Monitoring of Lutzomyia longipalpis LutzNeiva, 1912 in an area of intense transmission of visceral leishmaniasis in Rio Grande do Norte, Northeast Brazil
| Autor: | Sthenia Santos Albano Amóra, Nilza Dutra Alves, Edmilson de Castro Dias, Iara Tersia Freitas Macedo, Claudia Maria Leal Bevilaqua, Paula Gabriela Melo de Oliveira, Lorena Mayana Beserra de Oliveira, Gislayne Christianne Xavier Peixoto, Francisco Marlon Carneiro Feijó |
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| Rok vydání: | 2009 |
| Předmět: |
Wet season
Male Veterinary medicine Prevalence Biology Population density law.invention law medicine Animals General Veterinary business.industry Pest control Seasonality medicine.disease Transmission (mechanics) Visceral leishmaniasis Vector (epidemiology) Population Surveillance Leishmaniasis Visceral Parasitology Female Seasons Psychodidae business Brazil |
| Zdroj: | Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria. 19(1) |
| ISSN: | 0103-846X |
| Popis: | Urban increase of visceral leishmaniasis (VL) in Brazil is associated with the adaptation of its vector, Lutzomyia longipalpis, to environments modified by humans. The present study reports the results of an entomological monitoring of L. longipalpis and the effect of environmental variables on its population density. Sandflies were captured in the municipality of Mossoró, State of Rio Grande do Norte, Northeastern Brazil, from January 2005 to December 2006. Two CDC light traps were placed monthly for four consecutive nights in the peridomicile of selected households. Data analysis was based on the chi-square test and linear regression. A total of 2,087 sandflies were captured, 99.86% of which were L. longipalpis. A higher proportion of females were captured (p < 0.05). Monthly analysis of the variables temperature, relative humidity and rainfall did not show a significant influence on population density. However, there were seasonal differences: approximately 70% of sand flies were captured during the rainy season (p < 0.05). The predominant species, L. longipalpis, is present in substantial number, representing a public health risk. Therefore, because of higher prevalence during the rainy season, we recommend intensified VL control measures before and during this season to reduce the risk of disease transmission. |
| Databáze: | OpenAIRE |
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