Fonte alimentar e potencial vetorial de Triatoma vitticeps (Stal, 1859) com relação à doença de Chagas humana no estado do Espírito Santo, Brasil (Hemiptera, Reduviidae) / Feeding and vectorial capacity of Triatoma vitticeps (Stal, 1859) in relation with human chagas' disease in Espírito Santo State, Brazil
Mem. Inst. Oswaldo Cruz
; 84(supl.4): 165-173, 1989. tab
Article
em Pt
| LILACS
| ID: lil-623864
Biblioteca responsável:
BR1.1
ABSTRACT
In paralel with several other epidemiologic and entomologic data of 19 Municipalities of Espírito Santo State, Brazil, the feeding pattern of 222 Triatoma vitticeps is studied through precipitin tests. Very high levels of natural infection with Trypanosoma cruzi are observed in adult insects, in contrast with the abscence or minimum degrees of infection among nymphs and human individuals. The precipitin tests showed the contact of the insects with multiple blood sources, chiefly human and birds, followed by rodents and marsupials. The data suggest that T. vitticeps in spite of being highly antropophilic, become infected by T. cruzi in sylvatic ambient and occasionally invade houses. The species doesn't seem to be - at least until now - a good vector in the domestic cycle of Chagas' disease. Several factors seem to be involved in this conclusion, mainly the low density of the insect in the houses, its hardness to coloniza them, its slowness concerning to suction and defecation and possibly its low susceptibility to different T. cruzi strains.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Triatoma
/
Cardiomiopatia Chagásica
/
Doença de Chagas
Limite:
Animals
/
Humans
País/Região como assunto:
America do sul
/
Brasil
Idioma:
Pt
Revista:
Mem. Inst. Oswaldo Cruz
Assunto da revista:
MEDICINA TROPICAL
/
PARASITOLOGIA
Ano de publicação:
1989
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil