Ecology of preimaginal phases of mosquitoes in the north of Yakutia

Abstract

The experimental part of the work was carried out in the Momsky district of the Republic of Sakha (Yakutia) in 2008. Office processing of the collected material was carried out at the Yakut Scientific Research Institute of Agriculture, the All-Russian Research Institute of Veterinary Entomology and Arachnology. The larvae were taken with a net from the mill gas and their number was counted. To determine the density of larvae, a recalculation per 1 m2 of the water surface was performed. Then the larvae and pupae were placed in vessels with water and delivered to the laboratory, where they were preserved with 70% aqueous alcohol solution in 10 ml vials with rubber stoppers, the vials were supplied with labels. Samples were taken once a week, from the third decade of May to the third decade of July. A total of 14120 mosquito larvae were collected. district is located at 66°27ў18ўў north latitude and 143°13ў11ўў east longitude. In temporary reservoirs, the density of mosquito larvae in the second decade of June is up to 876 ind./m2. At the beginning of the third decade of June, the density of larvae reaches up to 1432 ind./m2. At the end of June, a decrease in the density of mosquito larvae to 233 ind./m2 was noted with a simultaneous increase in the number of pupae. The species composition of adults emerging from the cage was determined as Aedes punctor Kirby and A. hexodontus Dyar. The percentage of emergence from pupae is 95%. Mosquitoes have been flying since June.