益蝽对亚洲玉米螟幼虫的捕食行为及捕食功能反应  

Predation Behaviors and Functional Responses of Picromerus lewisi to the Larvae of Ostrinia furnacalis

作　　者：符成悦 徐天梅 温绍海 张帅[1] 刘飞[1] 杜广祖[1] 陈斌[1] 张立敏[1,2] FU Chengyue;XU Tianmei;WEN Shaohai;ZHANG Shuai;LIU Fei;DU Guangzu;CHEN Bin;ZHANG Limin(State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan/College of Plant Protection,Yunnan Agricultural University,Kunming 650201,China;International Cooperation and Exchange Department,Yunnan Agricultural University,Kunming 650201,China)

机构地区：[1]云南农业大学植物保护学院/云南生物资源保护与利用国家重点实验室,昆明650201 [2]云南农业大学国际合作交流处,昆明650201

出　　处：《中国生物防治学报》2021年第5期956-962,共7页Chinese Journal of Biological Control

基　　金：国家重点研发计划(2019YFD0300105,2018YFD0200703);国家自然科学基金(31660537,31760519)。

摘　　要：益蝽Picromeruslewisi(Scott)是一种重要的捕食性天敌昆虫,本文研究了其对亚洲玉米螟Ostrinia furnacalis(Guenée)的捕食作用,为亚洲玉米螟的生物防治及益蝽的生防作用开发提供科学依据。本研究在室内(27±1)℃、光周期16L:8D条件下,采用圆盘法测定了益蝽2、3、4和5龄若虫及雌、雄成虫对亚洲玉米螟2和3龄幼虫的捕食作用与搜寻效应,利用HollingⅡ方程对捕食测定数据进行模拟,建立了益蝽对亚洲玉米螟幼虫的捕食功能反应模型。结果表明:益蝽2、3、4和5龄若虫及雌、雄成虫对亚洲玉米螟2和3龄幼虫均具有捕食作用,其捕食功能反应属于Holling II型,搜寻效应均随猎物密度的增加而降低。益蝽5龄若虫对亚洲玉米螟2龄幼虫的控害效能最强,为252.900,瞬时攻击率为1.012,实际日最大捕食量为26.40头/d;益蝽雌成虫对亚洲玉米螟3龄幼虫的控害效能最强,为202.900,瞬时攻击率为0.812,实际日最大捕食量为14.60头/d。益蝽雄成虫与益蝽5龄若虫和雌成虫之间各指数无显著性差异。综合以上结果,益蝽5龄若虫和成虫对亚洲玉米螟幼虫具有较强的捕食作用,具有良好的生防潜力。Picromerus lewisi Scott is an important predatory natural enemy insect. Predation ability of different stages of P. lewisi to the Asian corn borer Ostrinia furnacalis Guenée and their biological control potential were examined through measurement of the predation function and searching efficiency of the 2 nd, 3 rd, 4 th, 5 th instar nymphs and adults of P. lewisi to the 2 nd and 3 rd instar larvae of O. furnacalis in an indoor light incubator at(27±1) ℃and photoperiod 16 L:8 D. The functional responses of different stages of nymphs and adult to the 2 nd and 3 rd instar larvae of O. furnacalis fitted well with Holling Ⅱ model. The predation capacity of the 5 th instar nymphs of P.lewisi to the 2 nd instar larvae of O. furnacalis was 252.900, the instantaneous attack rate(a) was 1.012, and the daily maximum predation was 26.40. The predation capacity of P. lewisi females to the 3 rd instar larvae of O.furnacalis was 202.900, the instantaneous attack rate(a) was 0.812, and the daily maximum predation was 14.60.There were no significant differences in the indexes between the male adults and the 5 th instar nymphs or female adults of the P. lewisi. Based on the above results, the 5 th instar nymph and adult of P. lewisi have a strong predation effect on larvae of O. furnacalis and have good biocontrol potential.

关 键 词：益蝽 亚洲玉米螟 捕食功能反应 搜寻效应 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]