Monitoring the susceptibility of Triatoma sordida Stål, 1859 (Hemiptera: Reduviidae) to deltamethrin insecticide, in Central-Western Brazil

Revista da Sociedade Brasileira de Medicina Tropical

Secretaria de Estado da Saúde de Goiás¹  Santalucia, Marcelo¹  Universidade de Brasília, Brasília¹  Barata, José Maria Soares¹  Rosa, João Aristeu da¹  Almeida, Paulo Silva de¹  Secretaria de Estado de Saúde, Dourados¹  Gonçalves, Rodrigo Gurgel¹  Santos, Janduhy Pereira dos¹  Ministério da Saúde, Brasília¹  Núcleo de Geoprocessamento, Brasília¹  Otrera, Vanessa Camargo Garbeloto¹  Superintendência de Controle de Endemias, Marília¹  Obara, Marcos Takashi¹  Universidade Estadual Paulista, Araraquara¹  Universidade de São Paulo, São Paulo¹ 

关键词: Triatominae;    Resistance;    Insecticide;    Deltamethrin;    Triatoma sordida;   

DOI  :  10.1590/S0037-86822011005000004

学科分类：农业科学（综合）

来源: Sociedade Brasileira de Medicina Tropical

【 摘 要 】

INTRODUCTION: Triatoma sordida Stål, 1859 populations were investigated for susceptibility to deltamethrin.METHODS: This study aimed to analyze the resistance of 11 populations of insects from the States of Goiás, Mato Grosso and Mato Grosso do Sul by topical application bioassays.RESULTS: The estimated LD50 and RR50 showed high levels of susceptibility (LD50 < 1 and RR50 < 2). However, analysis of the slope of the dose response curve showed that the populations of insects in the towns of Firminópolis/GO, Posse/GO, Poxoréu/MT, Douradina/MS and Aparecida do Taboado/MS present great probability of evolving resistance and, thus, are more likely to tolerate treatment with deltamethrin.CONCLUSIONS: Small changes in susceptibility and low levels of resistance were detected, but the temporal changes of susceptibility should be continuously monitored to adequately guide the actions of vector-control of DC.

【 授权许可】

Unknown