| ,2014,异色瓢虫对豆蚜的捕食功能反应[J].环境昆虫学报,(6):965-970 |
| 异色瓢虫对豆蚜的捕食功能反应 |
| The predation functional response of Harmonia axyridis Pallas to Aphis craccivora |
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| DOI： |
| 中文关键词: 异色瓢虫 豆蚜 寻找效应 功能反应 |
| 英文关键词:Harmonia axyridis Aphis craccivora searching efficiency functional response |
| 基金项目:国家自然科学基金（31272099）；国家林业局项目\[(2011)03\];北京农学院害虫综合防治创新平台建设（5095237001/029）；北京农学院研究生改革与发展项目（2014YJS005）；现代农业产业体系北京市西甜创新团队建设项目（PXM2013-014207-00013）；市委、市政府重点工作异色瓢虫周年繁育与应用技术研究(Z121100000312078) |
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| 中文摘要: |
| 试验开展了异色瓢虫Harmonia axyridis Pallas对豆蚜Aphis craccivora Koch的捕食功能反应研究。结果表明，异色瓢虫各虫态的功能反应类型均属于HollingⅡ型。随着豆蚜数量的上升，异色瓢虫对豆蚜的捕食增加量逐渐减小直至趋于稳定。异色瓢虫各龄幼虫、成虫对豆蚜的寻找效应均随豆蚜数量的增加而减小。异色瓢虫4龄幼虫的a/Th值最大，为2255.67，捕食功能最强，其后为成虫、3龄、2 龄、1龄幼虫。 |
| 英文摘要: |
| The test on predation functional response about Harmonia axyridis to bean aphid was studied The results indicated that predation effects of Haxyridis each larvae to Aphis craccivora were corresponding with HollingⅡmodel pattern With the increase of prey density,the increasing amount of Haxyridis preying bean aphid decreased gradually and was going to be a steady value Larvae and adults of Haxyridis had the lower searching efficiency with the increase of prey density The maximum value of a/Th belongs to the fouth instar with 225567，which means the fourth instar is the strongest predator,followed it up with adult,the third instar,the second instar,the first instar larvae successively |
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