ENVIRONMENTAL VARIABLES AND THEIR INFLUENCE ON COQUILLETTIDIA MOSQUITOES AT PARA STATE, BRAZIL

The Amazon region is considered one of the most important ecosystems that encompass the largest biodiversity of the planet. Among this biodiversity there are vector diseases where, the dynamics of transmission are complex systems of interactions between insects, parasites and animal hosts that are associated with environmental determinants that contribute to the intensity of transmission. The genus Coquillettidia is one of them comprising the tribe Mansoniini, which includes 57 species. Females of several species are voracious, opportunistic blood feeding, becoming serious pests to humans in areas of Africa, Europe, and North and South America. Moreover, some species are involved in the transmission of viruses to humans and domestic animals. Therefore, this study aims to characterize the impact of atmospheric variables, including CO2, on the Conquiletidia species of mosquito population variability at Caxiuinã Station, Pará St., North of Brazil, in Amazonian region, during 5 Campaigns in 2005-2006. The preliminary results suggest that there is no clear CO2 variability on Coquillettidia population densities where the total period is analyzed. However, when it is analyzed separating nighttime and daytime there is a clear positive association between this greenhouse gas and the genus Coquillettidia at nighttime. Precipitation amount affects these mosquitoes population density negatively as expected due to the physical impact of the raindrops. Air temperature is another variable which affects negatively associated with Coquillettidia.