Man biting rate seasonal variation of malaria vectors in Roraima, Brazil

Memórias do Instituto Oswaldo Cruz

Fábio Saito Monteiro De Barros²  Nildimar Alves Honório¹ 

[1] ,Universidade Federal de Pernambuco Departamento de Zoologia Recife PE ,Brasil

关键词: Anopheles darlingi;    Anopheles albitarsis;    seasonal;    distribution;    malaria;    Brazil;   

DOI  :  10.1590/S0074-02762007005000024

来源: SciELO

【 摘 要 】

Malaria control has been directed towards regional actions where more detailed knowledge of local determinants of transmission is of primary importance. This is a short report on range distribution and biting indices for Anopheles darlingi and An. albitarsis during the dry and rainy season that follows river level variation in a savanna/alluvial forest malaria system area in the Northern Amazon Basin. Distribution range and adult biting indices were at their highest during the rainy season for both An. darlingi and An. albitarsis. During the rainy season the neighboring alluvial forest was extensively flooded. This coincided with highest rates in malaria transmission with case clustering near the river. As the river receded, anopheline distribution range and density decreased. This decrease in distribution and density corresponded to a malaria decrease in the near area. An exponential regression function was derived to permit estimations of An. darlingi distribution over specified distances. Anopheline spatio-temporal variations lead to uneven malaria case distribution and are of important implications for control strategies.

【 授权许可】

CC BY   
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