On the European smelt Osmerus eperlanus introduced to Bolshoi Kisegach Lake in the South Urals
Autor: | K. A. Korlyakov, I. S. Mukhachev |
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Rok vydání: | 2009 |
Předmět: | |
Zdroj: | Journal of Ichthyology. 49:668-673 |
ISSN: | 1555-6425 0032-9452 |
Popis: | In the European smelt introduced to Bolshoi Kisegach Lake (the South Urals) in 1930 the following parameters are investigated: size-age parameters, feeding, fecundity, infestation with parasites, and distribution of the water area. The smelt occupied a free niche of the profundal zone with a permanent low temperature (4–10°C). In the introduced smelt, there is no predation, it is planktivorous, its parasite fauna is impoverished, and the age series is reduced. The age structure and preference of cold water of the isolated population confirm the leading role of the temperature factor in the origin of short-cycle forms. |
Databáze: | OpenAIRE |
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