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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 109, No. 7, 2014, pp. 899-904
Bioline Code: oc14132
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 109, No. 7, 2014, pp. 899-904

 en Phlebotomine fauna, natural infection rate and feeding habits of Lutzomyia cruzi check for this species in other resources in Jaciara, state of Mato Grosso, Brazil
de Brito, Veruska Nogueira; de Almeida, Arleana do Bom Parto Ferreira; Nakazato, Luciano; Duarte, Rosemere; de Oliveira Souza, Cladson & Sousa, Valéria Régia Franco

Abstract

Visceral leishmaniasis (VL) in Brazil is transmitted by the phlebotomine Lutzomyia longipalpis check for this species in other resources and in some midwestern regions by Lutzomyia cruzi check for this species in other resources . Studies of the phlebotomine fauna, feeding habits and natural infection rate by Leishmania check for this species in other resources contribute to increased understanding of the epidemiological chain of leishmaniases and their vectorial capacity. Collections were performed in Jaciara, state of Mato Grosso from 2010-2013, during which time 2,011 phlebotomines (23 species) were captured (68.70% Lu. cruzi and 20.52% Lutzomyia whitmani check for this species in other resources ). Lu. cruzi females were identified by observing the shapes of the cibarium (a portion of the mouthpart) and spermatheca, from which samples were obtained for polymerase chain reaction to determine the rates of natural infection. Engorged phlebotomines were assessed to identify the blood-meal host by ELISA. A moderate correlation was discovered between the number of Lu. cruzi and the temperature and the minimum rate of infection was 6.10%. Twenty-two females were reactive to the antisera of bird (28%), dog (3.30%) and skunk (1.60%). We conclude that Lu. cruzi and Lu. whitmani have adapted to the urban environment in this region and that Lu. cruzi is the most likely vector of VL in Jaciara. Moreover, maintenance of Leishmania in the environment is likely aided by the presence of birds and domestic and synanthropic animals.

Keywords
visceral leishmaniasis; Lutzomyia sp.; PCR; ELISA

 
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