中黑盲蝽对小地老虎和甜菜夜蛾的捕食作用  

Predation of Adelphocoris suturalis on immature stages of Agrotis ypsilon and Spodoptera exigua

作　　者：李文静[1,2] 陆宴辉[2] 高希武[1] 吴孔明[2] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100193 [2]中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室,北京100193

出　　处：《应用昆虫学报》2012年第1期205-212,共8页Chinese Journal of Applied Entomology

基　　金：国际科技合作项目(2010DFA32200)

摘　　要：中黑盲蝽Adelphocoris suturalis(Jakovlev)具有植食性和肉食性,但对其肉食性缺乏研究。作者在室内环境下研究了中黑盲蝽对小地老虎Agrotis ipsilon(Hufnagel)、甜菜夜蛾Spodoptera exigua(Hübner)卵和初孵幼虫的捕食作用。研究显示:(1)中黑盲蝽的捕食量随猎物密度的增加而上升,捕食功能反应符合HollingⅡ型方程;(2)捕食量随着若虫龄期的增加而增加,高龄若虫、雌性成虫与雄性成虫之间的捕食量没有明显差异,但均显著高于2龄若虫。雌成虫对小地老虎卵及初孵幼虫、甜菜夜蛾卵及初孵幼虫的最大日捕食量分别为38.60粒和6.80头、56.62粒和5.80头,表明中黑盲蝽对小地老虎和甜菜夜蛾卵和初孵幼虫具有较强的捕食能力。Adelphocoris suturalis （Jakovlev）is an important insect pest of cotton and crops that feeds on both plants and insects. Little information is available on its predation of Lepidopteran insects. Aspects of the predation of A. suturalis on the eggs and new-hatched larvae of Agrotis ypsilon （Hufnagel） and Spodoptera exigua （Hübner） were investigated in the laboratory. The results show that A. suturalis could prey on both the eggs and new-hatched larvae of A. ypsilon and S. exigua, and that its functional responses closely approximate the Holling Ⅱ type. The predatory capacity of 4th-instar nymphs, 5-day-old male adults and 5-day-old female adults were not significantly different, but all were significantly higher than that of 2nd instar nymphs. The daily maximum predatory capacity of female adults for eggs and new-hatched larvae was 38.60 and 6.80 for A. ypsilon, and 56.62 and 5.80 for S. exigua, respectively. These results indicate that A. suturalis can effectively prey on the eggs and new-hatched larvae of A. ypsilon and S. exigua.

关 键 词：中黑盲蝽 小地老虎 甜菜夜蛾 捕食作用 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]