中华通草蛉幼虫对草地贪夜蛾卵和低龄幼虫的捕食作用
Predatory responses of Chrysoperla sinica (Tjeder) larvae to Spodoptera frugiperda (J. E. Smith) eggs and larvae
黄海艺 刘亚男 亓永凤 许永玉 陈珍珍
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DOI：10.7679/j.issn.2095-1353.2020.137
作者单位：山东农业大学植物保护学院昆虫学系，泰安 271018；泗水县农业农村局，济宁 273200
中文关键词：中华通草蛉；草地贪夜蛾；捕食功能；自身密度
英文关键词：Chrysoperla sinica; Spodoptera frugiperda; predation function; self-density
中文摘要：
【目的】 明确天敌昆虫中华通草蛉Chrysoperla sinica对草地贪夜蛾Spodoptera frugiperda的捕食能力，为草地贪夜蛾的绿色防控提供技术支持。【方法】 在室内（25±1）℃条件下对中华通草蛉各龄幼虫的捕食功能反应模型进行评估。【结果】 中华通草蛉各龄幼虫对草地贪夜蛾的卵及低龄幼虫的捕食作用均能够很好的拟合HollingⅡ功能反应模型，且均具较高的可信度。中华通草蛉对草地贪夜蛾卵及低龄幼虫捕食率随着草蛉幼虫龄期增大而增大，且以3龄幼虫捕食率最高。中华通草蛉3龄幼虫对草地贪夜蛾卵的理论日最大捕食量、瞬时攻击率和处理时间分别为192头、1.06和0.005 d，对草地贪夜蛾1龄幼虫的理论日最大捕食量、瞬时攻击率和处理时间分别为166.7 头、0.889和0.006 d。中华通草蛉捕食草地贪夜蛾卵时其1龄、2龄、3龄幼虫的相互干扰系数m分别为0.184、0.260和0.224，干扰效应明显小于捕食草地贪夜蛾1龄和2龄幼虫，说明中华通草蛉对草地贪夜蛾卵具有良好的控制作用。【结论】 中华通草蛉是草地贪夜蛾卵、1龄和2龄幼虫潜在的生防天敌之一。
英文摘要：
[Objectives] To investigate the potential of Chrysoperla
sinica to act as a biological control for Spodoptera frugiperda eggs and larvae. [Methods] Predatory
responses of C. sinica to S. frugiperda eggs and larvae were
measured at (25±1) ℃ under laboratory conditions. [Results] Predatory responses of all larval stages
of C. sinica were of the Holling Ⅱ type, and all had high
reliability. The theoretical daily maximum predation rate, instantaneous attack
rate and processing time of third instar C.
sinica larvae on S. frugiperda eggs were 192, 1.06 and 0.005 d, respectively, whereas those of 1st instar
larvae were 166.7, 0.889 and 0.006 d, respectively. The interaction
coefficients of 1st, 2nd and 3rd instar larvae to S. frugiperda eggs were 0.184, 0.260 and 0.224, respectively. The
interference effect was significantly smaller in first and second instar
larvae, which indicates that C. sinica can effectively control S. frugiperda eggs. [Conclusion] The results show that C. sinica is a potential biological control agent for the eggs and
1st and 2nd instars of S. frugiperda.