黑带食蚜蝇对烟蚜的捕食功能反应

Study on the Predation of Epistrophe balteata De Geer to Myzus persicae (Sulzer)

通过对黑带食蚜蝇对烟蚜的捕食作用研究 ,得到 1,2 ,3龄幼虫对烟蚜的捕食功能反应模型为Na =0 2 497N/(1+ 0 2 497× 0 1486N) ,Na =1 175 6N/(1+ 1 175 6× 0 0 2 98N) ,Na =0 9899N/(1+ 0 9899× 0 0 0 5 0N) ,日最大捕食量依次为 6 73头 ,33 5 6头 ,2 0 2 1头。结果表明 。

Epistrophe balteata De Geer is one of the dominant species in the tabacco field in Yunnan The functional response analysis shows that it predation efficiency to Myzus persicae is a negative acceleration curve Hollings (1959) disc equation has been used to describe syrphid predation to the aphid Its functional model is as follows: 1st instar larva: Na=0 249 7 N/(1+0 249 7×0 148 6 N) 2nd instar larva: Na=1 175 6 N/(1+1 175 6×0 029 8 N) 3rd instar larva: Na=0 989 9 N/(1+0 989 9×0 005 0 N) The most consuming rate by Epistrophe balteata to Myzus persicae per day is 6 73,33 56,202 1, respectively.