Statistical influence of climate on the population density of culex and coquillettidia mosquitoes

Abstract

We carried out this study in the area of ​​“Estação Científica Ferreira Penna” (FPSS), located in the Caxiuanã National Forest, in the state of Pará, eastern Amazon. This biome is considered one of the most important ecosystems with the greatest biodiversity of insects and plants on the planet. The climate records were obtained from the INMET meteorological database (BDMet), in addition to information from a microclimatic tower belonging to the Scientific Program “The Large Scale Biosphere-Atmosphere in Amazon Program (LBA)”. Mosquito specimens were sampled during the months of July, September and December 2005 and February and April 2006. During this period,»26,910 specimens were captured using the 'human attractant' method. A total of 59 species in 15 genera were captured and the genera Culex and Coquiilettidia were the focus of this study. The results show a statistical analysis of the impacts of environmental variables on the population density of mosquitoes of the Culex and Coquillettidia genera, emphasizing their eco-physiological behavior. There is a clear positive association between the concentration of atmospheric CO2 and the population density of these genera. When the rainy and dry seasons are analyzed separately, by the daytime period, the positive association is more evident.