INTRODUCTION In Colombia there are three Anopheles species implicated in malaria transmission as primary vectors; however, the local role of some Anopheles species must still be defined. OBJECTIVE To determine the abundance, composition and natural infection rates for Anopheles mosquitoes with Plasmodium spp. in two malaria-endemic regions of Colombia. MATERIALS AND METHODS Anopheles mosqui...

there was a statistically significant difference in the number of oocysts, developed in anopheles stephensi which had fed on mice infected with chloroquine resistant strains (ny 151./2b and. p.y. nigeriensis) and treated with 1 or 10 mg/kg chloroquine phosphate, when compared with the mosquitoes fed on saline injected control animals infected with the same lines. there was no significant differ...

two strains of anopheles atroparvus, one resistant and another sceptible to ddt and two of anopheles stephensi, one resistant and one susceptible to ddt were tested for their irritability to ddt. various laboratory investigations of the effects of insecticides on mosquito behavior and their irritability were carried out. in these series of experiments a comparison was made between the results o...

Based on the results of comparative analyses of 1,039 specimens of several progenies of Anopheles nuneztovarifrom three localities in Colombia, eight costal wing spot patterns were observed. Patterns I and III were the most frequent: 77.96% and 11.36%, respectively. Using the diagnostic characters ratio of the length of the basal dark area of hind tarsomere II/length of hind tarsomere II, ratio...

aim: this study investigates the intraspecific competition, for food and density amongst larvae of anopheles stephensi (main malaria vector in south iran). material & methods: the effects of 4 selected food quantities (1x,2x,4x,6x) and 5 larval densities (0.1 to 3 larva/cm2) were tested individually or in combination on 7 biological indexes of the vector and the results were statistically ...

Updated information on the distribution of Anopheles in the Valencian Autonomous Region of Eastern Spain is presented. Larval surveys over a four year period (20052008) detected seven species, all in the subgenus Anopheles, namely Anopheles algeriensis, An. atroparvus, An. claviger, An. maculipennis, An. marteri, An. petragnani and An. plumbeus. Distribution, biology and ecology of each are dis...

Morphological analysis of anopheline mosquitoes from Kasane, Botswana, revealed a new species, Anopheles seretsei, that is closely related to Anopheles azevedoi and Anopheles listeri. A description of the type locality and biological characteristics of An. seretsei is given. Comparisons are made with An. listeri and An. azevedoi. The banding patterns of the giant polytene chromosomes of An. ser...

The endosymbiotic bacterium Wolbachia is being investigated as a potential control agent in several important vector insect species. Recent studies have shown that Wolbachia can protect the insect host against a wide variety of pathogens, resulting in reduced transmission of parasites and viruses. It has been proposed that compromised vector competence of Wolbachia-infected insects is due to up...

Results of a recent survey of the 3 species of Anopheles mosquitoes, Anopheles (Nyssorhynchus) aquasalis, Anopheles (Nyssorhynchus) argyritarsis, and Anopheles (Anopheles) pseudopuncfipennis, on the island of Grenada are contrasted with the only other published survey of these species on Grenada, which was published in 1938. Results suggest that a significant change in the abundance and distrib...

survivorship of the immature stage of anopheles culicifacies in damar district were studied through sampling larval and pupal stages from stream bed pools and rice fields during may and august 1993. the duration of each larval instar and the pupal stage was also determined in the laboratory for preparing the survivorship curves and the construction of the life tables. mortality from egg to adul...