Li Yu-Yan, Wang Ya-Nan, Zhang Hong-Zhi, Zhang Mao-Sen, Wang Meng-Qing, Mao Jian-Jun, Zhang Li-Sheng
Key Laboratory of Natural Enemy Insects, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China.
Bull Entomol Res. 2023 Feb;113(1):49-62. doi: 10.1017/S000748532200030X. Epub 2022 Jul 29.
Understanding predator-prey interactions is essential for successful pest management by using predators, especially for the suppression of novel invasive pest. The green lacewing is a promising polyphagous predator that is widely used in the biocontrol of various pests in China, but information on the control efficiency of this predator against the seriously invasive pest and native is limited. Here we evaluated the predation efficiency of . adults on eggs and first- to third-instar larvae of . and . through functional response experiments and determined the consumption capacity and prey preference of this chrysopid. Adults of . had a high consumption of eggs and earlier instar larvae of both prey species, and displayed a type II functional response on all prey stages. Attack rates of the chrysopid on different prey stages were statistically similar, but the handling time increased notably as the prey developed. The highest predation efficiency and shortest-handling time were observed for . feeding on eggs, followed by the first-instar larvae. . exhibited a significant preference for . over . in a two-prey system. In addition, we summarized the functional response and predation efficiency of several chrysopids against noctuid pests and made a comparison with the results obtained from . . These results indicate that . has potential as an agent for biological control of noctuid pests, particularly for the newly invasive pest . in China.
了解捕食者与猎物之间的相互作用对于利用捕食者成功进行害虫防治至关重要，特别是对于抑制新型入侵害虫而言。草蛉是一种很有前景的多食性捕食者，在中国被广泛用于多种害虫的生物防治，但关于这种捕食者对严重入侵害虫和本地害虫的控制效率的信息有限。在此，我们通过功能反应实验评估了草蛉成虫对两种害虫的卵以及一至三龄幼虫的捕食效率，并确定了这种草蛉的捕食能力和猎物偏好。草蛉成虫对两种猎物的卵和低龄幼虫的捕食量都很高，并且在所有猎物阶段均表现出II型功能反应。草蛉对不同猎物阶段的攻击率在统计学上相似，但随着猎物发育，处理时间显著增加。草蛉取食某种害虫的卵时捕食效率最高且处理时间最短，其次是取食一龄幼虫时。在双猎物系统中，草蛉对某种害虫表现出明显的偏好。此外，我们总结了几种草蛉对夜蛾科害虫的功能反应和捕食效率，并与从另一种草蛉获得的结果进行了比较。这些结果表明，草蛉有潜力作为夜蛾科害虫生物防治的媒介，特别是对中国新入侵的某种害虫。
