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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 96, No. 3, 2001, pp. 281-283
Bioline Code: oc01041
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 96, No. 3, 2001, pp. 281-283

 en Effect of a Second Bloodmeal on the Oesophagus Colonization by Leishmania mexicana Complex in Lutzomyia evansi (Diptera: Psychodidae)
Celso Luíz Cardoso; Luiz Roberto Bigão Giacomelli; César Helbel; Janete Jordão Sant'Ana; Fátima Moreira Martins & Angela Maria Werneck Barreto


Migration and colonization of the oesophagus by Leishmania mexicana parasites were enhanced after digestion of a second bloodmeal intake in Lutzomyia evansi. This event has epidemiological significance since it affects the infection susceptibility of this sand fly species, which is a proven vector of L. chagasi in Colombian and Venezuelan visceral leishmaniasis foci. Also, it may explain the host seeking behaviour displayed by some partially bloodfed flies found inside houses.

leishmaniasis, parasite development, refeeding, sand flies, Lutzomyia evansi

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