Efeitos do desmatamento e da densidade populacional humana na abundância e diversidade de culicídeos (Diptera: Culicidae) no Assentamento rural de Rio Pardo, Presidente Figueiredo, Amazonas.

Abstract

Mosquitoes ( Diptera : Culicidae ) , distributed throughout the tropical zone and part of the temperate zones , constitute a serious problem due to its role as vectors of various etiologic agents causing diseases to humans and animals , as well as great complexity in your control. And this study aims to identify the Culicidae fauna in a rural community in central Amazonia and their associations between human population density and deforestation , by checking the abundance and diversity in relation to the strata and collections environments. Collections were made with CDC light traps for six months between 2009-2010 to posteriore were made analysis on the Free Software R. were captured 3,113 specimens, the most abundant genera Culex species distributed with three eight mofótipos representing 2,408 individuals (79.8 % of total); Psorophora five species and 196 individuals (6.5% of total); in the farm environment (443 individuals) in DA_DA stratum; the second room with the largest number of mosquitoes caught was the forest (411 individuals) in DB_DB stratum.The diversity of species in each type of landscape showed that the stratum / environment collection with the highest diversity was DB_DBforest with (H '= 2.71), followed by DB_DAfarm (H' = 2.50) while the lowest rate was observed in stratum / DB_DAedge collection environment (H '= 1.64) and DA_DBedge (H' = 1.71). The results of this study showed that both deforestation, as human population density cause influence on the diversity and abundance of mosquitoes, and these effects may be higher in these populations when these two factors are associated. While deforestation can lead to a rapid increase in the number of specimens followed by a reduction in that number in human population density can produce favorable locations for maintenance cycle of several species of mosquitoes more adaptable.