Ecology of Lutzomyia longipalpis and Lutzomyia migonei in an endemic area for visceral leishmaniasis

The main vector for visceral leishmaniasis (VL) in Brazil is Lutzomyia longipalpis. However, the absence of L. longipalpis in a region of autochthonous VL demonstrates the participation of other species in the transmission of the parasite. Studies conducted in La Banda, Argentina, and São Vicente Fé...

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Published inRevista brasileira de parasitologia veterinaria Vol. 23; no. 3; pp. 320 - 327
Main Authors Silva, Rafaella Albuquerque, Santos, Fabricio Kassio Moura, Sousa, Lindemberg Caranha de, Rangel, Elizabeth Ferreira, Bevilaqua, Claudia Maria Leal
Format Journal Article
LanguageEnglish
Portuguese
Published Brazil Colégio Brasileiro de Parasitologia Veterinária 01.07.2014
Colégio Brasileiro de Parasitologia Veterinaria
Subjects
Animals
Brazil
Demography
Endemic Diseases
Female
Fortaleza
Insect Vectors
Leishmaniasis, Visceral - epidemiology
Lutzomyia longipalpis
Lutzomyia migonei
Male
PARASITOLOGY
Psychodidae
Urban Health
VETERINARY SCIENCES
visceral leishmaniasis
Lutzomyia migonei
leishmaniose visceral
Fortaleza
visceral leishmaniasis
Lutzomyia longipalpis
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Summary:The main vector for visceral leishmaniasis (VL) in Brazil is Lutzomyia longipalpis. However, the absence of L. longipalpis in a region of autochthonous VL demonstrates the participation of other species in the transmission of the parasite. Studies conducted in La Banda, Argentina, and São Vicente Férrer, Pernambuco State, Brazil, have correlated the absence of L. longipalpis and the presence of L. migonei with autochthonous cases of VL. In São Vicente Férrer, Pernambuco, there was evidence for the natural infection of L. migonei with Leishmania infantum chagasi. Thus, the objective of this work was to assess the ecology of the sand flies L. longipalpis and L. migonei in Fortaleza, an endemic area for VL. Insect capture was conducted at 22 sampling points distributed across four regions of Fortaleza. In total, 32,403 sand flies were captured; of these, 18,166 (56%) were identified as L. longipalpis and 14,237 (44%) as L. migonei. There were significant density differences found between the vectors at each sampling site (indoors and outdoors) (p <0.0001). These findings confirm that L. migonei and L. longipalpis are distributed throughout Fortaleza, where they have adapted to an indoor environment, and suggest that L. migonei may share the role as a vector with L. longipalpis in the transmission of VL in Fortaleza.
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ISSN:1984-2961
1984-2961
DOI:10.1590/S1984-29612014068