黄带犀猎蝽对草地贪夜蛾幼虫的捕食作用  

Predation of the Larvae of Spodoptera frugiperda(J.E.Smith) by Sycanus croceouittatus Dohrn

作　　者：王亚楠[1,2] 赵胜园 何运转 吴孔明[3] 李国平[2] 封洪强[2] WANG Yanan;ZHAO Shengyuan;HE Yunzhuan;WU Kongming;LI Guoping;FENG Hongqiang(College of Plant Protection,Hebei Agricultural University,Baoding 071000,China;Institute of Plant Protection,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;Institute of Plant Protection,Chinese Academy of Agricultural Sciences/State Key Laboratory for Biology of Plant Diseases and Insect Pests,Beijing 100193,China)

机构地区：[1]河北农业大学植物保护学院,保定071000 [2]河南省农业科学院植物保护研究所,郑州450002 [3]中国农业科学院植物保护研究所/植物病虫害生物学国家重点实验室,北京100193

出　　处：《中国生物防治学报》2020年第4期525-529,共5页Chinese Journal of Biological Control

基　　金：国家重点研发计划(2019YFD0300105,2018YFD0200605,2016YFD0300705);农业农村部2019年全国草地贪夜蛾应急调研指导项目。

摘　　要：为探明天敌昆虫黄带犀猎蝽对草地贪夜蛾幼虫的捕食潜力,本试验在温度(25±1)℃,相对湿度(65±5)%,光周期16L:8D的室内条件下,观察了黄带犀猎蝽4、5龄若虫对草地贪夜蛾3龄幼虫的捕食行为特点,并研究了其捕食能力。结果表明:黄带犀猎蝽捕食草地贪夜蛾时,将口针刺进猎物体内,使其麻痹后进行取食,直至猎物干瘪,但有时并不吸取完全,而是继续攻击其他猎物。黄带犀猎蝽4、5龄若虫对草地贪夜蛾3龄幼虫的捕食功能反应符合HollingⅡ模型,4、5龄若虫对草地贪夜蛾3龄幼虫的瞬时攻击率为1.159和2.913,处理时间为0.297和0.261 d,日最大捕食量为3.906和3.831头。研究表明黄带犀猎蝽对草地贪夜蛾幼虫的防控具有一定的潜力。To determine the predation capacity of the natural enemies,Sycanus croceouittatus Dohrn,on the larvae of Spodoptera frugiperda(J.E.Smith),the predatory behavior and the functional response of 4th and 5th instar nymphs of S.croceouittatus to the 3 rd instar larvae of S.frugiperda were investigated in the laboratory under the conditions of(25±1) ℃,RH(65±5)% and a photoperiod of 16 L:8 D.When the S.croceouittatus preyed on the S.frugiperda,it used the stylet to puncture into the prey body to paralyze the prey,and then sucked the prey until it was empty and dry.However,sometimes the predator transferred to attack another prey before a complete sucking.The predatory functional response of 4th and 5th instar nymphs S.croceouittatus fitted well with Holling II,with attacking efficiency of 1.159 and 2.913,handling time of 0.297 d and 0.261 d,and the maximum daily predation number of 3.906 and 3.831,respectively.These results show that S.croceouittatus has potential for the control of S.frugiperda.

关 键 词：黄带犀猎蝽 草地贪夜蛾 捕食 生物防治 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]