[Study of the karyotype of the malaria mosquito].

A study of the karyotype composition of 22 geographycally removed natural populations of the malarial mosquito Anopheles messeae Fall revealed a chromosomal polymorphism characteristic of the whole species. 13 paracentric inversions were detected, no other gene arrangements being discovered. All the inversions can be divided into two classes: 1) wide spread inversions in hetero- and homozygous forms; 2) endemic ones discovered in individual populations in the form of heterozygotes. According to the presented photomap of salivary gland chromosomes, the inversion localization are as follows: IL1 (2a--4a), IL2 (1c--4a), IL3 (2a--3b), IL4 (1c--3b), IIR1 (7c--12c), IIR2 (10b--14b), IIL1 (15b--17a), IIIR1 (24a--26c), IIIR2 (23a--24c), IIIR3 (23b--25c), IIIR4 (27c--29c), IIIR5 (27d--30c), IIIL1 (34a--39d).