Ecological and fishery meliorationof lakes of Armison district (Tyumen region)

About the authors:

Igor S. Mukhachev, Dr. Si. (Biol.), Professor, Department of Zoology and Evolutional Ecology of Animals, Institute of Biology, University of Tyumen; fishmis@mail.ru

Mikhail M. Medvedev, post-graduate student, State Agricultural University of the Northern Transurals (Tyumen)

Abstract:

The article highlights the key areas of complex reclamation of Tyumen region forest-steppe lakes. At present due to the introduction of methods of integrated reclamation of suffocated type steppe lakes with crucian carp core of fish community, valuable fish (carp, pike, whitefish, herbivorous, etc.) has begun to be grown in fish farms using a long-term feeding technology. Prior to this, in the south of the Tyumen region, including Armizon district, the technology of growing marketable peled fingerlings weighing 70-150 g/pc. (from the immigration of larvae) and two year old carp weighing 0.6-0.7 kg/pc. (from the immigration of yearling) was prevalent. Total catches of marketable fish ranged from 30-40 to 70-80 kg/ha. Lakes of Armizon district are shallow — 2-3 m, subject to suffocation phenomena, but they have high rates of fodder supply development. On the basis of modern innovative technologies developed by Gosrybtsentr (State Fish Center) and Tyumen universities — Tyumen State University and State Agricultural University of Northern Transurals — lakes users (fish farms) can grow food fish of large size (0.8-2.5 kg/pc.) which is in high demand with consumers and the total annual catches per 1 ha have begun to make 130-180 kg and more. Fish grown on natural self-renewed fodder supply of Armizon forest-steppe lakes are “environmentally friendly bio-products” — perfectly safe for health of a human consuming the fish using different ways of cooking. This is due to the fact that water basins of Armizon district are far from modern industrial centers, and they do not receive products of anthropogenic activities. The new technologies of marketable fish farming using reclamation techniques are deepening of lakes, loosening of sediments, water aeration in winter, annual immigration of polyculture of viable valuable young fish. These technologies are relevant, highly profitable and should be included in the arsenal of the agro-industrial complex of Tyumen region.

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