The fungus Beauveria bassiana reduces Aedes aegypti longevity in laboratory conditions, but effects on survival, blood-feeding behavior, and fecundity in realistic environmental conditions have not been tested. Adult, female Ae. aegypti infected with B. bassiana (FI-277) were monitored for blood-feeding success and fecundity in the laboratory. Fungal infection reduced mosquito-human contact by 30%. Fecundity was reduced by (mean ± SD) 29.3 ± 8.6 eggs per female per lifetime in the laboratory; egg batch size and viability were unaffected. Mosquito survival, blood-feeding behavior, and fecundity were also tested in 5 meter × 7 meter × 4 meter semi-field cages in northern Queensland, Australia. Fungal infection reduced mosquito survival in semi-field conditions by 59-95% in large cages compared with 61-69% in small cages. One semi-field cage trial demonstrated 80% reduction in blood-feeding; a second trial showed no significant effect. Infection did not affect fecundity in large cages. Beauveria bassiana can kill and may reduce biting of Ae. aegypti in semi-field conditions and in the laboratory. These results further support the use of B. bassiana as a potential biocontrol agent against Ae. aegypti.

译文

:球孢白僵菌在实验室条件下会降低埃及伊蚊的寿命,但尚未测试其在现实环境条件下对存活,采血行为和繁殖力的影响。成年雌性Ae。在实验室中监测了感染了球孢杆菌的埃及埃及人(FI-277)的补血成功和繁殖力。真菌感染使蚊虫与人的接触减少了30%。在实验室中,每位女性每生一生的产卵量减少(平均值±标准差)29.3±8.6个卵;鸡蛋的批量大小和生存力不受影响。在澳大利亚昆士兰州北部的5米×7米×4米的半田式笼子中,还测试了蚊子的存活率,摄食行为和繁殖力。大型笼中的真菌感染使半田野条件下的蚊子存活率降低了59-95%,相比之下,小型笼中的蚊子存活率降低了61-69%。一项半场笼试验表明,采血量减少了80%。第二项试验显示无明显效果。感染并没有影响大笼子里的繁殖力。球孢白僵菌可杀死并减少对Ae的咬伤。埃及在半田野条件下和实验室中。这些结果进一步支持了球芽孢杆菌作为潜在的针对Ae的生物防治剂的用途。埃及

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