Сhromosomal Polymorphism of the Species Cryptochironomus Defectus (Kieffer, 1913) (Diptera, Chironomidae) from the Reservoirs Saratov Areas
Data on chromosomal polymorphism (the karyotype description, a spectrum and frequency of chromosomal reorganizations) larvas Cryptochironomus defectus (Кieffer, 1913) is cited, collected from polytypic reservoirs of the Saratov region (sites of the open and protected shoal of a water basin, ponds) during spring-year-old seasons 2001-2003 and 2010. High level of chromosomal polymorphism C defectus is registered: a share of individuals with heterozygotic inversions at larvas C. defectus fluctuates from 57.1 to 71.1%; the fverage of heterozygotic inversions on the individual changes from 1.06 to 1.52. Three various on inversion localization are found out.