Effects of periodic heat events on the reproduction and longevity of female and male Agasicles hygrophila (Coleoptera: Chrysomelidae)

文献类型： 外文期刊

第一作者： Jin, Jisu

作者： Jin, Jisu;Zhao, Meiting;Lv, Chen;Wan, Fanghao;Guo, Jianying;Jin, Jisu;Zhao, Meiting;Zhao, Meiting;Wan, Fanghao

作者机构：

关键词： Agasicles hygrophila; Alternanthera philoxeroides; periodic heat event; survival; fecundity

期刊名称：ENVIRONMENTAL ENTOMOLOGY （ 影响因子：1.7； 五年影响因子：1.9 ）

ISSN： 0046-225X

年卷期： 2024 年 53 卷 3 期

页码：

收录情况： SCI

摘要： Alternanthera philoxeroides (Amaranthaceae), commonly known as alligator weed, is a globally invasive and detrimental perennial weed. Agasicles hygrophila serves as an important biocontrol agent for alligator weeds. However, during mid-summer, when temperatures increase, A. hygrophila populations experience a significant decline, leading to ineffective weed control. This study has examined the impact of periodic heat events on the reproduction and survival of A. hygrophila females and males using various mating combinations and durations of temperature treatments. The results demonstrated significant effects on all of the studied parameters across mating combinations when compared with the control. Under the same temperature combination, the fecundity and survival rates of females, as well as the egg-hatching rate, decreased significantly with increasing repeated heat exposure. Furthermore, the egg-hatching rate varied significantly among different temperatures and time-interval combinations. In addition, the females displayed greater sensitivity to heat stress than males in terms of fecundity. These findings enhance our understanding of A. hygrophila population dynamics during summer and provide insights into the release of biocontrol agents in diverse regions with varying climates.

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