We studied blood serum albumins in European (Acipenser ruthenus L.) and Siberian (A. ruthenus marsiglii Brandt) sterlet using disk electrophoresis in polyacrylamide gel. The albumins were shown to be controlled by three codominant alleles of a single locus (ALB* a, b, c). In European sterlet, all six theoretically possible genotypes were described, one of which (ALB*c/c) occurred extremely rarely (one individual). Siberian sterlet was found to be monomorphic for albumins: all fish examined had the ALB*a/a genotype. There was no correlation between albumin patterns and fish fatness. In a number of samples from the Volga River basin, spatial and temporal differentiation was found and analyzed. The results suggest that construction of hydroelectric stations may provoke massive and prolonged sterlet migrations.
Russian Journal of Genetics – Springer Journals
Published: Mar 15, 2005
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