七星瓢虫对豌豆蚜的捕食功能反应  

Functional response of Coccinella septempunctata to Acyrthosiphon pisum in laboratory

作　　者：武德功[1] 王森山[1] 胡桂馨[1] 杜军利[1] 贺春贵[1] 

机构地区：[1]甘肃农业大学草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中-美草地畜牧业可持续发展研究中心,甘肃兰州730070

出　　处：《草原与草坪》2012年第1期12-17,23,共7页Grassland and Turf

基　　金：国家科技支撑计划项目(2006BAD04A04-01);苜蓿抗蚜新品种选育(036030);甘肃省教育厅科研项目(0902-10)资助

摘　　要：为了解七星瓢虫控制苜蓿上豌豆蚜的能力,在实验室智能人工气候箱,于培养皿中放入其不同龄幼虫和不同头数进行培养,最后测定了七星瓢虫各龄幼虫及雌雄成虫对豌豆蚜的捕食功能反应。结果表明,七星瓢虫4个龄期幼虫和雌雄成虫的功能反应均符合功能反映曲线Holling-Ⅱ型;七星瓢虫雌成虫的攻击率最大,处置时间最短;同一发育时期的七星瓢虫在豌豆蚜不同密度时的捕食量差异显著;根据捕食功能反应数据,该模型预测了七星瓢虫1～4龄幼虫及雄、雌成虫对豌豆蚜的最大捕食量分别是5.7、11.5、32.1、59.5、57.1和76.9头/d。The functional response of Coccinella septempunctata to Acyrthosiphon pisum was investigated under laboratory condition to find out the control ability of C.septempunctata to A.pisum in alfalfa.The results indicated that plotting prey density against prey killed by four larval instars,and adult C.septempunctata match the Holling-II curve.The adult female had the highest attack rate and shortest handling time.The prey consumption of C.septempunctata were significant differences in the same stage under various prey densities.The model predicts a maximum of predation per day by individual were 5.7,11.5,32.1,59.5,57.1,and 76.9 nymphs respectively which corrsponding first,second,third,fourth instars,adult males,and adult females.

关 键 词：七星瓢虫 豌豆蚜 功能反应 捕食 

分 类 号：S435.5[农业科学—农业昆虫与害虫防治]