Testing fungus impregnated cloths for the control of adult Aedes aegypti under natural conditions.
Parasit Vectors
; 6(1): 256, 2013 Sep 08.
Article
em En
| MEDLINE
| ID: mdl-24010874
ABSTRACT
BACKGROUND:
Entomopathogenic fungi could be useful tools for reducing populations of the dengue mosquito Aedes aegypti. Here the efficiency of fungus (Metarhizium anisopliae) impregnated cloths (with and without imidacloprid [IMI]) was evaluated against adult A. aegypti in simulated human dwellings. Behaviour of mosquitoes in the presence of black cloths was also investigated.FINDINGS:
When mosquitoes were released into the test rooms, the lowest survival rates (38%) were seen when five black cloths impregnated with conidia of ESALQ 818 + 10 ppm IMI were fixed under tables and chairs. This result was significantly lower than the survival rate recorded when cloths were impregnated with ESALQ 818 alone (44%) or ESALQ 818 + 0.1 ppm IMI (43%). Blood fed A. aegypti had lower landing frequencies on black cloths than sucrose fed insects during the first 24 h following feeding, which may have been due to reduced flight activity. Few mosquitoes (4-5%) were observed to land on the cloths during the hours of darkness. The landing pattern of sucrose-fed mosquitoes on non-treated and fungus-treated cloths was similar.CONCLUSION:
The synergism between M. anisopliae and IMI significantly reduced Aedes survival in simulated field conditions. The use of fungus impregnated cloths is a promising point source application method for the control of adult A. aegypti.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Controle Biológico de Vetores
/
Controle de Mosquitos
/
Aedes
/
Metarhizium
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article