Predatory Functional Response of Nesidiocoris tenuis to Bemisia tabaci, Myzus persicae, and Spodoptera frugiperda

doi:10.16409/j.cnki.2095-039x.2025.11.017

Abstract

Abstract: To clarify the pest control potential of Nesidiocoris tenuis as a natural enemy insect against agricultural pests, the predatory functional response and searching efficiency of its 5th instar nymphs, female adults, and male adults on Bemisia tabaci, Myzus persicae, and Spodoptera frugiperda were determined in artificial climate chambers in the laboratory. The results showed that the predatory functional responses of Nesidiocoris tenuis to the three prey species all conformed to the Holling Ⅱ model. Among them, the male adults had the highest instantaneous attack rate on B. tabaci nymphal pupa (1.494); the female adults had the shortest handling time on 1st-instar nymph of M. persicae (0.022 d) and the highest theoretical maximum daily predation amount (44.46 individuals). When the density of 1st-instar larva of S. frugiperda was 10 per dish, the female adults had the highest searching efficiency (1.039). With the increase of prey density, the predation amount of N. tenuis gradually increased but the growth rate slowed down, while the searching efficiency gradually decreased. These results indicate that N. tenuis, especially the female adults, has significant pest control potential against the three pests and can be used as an important natural enemy for biological control.

Key words: Nesidiocoris tenuis, Bemisia tabaci, Myzus persicae, Spodoptera frugiperda, predatory functional response, searching efficiency

CLC Number:

S476.2

XIAO Qingli, ZHANG Yuting, YANG Chuyun, PAN Haodong, LI Chenyi, XIE Hengduo, PENG Yu, JIANG Wenhui, REN Guangwei, XU Pengjun. Predatory Functional Response of Nesidiocoris tenuis to Bemisia tabaci, Myzus persicae, and Spodoptera frugiperda[J]. Chinese Journal of Biological Control, 2026, 42(3): 562-568.

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