期刊
INTERNATIONAL JOURNAL OF PEST MANAGEMENT
卷 57, 期 1, 页码 85-92出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09670874.2010.539714
关键词
Ceutorhynchus obstrictus; C. assimilis; Trichomalus perfectus; Mesopolobus morys; Stenomalina gracilis; winter oilseed rape; larval parasitisation rate
类别
资金
- Estonian Science Foundation [SF0170057s09, 7391, 8-2/T9003PKPK]
Ceutorhynchus obstrictus (Marsham) (Coleoptera: Curculionidae) is a major pest of oilseed rape in Europe and North America. The last decade has seen growing interest in the occurrence, importance and efficiacy of its parasitoids as biocontrol agents. The infestation of pods by C. obstrictus larvae and their parasitism rates were assessed in a total of nine commercially-grown crops and fifteen experimental plots of winter oilseed rape in 2004-2007. Pod samples were collected at the pod maturation stage and incubated in emergence traps. Emerged larvae, their exit holes and parasitoids were counted and identified; the percentage of infested pods and parasitism rates were calculated. Pod infestation by larvae increased continuously over the study period. The parasitism level was lowest in 2005 and increased thereafter up to 96%. The most abundant parasitoid was Trichomalus perfectus (Walker), but Mesopolobus morys (Walker) and Stenomalina gracilis (Walker) (Hymenoptera: Pteromalidae) were also reared from host larvae. This study showed that naturally-occurring ectoparasitoids of C. obstrictus were capable of becoming established as viable populations and have the potential to contribute to biological control of C. obstrictus.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据