Genetic characterization and relatedness of wild and farmed Eurasian perch ( Perca fluviatilis ): Possible implications for aquaculture practices - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Aquaculture Reports Année : 2016

Genetic characterization and relatedness of wild and farmed Eurasian perch ( Perca fluviatilis ): Possible implications for aquaculture practices

Résumé

Aquaculture of the Eurasian perch, Perca fluviatilis, in recirculating systems has emerged over the past decades to become a significant way of diversification for inland areas in Europe. The development of such a production relies partly on the improvement of growth performance (i.e., reducing production costs), which requires suitable genetic management of broodstocks and the development of selective breeding programs. In this context, the present study was undertaken assessing for the first time the genetic diversity of farmed stocks of perch. Twelve microsatellite loci were used to investigate the genetic diversity of nine farmed stocks (547 individuals) from two perch farms located in France and their supposedly wild founder population from Lake Geneva (394 individuals). First, the wild population displayed the lowest genetic diversity and differed genetically from all farmed populations except one, XB2. Second, genetic diversity did not decrease between farmed breeders and their potential offspring. However, in the three groups of broodstock-offspring the number of alleles decreased by 10%, 21%, and 15%, respectively. In addition, effective population size decreased in all offspring groups. A family structuring was also observed among broodstocks and their offspring, with an unequal family contribution being suspected. In the absence of parental information, these results attest to the utility of genetic tools to evaluate genetic diversity and the necessity of a monitoring program to maintain genetic variability among farmed perch. Genetic variability among farmed stocks appears to be sufficient for perch production to be sustainable and selective breeding programs to be developed.

Domaines

Biologie animale
Fichier principal
Vignette du fichier
1-s2.0-S2352513415300314-main.pdf (2.18 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-02994635 , version 1 (24-03-2021)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Sana Ben Khadher, Pascal Fontaine, Sylvain Milla, Jean-François Agnèse, Fabrice Teletchea. Genetic characterization and relatedness of wild and farmed Eurasian perch ( Perca fluviatilis ): Possible implications for aquaculture practices. Aquaculture Reports, 2016, 3, pp.136-146. ⟨10.1016/j.aqrep.2015.12.003⟩. ⟨hal-02994635⟩
110 Consultations
60 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More