Agrarian
Bulletin
of the Urals

Russian Journal of Agricultural Research

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ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 01 (107) 2013

Экология

Петрачук Е.С. преподаватель Тюменская государственная сельскохозяйственная академия

Янкова Н.В. кандидат биологических наук, старший научный сотрудник Госрыбцентр

Крохалевский В.Р. кандидат биологических наук, доцент, заместитель генерального директора Тюменская государственная сельскохозяйственная академия, Госрыбцентр

УДК:591.4:597.554.3(282.4)

The ecological variability of morphometric features of the Ob-Irtysh basin bream Abramis brama

The formation of bream population in the Ob-Irtysh basin oc-

curred owing to the fact of its multiple immigration into various ar-

eas of the basin. Moreover, the expansion of the bream natural habi-

tat encouraged the acquirement of several adaptations. The cluster

analysis of the meristic and plastic characters revealed the maximum

divergency of the bream morphotype from the most geographically

remote areas. The discriminant analysis of the morphometric char-

acters’ combination of the Ob-Irtysh basin bream found the intraspe-

 cific morphologic differentiation: in the zonal aspect extreme north

bream cluster is phenotypically isolated and the lake-type cluster

is phenotypically isolated from the azonal aspect. The bream in the

Ob-Irtysh basin is represented by separate subpopulations in the lake

Monastyrskoe and in the Lower Ob. A significant transgression of the

morphological characters is observed in the bream of the Novosibirsk

Reservoir, the Central Ob, the Irtysh and its inflows.


Keywords:

bream Abramis brama, the Ob-Irtysh basin, morphometry.


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5. Mina M. V., Klevezal G. A. Rost zhivotnyh. M : Nauka, 1976. 291 s.

6. Ivanter E. V., Korosov A. V. Vvedenie v kolichestvennuyu biologiyu. Petrozavodsk, 2000. 318 s.

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