Biochemical genetic study of European whitefish (Coregonus lavaretus) in Lake Mondsee, Upper Austria

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. Fi...

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Bibliographic Details
Published in:Aquatic sciences 1995-01, Vol.57 (2), p.127-135
Main Authors: LUCZYNSKI, M, RITTERBUSCH-NAUWERCK, B
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Coregonus lavaretus
Freshwater
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
Population genetics, reproduction patterns
Vertebrata
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Summary: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.
ISSN:1015-1621
1420-9055
DOI:10.1007/BF00877381