecologie Comportementale et Biologie des Populations de Poissons (ECOBIOP)
Institut National de la Recherche Agronomique (INRA)-Université de Pau et des Pays de l'Adour (UPPA)
Nutrition, Aquaculture et Génomique (NUAGE)
Institut National de la Recherche Agronomique (INRA)-Université Sciences et Technologies - Bordeaux 1-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)
Source :
Aquaculture Research, Aquaculture Research, Wiley, 2005, 36, pp.120-129
Publication Year :
2005
Publisher :
Hindawi Limited, 2005.

Abstract

Related sib-groups of rainbow trout × brown trout and rainbow trout × brook charr triploid hybrids and monospecific diploid and triploid rainbow trout controls were obtained from a common set of rainbow trout dams. On the basis of hybrid juvenile performances, 10 sib-groups were selected and the corresponding diploid rainbow trouts were raised up to adult stage. Females from each group of rainbow trout were used to produce a second generation of hybrid progeny, the performances of which were analysed for grandmaternal variation and relation with first-generation relatives. Results showed that hybrid traits (alevin yield and weight, survival and growth of fingerlings) were strongly influenced by maternal origin, and could be correlated to those of rainbow trout controls, but that maternal abilities had a low rate of inheritance. It was concluded that little improvement can be expected through selective breeding within parental populations.

Details

ISSN :
13652109 and 1355557X
Volume :
36
Database :
OpenAIRE
Journal :
Aquaculture Research
Accession number :
edsair.doi.dedup.....fc5a1b0b8845c4c3800665cfddf9b128
Full Text :
https://doi.org/10.1111/j.1365-2109.2004.01192.x