ISSN:
1365-2109
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract. One hundred specimens of the European seabass. Dicentrarchus labrax L., from a natural population (Cádiz, Spain) were analysed by starch gel electrophoresis for 23 enzymes; 49 loci were identified, of which five were polymorphic (ADH*, AAT-3*, EST-.3*, MEP-1* and SOD-2*) P = 10·2% and HQ = 1·8%. Twenty specimens from a hatchery at Tinamenor in northern Spain (Fl progeny from wild) were analysed for 28 different enzymes. A total of 61 loci were identified of which 4 were polymorphic (LDH-1*, LDH-2*, MEP-1*, and XDH-2*) P = 6·6%,Ho= 1·5%. A total of 31 enzyme systems and 79 different loci were analysed in the two populations. The results suggest that the Cádiz and Tinamenor stocks are reproductively isolated and show a level of stock differentiation not previously known in populations of this species. An estimate of genetic distance based on the 31 loci compared in both populations gave a value of D=0·012+0·018 and a genetic similarity of I=0·988. The implications of these results for fisheries and aquaculture are briefly discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2109.1991.tb00757.x
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