Spatial dynamics of urban populations of Lutzomyia longipalpis (Diptera: Psychodidae) in Caxias, State of Maranhão, Brazil

Revista da Sociedade Brasileira de Medicina Tropical

Maria Do Desterro Soares Brandao Nascimento¹  Maria Helena Silva¹  Graca Maria De Castro Viana¹  Francisco Santos Leonardo¹  Geusa Felipa De Barros Bezerra¹  Antonia Suely Guimaraes E Silva¹  Valeria Cristina Pinheiro Soares¹  Silma Regina Ferreira Pereira¹  Jose Manuel Macario Rebelo¹  Reginaldo Pecanha Brazil¹ 

关键词: Lutzomyia longipalpis;    Distribution;    Natural infection;    Urban areas;    Maranhao;   

DOI  :  10.1590/0037-8682-0150-2013

来源: SciELO

【 摘 要 】

Introduction In this paper, we report the ecology of Lutzomyia longipalpis in Caxias City, located in the eastern part of State of Maranhão, Brazil and highlight its seasonal and geographical distribution by environment. In addition, we discuss natural Leishmania infection and its relationship with visceral leishmaniasis. Methods Between September 2007 and August 2009, the collection of sandflies was performed using Center for Disease Control (CDC) light traps from 15 houses in 5 selected neighborhoods. ResultsLutzomyia longipalpis was present in all zones of the city. We also found that Lu. longipalpis was regularly detected both inside and around the house, predominantly in outdoor areas. In urban areas, Lu. longipalpis was present in both the dry and rainy seasons, with a higher density present in the latter. One female specimen of Lu. longipalpis was observed to have natural Leishmania infection. Conclusions The presence of Lu. longipalpis was observed throughout the year during 2 seasonal periods, with a predominance in the rainy season. A low rate of natural Leishmania infection was observed in urban areas during the rainy season.

【 授权许可】

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