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OBSERVATIONS ON THE DOMESTIC ECOLOGY OF RHODNIUS ECUADORIENSIS (TRIATOMINAE)
Doença de Chagas
Ecologia
Controle
Equador
Alimentação
Affilliation
London School of Hygiene and Tropical Medicine. Department of Infectious and Tropical Diseases. Pathogen Molecular Biology and Biochemistry Unit. London, UK.
Unidad de Medicina Tropical, Instituto 'Juan César García', Quito, Ecuador / Instituto Nacional de Higiene y Medicina Tropical ‘Leopoldo Izquieta Pérez’. Quito, Ecuador.
Unidad de Medicina Tropical, Instituto 'Juan César García', Quito, Ecuador
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil / Institut de Recherche pour le Développement. UR016, France.
Unidad de Medicina Tropical, Instituto 'Juan César García', Quito, Ecuador / Instituto Nacional de Higiene y Medicina Tropical ‘Leopoldo Izquieta Pérez’. Quito, Ecuador.
Unidad de Medicina Tropical, Instituto 'Juan César García', Quito, Ecuador
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil / Institut de Recherche pour le Développement. UR016, France.
Abstract
Rhodnius ecuadoriensis infests peridomiciles and colonises houses in rural southern Ecuador. Six out of 84
dwellings (7%) surveyed in a rural village were infested (78 bugs/infested domicile; 279 bugs were collected in a
single dwelling). Precipitin tests revealed R. ecuadoriensis fed on birds (65%), rodents (31%), marsupials (8%),
and humans (15%) – mixed bloodmeals detected in 37.5% of individual samples. Trypanosoma cruzi from opossums
and rodents may thus be introduced into the domestic cycle. Wasp parasitoidism was detected in 6.5% of 995 R.ecuadoriensis eggs (only in peridomestic habitats). Control strategies should integrate insecticide spraying (indoors and peridomestic), better management of poultry, and housing improvements. A possible inefficacy of Malathion is reported.
Keywords in Portuguese
Rhodnius ecuadoriensisDoença de Chagas
Ecologia
Controle
Equador
Alimentação
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