Fluctuación estacional de Anopheles (Anopheles) pseudopunctipennis (Diptera: Culicidae) en un área palúdica de Salta, Argentina.

DANTUR JURI, M. J.; ZAINDENBERG, M. Y ALMIRÓN, W.

Montevideo, Uruguay

Jornada; III Jornadas Regionales de Mosquitos; 2003

Abstract Objective To study the anopheline mosquitoes, their seasonal distribution, and the climatic variables associated at a malarial area in the northeast of Salta Province, Argentina. Methods Samples were taken monthly between December 2001and December 2002, using CDC light traps and an aspirator. Three different kind of places (outside of dwellings, forest, edge of forest) of argentine Yungas were sampled. The number of Anopheles pseudopunctipennis collected were correlated with temperature, precipitation, humidity and atmospheric pressure recorded during the sample period. Results A total of 2,999 individuals were collected, corresponding 77.8% to Anopheles pseudopunctipennis, 10.1% to An. strodei, 4.3% to An. argyritarsis, 0.83% to An. rangeli, 0.3% to An. nuneztovari, 3.93% to An. (Arribalzagia) sp., 2.56% to An. (Nyssorhynchus) spp., and 0.13% to An. (Anopheles) spp. Anopheles pseudopunctipennis was captured during the whole sample period, in coincidence with moderate precipitation and temperatures, although the mean maximum humidity was the variable that better explain its seasonal distribution according to the correlation analysis. Conclusions The main abundance of An. pseudopunctipennis was recorded between September and December, being the springtime the most important period for malarial transmission in the area.