叉角厉蝽对斜纹夜蛾生殖行为的干扰胁迫  

Studies on the effect of nonconsumption stress of Eocanthecona furcellata (Wolff) on reproductive fitness of Spodoptera litura (Fabricius)

作　　者：陈美云[1] 陈科伟[1] 王兰兰[1] 贾彩娟 冼继东[1] 

机构地区：[1]华南农业大学资源环境学院,广州501640 [2]深圳市梧桐山风景区管理处,深圳518004

出　　处：《环境昆虫学报》2014年第6期884-889,共6页Journal of Environmental Entomology

基　　金：广东现代农业产业技术体系建设专项资金(LNSG-11);深圳梧桐山风景区管理处科研资金专项

摘　　要：为探索叉角厉蝽Eocanthecona furcellate(Wolff)对斜纹夜蛾Spodoptera litura(Fabricius)生殖行为的干扰胁迫作用,实验设置了3种处理来观察这种干扰效应,处理Ⅰ:2对斜纹夜蛾成虫+2头叉角厉蝽雌成虫;处理Ⅱ:2对斜纹夜蛾成虫+2头叉角厉蝽雌成虫+2头的斜纹夜蛾四龄幼虫;处理Ⅲ:两对斜纹夜蛾成虫,作为对照。将斜纹夜蛾成虫放置在上述3种条件下,饲养至斜纹夜蛾停止产卵为止,对斜纹夜蛾产卵行为跟踪观察。结果表明,当斜纹夜蛾与叉角厉蝽同处狭小的空间时,叉角厉蝽对斜纹夜蛾正常的生殖活动有一定的干扰作用,斜纹夜蛾采取逃离或躲避的措施来摆脱叉角厉蝽的接触。受叉角厉蝽的干扰胁迫,斜纹夜蛾产卵量减少,处理Ⅰ与处理Ⅱ的平均产卵量均明显少于对照。叉角厉蝽对斜纹夜蛾卵块数量、结构、大小也构成一定的影响。在处理Ⅰ与处理Ⅱ中,卵块主要以单层卵和双层卵卵块为主,卵块数量低于对照,且卵块体积较小。从斜纹夜蛾卵的空间格局来看,处理Ⅰ中的卵块主要分布于产卵笼的上部;处理Ⅱ中的卵块分散于产卵笼的中上部;对照中斜纹夜蛾的卵块则分布于产卵笼的各个区域。叉角厉蝽对斜纹夜蛾成虫产卵的干扰胁迫作用明显。In order to understand the non - consumption stress effect of Eocanthecona furcellate （Wolff） on the reproductive fitness of Spodoptera litura （ Fabricius）, three treatments were set up. Treatment Ⅰ ： Two paired S. litura adults, plus two E. furcellate female adults. Treatment Ⅱ ： Two paired S. litura adults, plus two E. furcellate female adults, and plus two 4th instar larvae of E. furceUate. TreatmentⅢ ： Only two paried S. litura adults as control. The results showed that, non - consumption stress from E. furcellate affected the reproduction fitness of S. litura adults obviously when they were stayed together in a narrow space together, S. litura adults usually tried to run away from the touch of E. furcellate, and the fecundity of S. litura was reduced under the distraction from E. furcellate. The average fecundity of E. furcellate female in the treatment I and treatment Ⅰ were were significantly less than the control. E. furcellate also had a strong impact on the quantity, size, construction and space distribution of egg - masses of S. litura. In the treatment Ⅰ and Ⅱ, the number of egg masses of S. litura were less, and the volume of egg - masses were smaller than the control, and egg - masses were mainly composed with single and double layer eggs. From the vertical distribution pattern of the S. litura eggs, egg masses mainly located in the upper part of the cage in the Treatment Ⅰ , and the middle - upper part in the TreatmentⅡ, while egg - masses were intensively distributed at the bottom part of the cage results suggested that E. furcellate had an obvious nonconsumption stress effect on of S. litura. in the control. production These fitness

关 键 词：叉角厉蝽 斜纹夜蛾 干扰胁迫 生殖行为 

分 类 号：Q968.1[生物学—昆虫学] S476[农业科学—农业昆虫与害虫防治]