Alomar Abdullah A
Infectious Disease Vector Research Laboratory, Department of Plant Protection, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia.
Insects. 2025 Apr 20;16(4):434. doi: 10.3390/insects16040434.
is a promising mosquito vector biocontrol agent due to its potent larvicidal properties. This study investigated the lethal and sublethal effects of exposure to crude toxin of strain WHk23 on . Toxicity bioassays showed a median lethal concentration of 28.30 µg/mL for third instar larvae. In addition to direct larval mortality, sublethal exposures resulted in concentration-dependent decreases in survival, fecundity, and fertility. Exposure to different concentrations was found to accelerate larval development, resulting in larger females, yet those females exhibited lower lifespan and diminished reproductive success. These results suggest that exposure to not only reduces mosquito populations but also has lasting effects on important life history parameters, ultimately lowering vectorial capacity and disease transmission risk. This study provides valuable insights into the lethal and sublethal consequences of exposure. Given its potent larvicidal properties, represents a promising biocontrol agent for mosquito vectors.
由于其强大的杀幼虫特性，它是一种很有前景的蚊虫媒介生物防治剂。本研究调查了暴露于WHk23菌株粗毒素对[具体对象未给出]的致死和亚致死效应。毒性生物测定显示，三龄幼虫的半数致死浓度为28.30 µg/mL。除了直接导致幼虫死亡外，亚致死暴露还导致存活率、繁殖力和生育力呈浓度依赖性下降。发现暴露于不同浓度会加速幼虫发育，产生体型更大的雌性，但这些雌性的寿命较短，繁殖成功率降低。这些结果表明，暴露于[具体对象未给出]不仅会减少蚊虫数量，还会对重要的生活史参数产生持久影响，最终降低传病能力和疾病传播风险。本研究为暴露于[具体对象未给出]的致死和亚致死后果提供了有价值的见解。鉴于其强大的杀幼虫特性，[具体对象未给出]是一种很有前景的蚊虫媒介生物防治剂。
