绿僵菌
埃及伊蚊
生物
昆虫病原真菌
分生孢子
昆虫病原真菌
绿僵菌
真菌
载体(分子生物学)
灭蚊
生物病虫害防治
毒理
微生物学
植物
球孢白僵菌
幼虫
疟疾
免疫学
生物化学
基因
重组DNA
作者
Nasir Mehmood,Ali Hassan,Wei Zhou,Hafiz Muhammad Usman,Hui Ai,Qiuying Huang
摘要
Due to the rapid rise in arboviral disease cases, there is a need for alternative methods of vector control since fast growing insecticides resistance is a matter of great concern. Recent studies have shown the potential of entomopathogenic fungi in controlling mosquito vectors, but behavioural responses of the mosquitoes encountering with entomopathogenic fungi are still unclear.In this study, behavioural responses induced by the entomopathogenic fungus Metarhizium anisopliae (Metschnikoff) Sorokin in adult female Aedes aegypti mosquito were evaluated. The survival of female mosquitoes was significantly reduced after exposure to medium and high concentrations of fungal conidia. A significant increase in frequencies and durations of different self-grooming types was observed in mosquitoes exposed to medium or high concentrations of fungal conidia. Mosquitoes were able to differentiate between active and inactive fungal conidia as application of inactive conidia showed non-significant effect on survival and self-grooming parameters. A concentration-specific reduction in flight locomotor activity of the female mosquitoes was found after fungal treatments. Fungal-exposed mosquitoes showed significantly higher antifungal activity 72 h post-application.These findings provide greater understanding of behavioural responses of the mosquitoes to resist fungal infections and suggest that mosquitoes can remove the lower amounts of fungal conidia through self-grooming behaviour, which they encounter within natural field conditions.
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