About approaches to studying of the microevolutionary phenomena in connatural chironomids populations. nonequilibrium of populations as stable state

Abstract

Frequencies of disk sequences in polytene chromosomes from sialadens of larvae of three chironomids spesies are analysed. Cases of a deflection of population frame from expected under Hardy-Vajnberg law are statistically confirmed. Allo-cation of frequencies of individuals with different level of heterozygosity in popu-lation of Camptochironomus tentans is investigated. Influence of driving and stabi-lising selection on population is shown. The mean of an assessment of influence of different disk sequences on fitness on the basis of single assemblies is offered. Sta-bility of nonequilibrium of the investigated populations as a homeostasis sign is noted.

Keywords

polytene chromosomes / polymorphism / nonequilibrium / fitness / selection / homeostasis

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Zhirov S.V., Mylnikov S.V.