宫靖垚,陈科伟,温健,刘杰,朱永基,2019,人工饲料饲养的叉角厉蝽对昆虫的捕食能力评价[J].环境昆虫学报,(3):471-478
人工饲料饲养的叉角厉蝽对昆虫的捕食能力评价
Predatory capacity of Eocanthecona furcellate (Wolff) reared with artificial diets
  
DOI:
中文关键词:  人工饲料  叉角厉蝽  黄粉虫  斜纹夜蛾  捕食能力
英文关键词:Artificial diet  Eocanthecona furcellate  Tenebrio molitor  Spodoptera litura  predatory capacity
基金项目:广东省农业标准化研究项目(粤财农\[2018\]2号);广东省农业科技特派员项目(粤科函社农字\[2018\]2136号);广州市科技计划项目(201604046002);广东省甘蔗剑麻产业技术体系创新团队项目
作者单位
宫靖垚,陈科伟,温健,刘杰,朱永基 1.华南农业大学农学院广州 5016402.广东省生物农药创制与利用重点实验室广州 501640 
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中文摘要:
      叉角厉蝽Eocanthecona furcellate(Wolff)是广泛分布于热带亚热带地区的一种重要捕食性天敌昆虫。为评估人工饲料饲养的叉角厉蝽的捕食能力,在实验室采用捕食功能反应的方法,以黄粉虫作为中介猎物饲养的叉角厉蝽为对照,评价了人工饲料饲养的叉角厉蝽3龄若虫、5龄若虫以及雌成虫对黄粉虫Tenebrio molitor(L)幼虫及斜纹夜Spodoptera litura (Fabricius) 3龄幼虫、5龄幼虫的捕食效能。结果表明,两种饲料饲养的不同虫态叉角厉蝽的捕食量均随着猎物密度的增加而上升,当猎物密度增加到一定水平,捕食量趋于稳定,其捕食功能反应均符合Holling II模型。人工饲料组饲养的各虫态叉角厉蝽与对照组的对黄粉虫幼虫的捕食量没有明显差异;在饱和猎物密度条件下,人工饲料饲养的叉角厉蝽3龄若虫、5龄若虫以及雌成虫对斜纹夜蛾3龄幼虫的日最大捕食量分别为7.20、9.20、14.60头,对斜纹夜蛾5龄幼虫的日最大捕食量分别4.20、5.80、6.20头,均略低于对照组,但从取食猎物数量上来看,仍保持较强的捕食能力。
英文摘要:
      Eocanthecona furcellata (Wolff) is an important predatory natural enemy distributed in tropical and subtropical regions.The effect of artificial diets on the predation ability ofE.furcellata to the larvae of Tenebrio molitor (L) and Spodoptera litura (Fabricius) was evaluated with functional response method in laboratory, E.furcellata fed with the larvae ofT.molitor were used as the control.The predatory efficiency of E.furcellata (3rd instar nymph, 5th instar nymph and female adults) to the larvae of T.molitor and S.litura (3rdinstar larvae and 5th instar larvae) were evaluated.Results showed that the prey consumed by two types of E.furcellata both increased with the increase of prey density, and when the prey density increased to saturation level, the quantity of prey consumed by E.furcellatatended to be stable.The predatory function responses ofE.furcellata in different development stage to the T.molitor and S.litura fit the Holling II model. No significant difference were observed in the predatory capacity to T.molitor larvae between E.furcellata reared with artificial diets and T.molitor larvae. Under the saturation prey density, the maximum number of 3rd instar larvae ofS.litura consumed by 3rdinstar nymph, 5th instar nymph and female adults of E.furcellata reared with artificial diets were 7.20, 9.20 and 14.60 daily, respectively, and they were 4.20, 5.80 and 6.20 when provided with 5th instar larvae of S.litura.Though the quantity of S.litura larvae consumed by E.furcellata reared with artificial diets was fewer than those reared with T.molitorlarvae, E.furcellata reared with artificial diets still kept the strong predatory capacity.
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