Potential for entomopathogenic fungi to control Triatoma dimidiata (Hemiptera: Reduviidae), a vector of Chagas disease in Mexico
Rev. Soc. Bras. Med. Trop
;
47(6): 716-722, Nov-Dec/2014. graf
Artigo
em Inglês
| LILACS
| ID: lil-732980
ABSTRACT
Introduction The use of entomopathogenic fungi to control disease vectors has become relevant because traditional chemical control methods have caused damage to the environment and led to the development of resistance among vectors. Thus, this study assessed the pathogenicity of entomopathogenic fungi in Triatoma dimidiata. Methods Preparations of 108 conidia/ml of Gliocladium virens, Talaromyces flavus, Beauveria bassiana and Metarhizium anisopliae were applied topically on T. dimidiata nymphs and adults. Controls were treated with the 0.0001% Tween-80 vehicle. Mortality was evaluated and recorded daily for 30 days. The concentration required to kill 50% of T. dimidiata (LC50) was then calculated for the most pathogenic isolate. Results Pathogenicity in adults was similar among B. bassiana, G. virens and T. flavus (p>0.05) and differed from that in triatomine nymphs (p=0.009). The most entomopathogenic strains in adult triatomines were B. bassiana and G. virens, which both caused 100% mortality. In nymphs, the most entomopathogenic strain was B. bassiana, followed by G. virens. The native strain with the highest pathogenicity was G. virens, for which the LC50 for T. dimidiata nymphs was 1.98 x108 conidia/ml ...
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Triatoma
/
Controle Biológico de Vetores
/
Fungos Mitospóricos
/
Insetos Vetores
Limite:
Animais
País/Região como assunto:
México
Idioma:
Inglês
Revista:
Rev. Soc. Bras. Med. Trop
Assunto da revista:
Medicina Tropical
Ano de publicação:
2014
Tipo de documento:
Artigo
País de afiliação:
México
Instituição/País de afiliação:
Instituto Nacional de Salud Pública/MX
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