[Inversion polymorphism in the malarial mosquito, Anopheles messeae. III. The temporal dynamics of the inversion frequencies in the population of the center of a geographic range].

The karyotypic structure of the studied population shows the clear temporal differentiation. The frequencies of the homozygotes IIR/IIR, IIIR1/IIIR1 and IIIL/IIIL increase to the middle of the reproductive period. This homozygotes are initial gene arrangements in the phylogenetic sense and their adaptive value is evidently higher than the alternative homozygotes during the population flowering. Inter-year correlations of the dynamic frequencies of several gene arrangements appears to be due to density-dependent selection. The population karyotypic structure is characterised by a high dynamics during the season. However, no directional displacement of the inversion frequencies was observed. This stability is explained by homeostasis of the population genetic structure.