On the origin of Solovetskaya vendace Coregonus albula and of the syamozero smelt Osmerus eperlanus

Autor: O. N. Kholod, N. V. Gordeeva, O. P. Sterligova, G. A. Dvoryankin, D. S. Sendek
Rok vydání: 2009
Předmět:
Zdroj: Journal of Ichthyology. 49:23-31
ISSN: 1555-6425
0032-9452
DOI: 10.1134/s0032945209010032
Popis: The genetic analysis is made on the population of the European smelt Osmerus eperlanus occasionally introduced to Lake Syamozero (Karelia) and of the vendace Coregous albula supposedly acclimatized in Solovetskie Islands as a result of fish cultural activities of the Solovetskii Monastery. They are compared with several natural populations—possible donors for both introductions. Genetic variation in a sample of smelt was estimated by means of restrictase analysis of mtDNA (fragment ND1/ND2) in samples of vendace—by means of allozyme analysis of six isoenzyme systems. The probable population for the Syamozero smelt is the population of Onega Lake in spite of the previously noted greater morphological similarity of colonizers with the smelt of Ladoga Lake. A high level of genetic variation in the Syamozero smelt in comparison with native populations indicates that, beside the introduction from Onega Lake, there were repeated introductions from neighboring water bodies. The genetic analysis of the Solovetskaya vendace does not prove that the vendace appeared on islands due to acclimatization. Frequencies of alleles of allozyme loci in the Solovetskaya population significantly differ from frequencies in continental populations. Still, it is compared with some populations of the Arkhangelsk oblast. Estimations of genetic diversity of the Solovetskaya vendace turned out to be comparable with those in native populations.
Databáze: OpenAIRE
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