A. R. Koporikov

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339 Burbot larvae passively migrate downstream from spawning sites to shallow areas of the floodplain (Evropeitseva, 1946; Meshkov, 1967; Volodin and Ivanova, 1968; Sorokin, 1976; Pavlov et al., 1981; Bogdanov, 1989; etc.), where they undergo the second stage of development involving transition to active feeding. Their size in this period varies from 3.9 to(More)
Analysis of genetic diversity of burbot (Lota lota Linneus, 1758) mitochondrial control region (mtCR) haplotypes from geographically distant localities in the Ob-Irtysh River basin in comparison with distribution of known burbot haplotypes was conducted. mtCR fragments from burbot samples, obtained in two localities (longitudinal part of the Irtysh near(More)
The results of long-term observations on changes in the hepatosomatic index of burbot in the Lower Ob basin are presented. The dynamics of this index are considered as dependent on fish sex, stage of gonad maturity, period of reproductive cycle, body damage or abnormalities, and feeding intensity.
The results of long-term observations on changes in the relative body conditions of burbot (Lota lota L.) in the Lower Ob basin during the open channel period (June–September) are analyzed. Statistically significant strong positive dependence of the hepatosomatic index of spawners on the maximum flood level is revealed. An equation predicting the value of(More)
The genetic variability of burbot (Lota lota L., 1758) inhabiting the Ob-Irtysh and Taz river basins in Western Siberia has been studied based on the polymorphism of the hypervariable fragment of mtDNA control region (407 bp). The analysis of 134 fish samples revealed 30 haplotypes, 23 of which were new. Among haplotypes, previously detected in Eurasia and(More)
A study has been performed on the ecological, morphological, and genetic diversity of burbot (sample size n = 204 and n = 134, respectively) from eight localities of the Ob–Irtysh and Taz river basins, Western Siberia. Fish differentiation in body size and weight depending on the dominant type of migration behavior, foraging conditions, and physiographic(More)
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