蓝蝽对马铃薯甲虫低龄幼虫的捕食潜能初探  

Predation potential of Zicrona caerula(Linnaeus) to the Leptinotarsa decemlineata(Say) low instar larvae

作　　者：舒敏[1,2] 克尤木.维勒木 罗庆怀[1] 刘伟伟[2] 牟刘森[2] 冯丽凯[2] 马宁[2] 王佩玲[2] 

机构地区：[1]贵州师范大学生命科学学院,贵阳550001 [2]石河子大学农学院,新疆石河子832000 [3]伊犁出入境检验检疫局综合技术服务中心,伊犁835000

出　　处：《环境昆虫学报》2012年第1期38-44,共7页Journal of Environmental Entomology

基　　金：2008年国家公益性行业(农业)科研专项(200803024);国家大学生创新性实验计划项目(101075927)

摘　　要：室内研究了蓝蝽Zicrona caerula(Linnaeus)对马铃薯甲虫Leptinotarsa decemlineata(Say)低龄幼虫的捕食功能反应和选择效应。HollingII型圆盘方程和HollingⅢ型新模型拟合结果共同显示,蓝蝽若虫对马铃薯甲虫1龄幼虫的捕食量随着龄期的增加而增大;4、5龄若虫及成虫的捕食量均在17头以上。由HollingII模型获得蓝蝽对马铃薯甲虫1龄幼虫的控制能力为2龄<3龄<4龄<5龄<成虫;随着食物密度的增加,蓝蝽各虫态的寻找效应逐渐下降。田间防治马铃薯甲虫1龄幼虫时,2～5龄蓝蝽若虫及成虫的最佳益害比应该分别为1∶2、1∶4、1∶13、1∶14、1∶13,然而,食物选择效应显示蓝蝽原生境中猎物-兰叶甲可能会对防治产生影响。The prodatory functional response of Zicrona caerula （Linnaeus） larvae and adults to Leptino- tarsa decemlineata （Say） low instar larvae and the selection of Zicrona caerula （Linnaeus） to two kind of insect food were explored in laboraty. Both results from Holling Ⅱ disc equation and Holling III new model show that the maximum predation capacities to Ⅲ instar Leptinotarsa decemlineata （Say） larvae incieased strongly along with the larva growth, and the maximum predation capacities of 4th to 5th instar larvae and adults are above seventeen. According to the results of Holling Ⅱ model pattern, the predacious abilities of Zicrona caerula （Linnaeus） to 1s＇ instar Leptinotarsa decemlineata （Say） larvae are 2nd instar 〈 3rd instar 〈 4th instar 〈 5th instar 〈 adults; the hunting effect to Leptinotarsa decemlineata （Say） larvae de- creased along with the increase of prey density. The optimal ratios of 2nd to 5th instar nymphs and adults of Zicrona caerula （Linnaeus） to 1at instar Leptinotarsa decemlineata （Say） larvae released in field are 1： 2, l： 4, 1： 13, 1： 14, and 1： 13. While the control effect may be influenced by the original habitat prey （bule leaf beetle） of Zicrorm caertda （Linnaeus）.

关 键 词：蓝蝽 马铃薯甲虫 捕食功能反应 寻找效应 选择效应 

分 类 号：Q968[生物学—昆虫学]