Ren Peng, Di Xue-Yuan, Yan Bin, Shen Xiu-Xian, Tian Shuang, Yang Mao-Fa, Wu Hui-Zi
Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology Guizhou University Guiyang Guizhou China.
College of Tobacco Science Guizhou University Guiyang Guizhou China.
Ecol Evol. 2025 Jun 18;15(6):e71626. doi: 10.1002/ece3.71626. eCollection 2025 Jun.
With global warming and an increase in the frequency of extreme heat events, uncertainty has arisen about the survival and fertility of insects that are enemies in the wild. In this study, we employed the generalized linear model (GLMs) for analysis to elucidate the effects of short-term high temperatures on the survival, fecundity, and progeny of Ashmead (Hymenoptera: Braconidae), a key parasitic natural enemy of early instar larvae of Fabricius (Lepidoptera: Noctuidae). We conducted laboratory tests to assess the survival and lifespan of adults at high temperatures of 35°C, 37°C, and 39°C, with exposure durations of 1, 3, 5, 7, and 9 h. We also evaluated the fecundity and longevity of the F generation adults, as well as the development of the F generation, following exposure at the same high temperatures for 5 h. The results indicated that adult stages were significantly affected by elevated temperatures across different exposure durations, particularly when the duration exceeded 5 h. Under different high-temperature exposures for 5 h, fecundity and longevity were significantly suppressed in the F generation, along with impaired growth and development in the F generation when the temperature exceeded 39°C. This study reveals the effects of short-term high-temperature stress on the survival, reproduction, and progeny development of . It provides a theoretical basis for understanding the biological evolution mechanism of in response to thermal stress and the biological control of pests by in high-temperature seasons.
随着全球变暖以及极端高温事件频率的增加，野生环境中作为天敌的昆虫的生存和繁殖能力出现了不确定性。在本研究中，我们采用广义线性模型（GLMs）进行分析，以阐明短期高温对棉铃虫齿唇姬蜂（膜翅目：茧蜂科）的生存、繁殖力和子代的影响，棉铃虫齿唇姬蜂是棉铃虫（鳞翅目：夜蛾科）初龄幼虫的一种关键寄生性天敌。我们进行了实验室测试，以评估在35°C、37°C和39°C的高温下，暴露1、3、5、7和9小时后成虫的存活率和寿命。我们还评估了F代成虫在相同高温下暴露5小时后的繁殖力和寿命，以及F代的发育情况。结果表明，在不同暴露时长下，成虫阶段受到高温的显著影响，尤其是当暴露时长超过5小时时。在不同高温下暴露5小时后，F代的繁殖力和寿命受到显著抑制，当温度超过39°C时，F代的生长和发育也受到损害。本研究揭示了短期高温胁迫对棉铃虫齿唇姬蜂的生存、繁殖和子代发育的影响。它为理解棉铃虫齿唇姬蜂应对热胁迫的生物进化机制以及在高温季节利用棉铃虫齿唇姬蜂进行害虫生物防治提供了理论依据。
