黄玛草蛉对木瓜粉蚧的捕食作用评价  

Functional response of Mallada basalis(Walker)(Neuroptera:Chrysopidae)on Paracoccus marginatus Williams and Granara de Willink(Hemiptera:Pseudococcidae)

作　　者：李子园 周娟[1] 关迎雪 程东美 陆永跃[1] 陈科伟[1,2] LI Zi-Yuan;ZHOU Juan;GUAN Ying-Xue;CHENG Dong-Mei;LU Yong-Yue;CHEN Ke-Wei(College of Plant Protection,South China Agricultural University,Guangzhou 510640,China;Key Laboratory of Bio-Pesticide Innovation and Application,Guangzhou 510640,China;College of Agriculture and Biology,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China)

机构地区：[1]华南农业大学植物保护学院,广州501640 [2]广东省生物农药创制与利用重点实验室,广州501640 [3]仲恺农业工程学院农业与生物学院,广州510225

出　　处：《环境昆虫学报》2021年第2期322-328,共7页Journal of Environmental Entomology

基　　金：广东省甘蔗/剑麻产业技术体系创新团队项目(2019KJ104-08);广东省农村科技特派员项目(2018A0137);广东省外来入侵物种风险评估和监测预警共性关键技术研发创新团队建设项目(2019KJ134);广东省现代农业产业共性关键技术研发创新团队项目(2019KJ133)。

摘　　要：为明确黄玛草蛉Mallada basalis(Walker)对木瓜粉蚧Paracoccus marginatus Williams and Granara de Willink的捕食作用,在实验室条件下观察了黄玛草蛉2龄、3龄幼虫对木瓜粉蚧2龄、3龄若虫及成虫的捕食选择偏好,同时采用捕食功能反应方法评价了黄玛草蛉2龄、3龄幼虫对木瓜粉蚧各虫态的捕食效能。结果表明,黄玛草蛉2龄、3龄幼虫偏好捕食木瓜粉蚧若虫,对木瓜粉蚧各虫态的捕食量均随着猎物密度的增加而增加符合HollingⅡ模型。其中,黄玛草蛉3龄幼虫具有较高的捕食能力,其对木瓜粉蚧2龄、3龄若虫及成虫的日最大捕食量分别为116头、81头和19头,a/Th值(a为瞬时攻击率,Th为处置单头猎物时间)分别为284.76、134.26和28.38。黄玛草蛉幼虫对猎物的寻找效应随猎物密度的增加而呈线性下降,且在相同猎物密度条件下,黄玛草蛉3龄幼虫对猎物的搜寻效应明显高于2龄幼虫。研究结果表明,黄玛草蛉对木瓜粉蚧具有较好的捕食能力。The prey stage preference and functional response of Mallada basalis(Walker)(Neuroptera:Chrysopidae)to Paracoccus marginatus Williams and Granara de Willink(Hemiptera:Pseudococcidae)were tested under laboratory conditions.Overall,the 2 nd and 3 rd instar larvae of M.basalis preferred the nymphs of P.marginatus rather than the adults.The studies revealed that behaviour of both the 2 nd and 3 rd instar larvae of M.basalis matched Holling s Type II functional response.With increased density of P.marginatus,the number of preys consumed by the 3 rd instar larvae of M.basalis was higher than that by the 2 nd instar larvae.The daily maximum number of the second,third instar nymph and adults of P.marginatus consumed by the 3 rd instar larvae of M.basalis were 116,81 and 19,respectively,and the corresponding a/Th(a is the attack rate,Th is the handling time)value were 284.76,134.26 and 28.38,respectively.The searching rate of M.basalis larvae decreased with the increase of prey densities,and the 3 rd instar larvae of M.basalis showed a higher searching efficiency than that of the 2 nd instar larvae.Results showed that M.basalis was an efficient predator for biological control of P.marginatus.

关 键 词：黄玛草蛉 木瓜粉蚧 捕食功能反应 寻找效应 猎物选择 

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]