Morphometric indices of the bream (Abramis brama) in the Kremenchuk reservoir

Abstract

The article considers the long-term resultant action of complex of existing factors on the morphometric indices of the bream (Abramis brama L.) in the Kremenchuk reservoir. The breams with the best exterior indices were fished by traditional fishing net during more than 40 years. This fact resulted in the survival of individuals with certain direction of variability and conduces to the change of an average index to particular value. As a result of the research, functional accordance of the morphometric indices with the environmental conditions was ascertained.