外来广聚萤叶甲对非靶标植物的选择行为  

Host-selection Behavior of Exotic Ophraella communa(Chrysomelidae,Coleoptera)for Non-target Plants

作　　者：王宏媛[1] 李保平[1] 孟玲[1] 

机构地区：[1]南京农业大学昆虫学系/农业部病虫监测与治理重点开放实验室,南京210095

出　　处：《中国生物防治》2009年第2期120-124,共5页Chinese Journal of Biological Control

基　　金：国家重点基础研究发展计划(2009CB119200);国家十一五科技支撑计划(2006BAD08A18);国家自然科学基金(30470295)

摘　　要：为评估外来广聚萤叶甲作为入侵豚草的潜在生物防治作用物对非靶标植物的潜在风险,分别观察了成虫产卵和初孵幼虫取食的选择行为,首次在杂草天敌寄主专一性测定中采用生存分析(失败时间分析)法,比较了在三裂叶豚草、苍耳、食用农家向日葵三道黑品种、油用向日葵辽丰F51品种、多花向日葵和菊芋等菊科向日葵族非靶标植物上的产卵识别期和初孵幼虫取食前期的差异。研究结果表明,在三裂叶豚草和苍耳上产卵的概率与豚草没有显著差异,但在几种向日葵属植物上产卵的概率显著低于豚草;初孵幼虫对农家向日葵的取食选择概率与豚草没有显著差异,在其他供试植物上的取食前期均显著延长(P<0.05)。对应用广聚萤叶甲防治外来入侵豚草对非靶标植物的潜在风险进行了讨论。To assess the potential risk to non-target plants of exotic Ophraella communa as a potential biological control agent of the target weed, an alien invasive weed Ambrosia artemisiifolia L., host-selection behaviors of ovipositing females and neonate larvae were observed on non-target plants in the tribe of composite, Heliantheae, A . trifida , Xanthium sibiricum , two varieties of Helianthus annuus , H . multiflorus, and H. tuberosus. Pre-oviposition and pre-feeding durations were analyzed using the survival analysis （failure-time analysis） method in host-specificity testing of weed biological control agent. The resuits showed that A. trifida and X. sibiricum were equally susceptible to oviposition compared to the target weed. Pre-feeding duration was not different between the common sunflower H. annuus and the target weed A. artemisiifolia. Finally, the potential risks of O. communa to non-target plants in areas where it is used as a biological control agent of the alien invasive weed Ambrosia artemisiifolia was discussed.

关 键 词：广聚萤叶甲 豚草 寄主专一性 风险评估 杂草生物防治 

分 类 号：S451[农业科学—植物保护] S476.2