RESUMEN
The authors characterize the annual cycle of An. pulcherrimus population, distinguish the stages of this cycle that differ by the population composition and number and by the size of its area. The spatial structure of the population depends on the site of water bodies for wintering and the conditions at different territories. High numbers of mosquitoes were found in the southern part of the oasis at villages of rice-growing farmers. Mosquito population densities in the central parts of the oasis are much lower and are increased nearby sandy islets.
Asunto(s)
Agricultura , Anopheles/crecimiento & desarrollo , Animales , Ecología , Conducta Alimentaria , Femenino , Larva/crecimiento & desarrollo , Oryza , Densidad de Población , Estaciones del Año , UzbekistánRESUMEN
Data on fauna of bloodsucking mosquitos (Culicidae), obtained during the survey in the irrigated part of Takhta-Kupyr District of Kara-Kalpakia in 1988-1989, are presented. The density of mosquito populations of mass species in different parts of the oasis is, to a great extent, caused by the presence of reservoirs of different types and also by the features of anthropogenic landscapes.
Asunto(s)
Agricultura , Culicidae/clasificación , Animales , Ecología , Conducta Alimentaria , Larva/clasificación , Densidad de Población , Estaciones del Año , UzbekistánRESUMEN
The optimal bactoculicide/sphaerolarvicide ratio in combination using against Aedes aegypti larvae was established in laboratory by selection. The field trials of the selected BS/BT sample containing the ingredients in titer: bactoculicide-83, sphaerolarvicide-17 were conducted in the arid area of Central Asia. With 1 g/m2, complete mortality of Culex, Aedes and Anopheles larvae was obtained with the residual larvicidal action of 15 days. It is recommended to carry out more large-scale trials of the preparation against Anopheles larvae in different regions.
Asunto(s)
Bacillus thuringiensis , Bacillus , Toxinas Bacterianas , Culicidae , Insecticidas , Animales , Combinación de Medicamentos , Larva , Control de Mosquitos , Compuestos Orgánicos , Factores de TiempoRESUMEN
Large-scale trials of bacterial insecticides (Bac. sphaericus and Bac. thuringiensis) and of 5 synthetic pyrethroids were carried out in Nukus, Uzbekistan, in order to evaluate their effectiveness against Culex pipiens molestus Forsk (Diptera: Culicidae) breeding in flooded basements in urban areas. Lambdacyhaothrine (Karate, 5% e.c.) in the dosage of 0.01 g/m2 A. I. was found to be the most effective. Application of permethrine containing thermosublimated briquettes for quick elimination of adult mosquitoes combined with application of residual larvicides proved to be the best way to control basement breeding mosquitoes.
Asunto(s)
Vivienda , Control de Mosquitos/métodos , Animales , Culex , Insecticidas , Densidad de Población , Uzbekistán , AguaRESUMEN
Two residual insecticides (Icon 10% WP, ICI and Ficam W 80% WP, CAMCO) were in 1989 tested in field trials in Tajikistan, Azerbaijan and Uzbekistan against Anopheles superpictus, An. sacharovi, An. pulcherrimus, An. martinius, Culex pipiens, Aedes caspius, and Ae. vexans. In dosages recommended by the producing companies (0.025 g/m2 a. i. for Icon and 0.4 g/m2 for Ficam), the above preparations showed residual action during 2-3 months. Icon and Ficam did not cause irritability and repellency in mosquito, which did not migrate to unsprayed rooms of cattle sheds. In areas where the experimental trials were large-scale, a stable decrease in mosquito density was achieved. An insecticide action of ICON was also noted on house flies, cockroaches, bed bugs, fleas and spiders.