Distribution and infection of triatomines (Hemiptera: Reduviidae) by Trypanosoma cruzi in the state of Michoacán, Mexico

Memórias do Instituto Oswaldo Cruz

José Alejandro Martínez-ibarra²  Ignacio Valencia-navarro¹  Salvador León-saucedo¹  Gabriela Ibáñez-cervantes¹  Rafael Bustos-saldaña²  Oziel Dante Montañez-valdez²  Óscar Iván Cervantes Díaz²  Benjamín Nogueda-torres¹ 

[1] ,Universidad de Guadalajara Centro Universitario del Sur Jalisco,México

关键词: Triatominae;    Chagas disease;    Michoacán;    Mexico;   

DOI  :  10.1590/S0074-02762011000400010

来源: SciELO

【 摘 要 】

An entomological study of triatomine species was carried out to assess their prevalence in 10 localities of the state of Michoacán, Mexico. Entomological indices were calculated to estimate the risk for vector-borne transmission of Trypanosoma cruzi to the human population in this area. Four triatomine species (Triatoma barberi, Triatoma dimidiata, Meccus pallidipennis and Meccus longipennis) were collected from the study area. This is the first report of M. longipennis and T. dimidiata in Michoacán. M. pallidipennis was significantly (p < 0.05) more abundant than any of the other species collected in the study area. Infection indices were greater than 50% for each of the four collected triatomine species. Significantly more triatomines were collected from intradomiciliary areas than from peridomiciliary or sylvatic areas. Infestation, crowding and density indices were low, whereas colonisation indices were high in five localities. The current vectorial conditions in the study area require continuous entomological and serological surveillance to diminish the risk of T. cruzi transmission to human populations.

【 授权许可】

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