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Sympatric forms of charrs (gen. Salvelinus) from Ayan Lake (Taimyr Peninsula)статья
- Автор: Pavlov S.D.
- Журнал: Voprosy ichtyologii
- Том: 37
- Номер: 4
- Год издания: 1997
- Первая страница: 465
- Последняя страница: 474
- Аннотация: The paper reports a study of sympatric morphs co-occurring in the lake and their relationships as deduced from morphoecological and genetic analyses. A new morph of the genus Salvelinus known locally as 'putoranchik' is described. This fish is a small slow-growing planktophagous form whereas the lake and the lake-river chars are large fast-growing predators distinguished mainly by their length-weight relationships, growth, feeding and spawning grounds in the lake. Sympatric morphogenesis is believed to be underlain by trophic polymorphism. Genetic similarity of the lake and the lake-river forms is confirmed by similarity of most of their morphoecological characteristics. Insignificant genetic differences between putoranchik and the predatory chars suggest the possibility of gene exchange between them
- Добавил в систему: Павлов Сергей Дмитриевич