Evaluación del efecto insecticida de tierra de diatomeas sobre Triatoma infestans (hemíptera, reduviidae)

Mariana L Bilbao; María Olga Mañá S; Fernando Murúa B.

doi:10.17843/rpmesp.2007.242.1101

Authors

Mariana L Bilbao Departamento de Entomología, Museo de Ciencias Naturales, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad de San Juan. San Juan, Argentina. Licenciada en Biología.
María Olga Mañá S Departamento de Entomología, Museo de Ciencias Naturales, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad de San Juan. San Juan, Argentina. Licenciada en Biología.
Fernando Murúa B. Departamento de Entomología, Museo de Ciencias Naturales, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad de San Juan. San Juan, Argentina. Biólogo

DOI:

https://doi.org/10.17843/rpmesp.2007.242.1101

Keywords:

Triatoma, Vectorial control, Chagas disease, Diatomaceous earth

Abstract

Triatoma infestans its principal vector of Chagas disease in Argentina. The diatomaceous earth (DE) is a natural product that is trading as insecticide and it to kill for deshidratation. To evaluate the insecticide efficacy of DE 60% from The Iglesiana mine (San Juan, Argentina) against nymphs from 5th instar and adults of T. infestans. Two doses 112,5 g/m2 (T1) and 225 g/m2 (T2) were evaluated. From each experimental and control treatments (Tc) four replicates randomized were made. Living and dead triatomines through five days were registered daily. No differences in the mortality (ANOVA, p >0,05) in adults (T1: 40%, T2: 25% y Tc: 30%) or nymphs from 5th instar (T1: 10%, T2: 15% y TC: 10%) were found. In conclusion, the diatomaceous earth from La Iglesiana mine had not insecticide capacity under the condition of present study.