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Mem. Inst. Oswaldo Cruz ; 104(4): 592-598, July 2009. ilus, tab, graf
Article Dans Anglais | LILACS | ID: lil-523725

Résumé

This study was conducted in a meteorological tower located in the Caxiuanã Forest (municipality of Melgaço, Pará, Brazil) with the aim of assessing the vertical stratification of species of Haemagogus and Sabethes, potential vectors of the yellow fever virus. To investigate the role of microclimates in mosquito stratification, bimonthly collections were conducted at ground level (0 m), 8 m, 16 m and 30 m (canopy level), with the aid of entomological nets and suction tubes, from July 2005-April 2006. A total of 25,498 mosquitoes were collected; specimens of Sabethes sp. and Haemagogus janthinomyswere found mostly at heights of 16 m and 30 m while Hg. leucocelaenus was most frequently observed at ground level. The largest number of vector species was collected during the rainiest months, but this difference between seasons was not statistically significant. However, the number of Hg. janthinomys was positively correlated with variations in temperature and relative humidity.


Sujets)
Animaux , Climat , Culicidae/physiologie , Vecteurs insectes/physiologie , Brésil , Culicidae/classification , Vecteurs insectes/classification , Densité de population , Dynamique des populations , Saisons , Fièvre jaune/transmission
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