The state of gonads in salmonids in the subarctic lakes of Gydan and Yamal peninsulas

Tyumen State University Herald. Natural Resource Use and Ecology

Release:

Bulletin of Tyumen State University. Medico-Biological Sciences (№6). 2012

Title:

The state of gonads in salmonids in the subarctic lakes of Gydan and Yamal peninsulas

Authors: Alexander G. Selyukov, Leonid A. Shuman, Innokentii S. Nekrasov

About the authors:

Alexander G. Selyukov, Dr. Sci. (Biol.), Professor, Department of Zoology and Evolution Ecology of Animals, University of Tyumen; ags-bios@yandex.ru

Leonid A. Shuman, Cand. Sci. (Biol.), Assistant, Department of Anatomy and Physiology of Humans and Animals, University of Tyumen; leonidshuman@yandex.ru

Innokentii S. Nekrasov, Instructor, Department of Zoology and Evolution Ecology of Animals, Tyumen State University; innok373@mail.ru

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Abstract:

The state of gonads in Arctic char and coregonids in the lakes of the Subarctic tundra of Gydan and Yamal peninsulas is investigated. There is used a technique of total accounting of oocytes using a laser scanning microscope. Despite the weak development of fodder base, high infestation by helminthes and a very short period of feeding, the studied fishes have no violations of gametogenesis, but some mature females pass the next spawning period. There is rapidly maturing (1+) lake form of siberian cisco detected (Yamal).

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