SciELO - Scientific Electronic Library Online

 
vol.33 número6Plasmodium vinckei petteri: some aspects of its sporogony and exoerythrocytic schizogonyIsolamento do Toxoplasma gondii de exsudato peritoneal e órgãos de camundongos com infecção experimental índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Revista do Instituto de Medicina Tropical de São Paulo

versão On-line ISSN 1678-9946

Resumo

LIMA, Marli Maria; REY, Luis  e  MELLO, Rubens Pinto de. Lethality of triatomines (Hemiptera: Reduviiae), vectors of Chagas' disease, feeding on blood baits containing synthetic insecticides, under laboratory conditions . Rev. Inst. Med. trop. S. Paulo [online]. 1991, vol.33, n.6, pp.427-433. ISSN 1678-9946.  https://doi.org/10.1590/S0036-46651991000600002.

A laboratory study was conducted to test the toxicity of synthetic insecticides added to defibrinated sheep blood kept at room temperature and offered as food to the following triatomine species: Triatoma infestans, Panstrongylus megistus, Triatoma vitticeps, Triatoma pseudomaculata, Triatoma brasiliensis and Rhodnius prolixus. The insecticides used, at a concentration of 1g/l, were: HCH, DDT, Malathion and Trichlorfon, and the lethalithy observed at the end of a 7-day period varied according to the active principle of each. HCH was the most effective by the oral route, killing 100% of the insects, except P. megistus (95.7%) and T. pseudomaculata (94.1%). Trichlorfon killed the insects at rates ranging from 71.8% (T. vitticeps) to 98% (R. prolixus). Malathion was slightly less efficient, killing the insects at rates from 56.8% (T. vitticeps) to 97% (T.brasiliensis). DDT was the least effective, with a killing rate of 10% (T. vitticeps) to 75% (T.brasiliensis). Since the tests were performed at room temperature, we suggest that baits of this type should be tried for the control of triatomines in the field.

Palavras-chave : Trypanosomiasis; Triatomines; Vector control; Blood feeding; Insecticides; Lethality rate.

        · resumo em Português     · texto em Inglês     · Inglês ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons