龟纹瓢虫对草地贪夜蛾卵和低龄幼虫的捕食作用  

Predation of Propylaea japonica to the eggs and young larvae of Spodoptera frugiperda

作　　者：蒋骏 张熠玚 王文文 秦慧敏 田密 刘同先[1] 张世泽[1] JIANG Jun;ZHANG Yiyang;WANG Wenwen;QIN Huimin;TIAN Mi;LIU Tongxian;ZHANG Shize(State Key Laboratory of Crop Stress Biology for Arid Areas,College of Plant Protection,Northwest A&F University,Yangling 712100,China)

机构地区：[1]旱区作物逆境生物学国家重点实验室,西北农林科技大学植物保护学院,杨凌712100

出　　处：《植物保护》2020年第3期188-193,219,共7页Plant Protection

基　　金：国家重点研发计划(2017YFD0201006);国家大宗蔬菜产业技术体系(CARS-23-D-06)。

摘　　要：为明确龟纹瓢虫Propylaea japonica对草地贪夜蛾Spodoptera frugiperda的控害潜力,在(25±1)℃、L∥D=16 h//8 h、RH (60±5)%的条件下研究了龟纹瓢虫雌、雄成虫和4龄幼虫对草地贪夜蛾卵、1龄和2龄幼虫的捕食能力。结果表明,龟纹瓢虫4龄幼虫和雌、雄成虫对草地贪夜蛾卵、1龄和2龄幼虫的捕食反应均符合HollingⅡ模型。龟纹瓢虫雌、雄成虫和4龄幼虫对草地贪夜蛾卵的日最大捕食量分别为204.6、110.9粒和124.7粒,瞬时攻击率分别为1.125、1.658和1.429,处理时间分别为0.004 9、0.009 0 d和0.008 0 d;对草地贪夜蛾1龄幼虫的日最大捕食量分别为242.4、265.5头和109.4头,瞬时攻击率分别为1.233、1.038和1.411,处理时间分别为0.004 1、0.003 8 d和0.009 1 d;对草地贪夜蛾2龄幼虫的日最大捕食量分别为41.2、40.3头和27.6头,瞬时攻击率分别为1.386、1.226和1.685,处理时间分别为0.024 3、0.024 8 d和0.036 2 d。雌、雄成虫和4龄幼虫对草地贪夜蛾卵和低龄幼虫的搜寻效应均随着猎物密度的增加而降低。龟纹瓢虫对草地贪夜蛾卵和1龄幼虫的捕食量高于2龄幼虫。结果表明龟纹瓢虫对草地贪夜蛾卵和低龄幼虫具有较好的控制作用,为利用龟纹瓢虫控制草地贪夜蛾提供了理论依据。To clarify the predatory potential of Propylaea japonica against Spodoptera frugiperda,the predation and control ability of fourth instar, female and male adults of P.japonica against the eggs and young larvae of S.frugiperda were studied under conditions of(25±1)℃, L//D=16 h//8 h, RH(60±5)%. The results showed that the functional response of P.japonica female, male adults and fourth instar against the eggs, first and second instar of S.frugiperda all fitted well with Holling Ⅱ model. The maximum daily predation numbers of P.japonica female, male adults and fourth instar to the eggs of S.frugiperda were 204.6, 110.9 and 124.7, respectively;the instantaneous attack rates were 1.125, 1.658 and 1.429, respectively and the handling time were 0.004 9, 0.009 0 and 0.008 0 d, respectively. The maximum daily predation numbers of P.japonica female, male adults and fourth instar to the first instar of S.frugiperda were 242.4, 265.5 and 109.4, respectively;the instantaneous attack rates were 1.233, 1.038 and 1.411 respectively and the handling time were 0.004 1, 0.003 8 and 0.009 1 d. The maximum daily predation numbers of P.japonica female, male adults and fourth instar to second instar of S.frugiperda were 41.2, 40.3 and 27.6, respectively;the instantaneous attack rates were 1.386, 1.226 and 1.685, respectively and the handling time were 0.024 3, 0.024 8 and 0.036 2 d, respectively. The predation numbers of P.japonica to first instar and eggs of S.frugiperda were more than to second instar. The searching efficiency of P.japonica to the eggs, first and second instar of S.frugiperda decreased gradually with the increase of prey density. The results indicate that P.japonica has a good control potential on S.frugiperda, which provide theoretical evidence for prevention and control of S.frugiperda by using P.japonica.

关 键 词：龟纹瓢虫 草地贪夜蛾 捕食作用 功能反应 生物防治 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治] S433.4[农业科学—植物保护]