数字农科院2.0

The green lacewing Chrysopa formosa as a potential biocontrol agent for managing Spodoptera frugiperda and Spodoptera litura

文献类型： 外文期刊

作者： Li, Yu-Yan;Wang, Ya-Nan;Zhang, Hong-Zhi;Zhang, Mao-Sen;Wang, Meng-Qing;Mao, Jian-Jun;Zhang, Li-Sheng

作者机构：

关键词： Chrysopa formosa;functional response;predation efficiency;prey preference;Spodoptera

期刊名称： BULLETIN OF ENTOMOLOGICAL RESEARCH

ISSN： 0007-4853

年卷期： 2022 年

页码：

收录情况： SCIE（2022版）

摘要： Understanding predator-prey interactions is essential for successful pest management by using predators, especially for the suppression of novel invasive pest. The green lacewing Chrysopa formosa 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 Spodoptera frugiperda and native Spodoptera litura is limited. Here we evaluated the predation efficiency of C. formosa adults on eggs and first- to third-instar larvae of S. frugiperda and S. litura through functional response experiments and determined the consumption capacity and prey preference of this chrysopid. Adults of C. formosa 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 C. formosa feeding on Spodoptera eggs, followed by the first-instar larvae. C. formosa exhibited a significant preference for S. litura over S. frugiperda 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 C. formosa. These results indicate that C. formosa has potential as an agent for biological control of noctuid pests, particularly for the newly invasive pest S. frugiperda in China.

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