[Cytogenetic and phenotypic variation in central and peripheral populations of the malaria mosquito, Anopheles messeae Fall. (Diptera, Culicidae)].

Chromosome polymorphism and morphological variation in malaria mosquito Anopheles messeae larvae of populations from western Siberia, Kyrgyzstan, and southern Kazakhstan were studied. It is shown that the level of inversion polymorphism decreases at the boundary of the range. A shift in the phenotypic norm observed in the peripheral biotopes is attributed to direct selection larvae with "southwestern" chromosomal variants and to modification.