Gene diversity analysis in natural populations and cultured stocks of turbot (Scophthalmus maximus L.)
- 1 February 1997
- journal article
- Published by Wiley in Animal Genetics
- Vol. 28 (1) , 28-36
- https://doi.org/10.1111/j.1365-2052.1997.00070.x
Abstract
The genetic variability of eight fish‐farm and three natural populations of turbot was studied by electrophoretic analysis of 35 enzymatic loci. The results showed low genetic variability in natural populations of turbot (HT = 0·029 ± 0·013) in comparison with other flatfish species. Great genetic similarity was revealed among the natural populations studied, which indicates high rates of gene flow in this species. The hatchery stocks showed less genetic variation than the wild populations analysed, which suggests genetic drift phenomena involved in the foundation and management of broodstocks. In addition, the heterozygosity differences detected among the hatchery stocks analysed are correlated with inverted levels of fluctuating asymmetry, which supports the existence of inbreeding depression phenomena in turbot culture.Keywords
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