ABSTRACT
Introduction The influx and efflux of military personnel in the possible endemic areas of leishmaniasis provided the impetus for research on the sandflies on Marambaia Island. Methods Sandflies were collected with light traps installed in the 3 ecotypes of 3 areas chosen for their particular landscape aspects. Results In 2009, were collected 32,006 specimens of sandflies belonging to 13 species. The species that showed highest density were Nyssomyia intermedia and Migoneimyia migonei. Conclusions N. intermedia and M. migonei are the principal vectors of American tegumentary leishmaniasis (ATL) in Brazil; thus, extension studies related to the eco-epidemiology of these species of Marambaia Island are essential. .
Subject(s)
Animals , Female , Male , Insect Vectors/classification , Leishmaniasis, Cutaneous/transmission , Psychodidae/classification , Brazil , SeasonsABSTRACT
A leishmaniose tegumentar americana é causada por protozoários do gênero Leishmania, que acomete a pele e mucosa; é primariamente uma infecção zoonótica. Inquéritos flebotomínicos foram realizados em quatro áreas com ocorrência de casos humanos de leishmaniose tegumentar americana do município de Seropédica. Utilizou-se a metodologia de coleta com capturas manuais no horário das 18 às 22h, durante 12 meses consecutivos. No período de outubro de 2004 e setembro de 2005, capturamos 2.390 exemplares pertencentes a quatro espécies, Lutzomyia intermedia com 97,1 por cento do total coletado, seguida pela Lutzomyia whitmani 1,6 por cento, Lutzomyia migonei 1,2 por cento e Lutzomyia oswaldoi 0,1 por cento. O Valão da Louça apresentou maior densidade flebotomínica, seguida pelas localidades de Km 39, Km 40 e Caçador. A baixa diversidade de espécie se deve a alterações significativas do ecótopo da região. Sugere-se que a transmissão da leishmaniose tegumentar americana no município de Seropédica esteja sendo veiculada pela Lutzomyia intermedia.
American cutaneous leishmaniasis is caused by protozoa of the genus Leishmania, which affects the skin and mucosa. It is primarily a zoonotic infection. Sandfly surveys were conducted in four areas with occurrences of human cases of American cutaneous leishmaniasis in the municipality of Seropédica. A manual method was used to catch specimens between 6:00 pm and 10:00 pm, for 12 consecutive months. From October 2004 to September 2005, we caught 2,390 individuals belonging to four species: Lutzomyia intermedia accounted for 97.1 percent of the total collected, followed by Lutzomyia whitmani (1.6 percent), Lutzomyia migonei (1.2 percent) and Lutzomyia oswaldoi (0.1 percent). The Valão das Louças had the highest density of sandflies, followed by the localities of Km 39, Km 40 and Caçador. The low diversity of species is due to significant changes in the ecotope of the region. It is suggested that American cutaneous leishmaniasis is being transmitted by Lutzomyia intermedia in the municipality of Seropédica.