摘要
研究了不同猎物虫态、不同猎物密度、不同捕食者密度、不同温度下青翅蚁形隐翅虫(Paederus fusci-pesCurtis)对菜粉蝶(Pieris rapaeLinnaeus)卵捕食作用的影响。结果表明:1)青翅蚁形隐翅虫对菜粉蝶卵的捕食能力显著高于其低龄幼虫;2)不同猎物密度下的捕食功能反应符合HollingⅡ型方程,其方程为Na=1.031 8N/(1+0.016 9N),寻找效应则随着猎物密度的增加而减少;3)青翅蚁形隐翅虫干扰反应模型为E=0.595 3P-0.690 2,随着捕食者密度的增大,平均捕食量逐渐减少;4)不同温度下的捕食量以25~30℃时最高。
Predation of Paederus fuscipes Curtis on the eggs of Pieris rapae Linnaeus was studied at different circumstances,including diferent stages of Pieris rapae, different densities of Pieris rapae eggs, different densities of Paederus fuscioes, and different temperatures. The results showed that: 1) eggs were more than younger larvae predated by Paederus fuscioes in numbers;2)the relationship between the predator and prey number was fitted Holling Ⅱ type,ie. N_a =1. 031 8N/(1+0. 016 9 N), the searching efficiency decreased as the prey density increased; 3)the intraspecific interference of Paederus fuscioes was expressed as E=0. 595 3 P^(-0.690 2), the average preying number went down as the density of predator arised; 4)the preying number is the largest at 25-30 ℃ under different tempratures.
出处
《长江大学学报（自科版）（中旬）》
CAS
2006年第1期113-115,共3页
Journal of Yangtze University(Nature Science Edition)
基金
湖北省教育厅资助项目(2002X22)
