Biochemical genetic study of European whitefish (Coregonus lavaretus) in Lake Mondsee,Upper Austria |
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| Authors: | M Luczynski B Ritterbusch-Nauwerck |
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| Institution: | (1) Department of Basic Fishery Sciences, Olsztyn University of Agriculture and Technology, 10-718 Olsztyn-Kortowo Bl. 37, Poland;(2) Scharfling 8, A-5310 Mondsee, Austria |
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| Abstract: | Mature coregonids of Lake Mondsee were caught during spawning time on three known spawning sites. The aim of the study was to reveal whether the three stocks are reproductively isolated, and in consequence to decide whether they should be managed as separate stocks or as one panmictic population.Fish were examined morphologically and their tissue samples were examined electrophoretically for the enzyme products of 37 genetic loci.The gill-raker numbers (28–40) and electrophoretic alleles were typical for European whitefish,Coregonus lavaretus. No genetic differentiation (Nei's genetic distance D = 0.000) was found between the three samples studied. The genetic characteristics of the Lake Mondsee whitefish population, based on pooled genetic data, was compared to several other European whitefish populations. The average heterozygosity (6.5%) was high as usually in whitefish; genetic distances between the Lake Mondsee and three other European whitefish populations were within the range reported for the geographically distant populations of the species. Management implications of the results are briefly discussed.Contribution No. 21 in the Program of Joint Investigation of Holarctic Fishes among Russia, Canada, Finland, and Poland |
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| Keywords: | Allozyme biochemical genetics Coregonus lavaretus electrophoresis |
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