摘要
在实验室条件下,研究了三种瓢虫即多异瓢虫、七星瓢虫和横斑瓢虫各龄幼虫捕食麦二又蚜的功能反应,捕食者对猎物密度的功能反应可用 Holling Ⅰ型模型拟合,经卡方检验,其理论值与实际观察值很接近,说明模拟后的各方程可用来描述各龄幼虫捕食功能反应的情况。各龄幼虫理论最大捕食量以横斑瓢虫最高,次为七星瓢虫,一至二龄幼虫捕食量较低且差异不大,三至四龄捕食量激增,四龄又明显高于三龄。
The functional responses of larvae of three ladybirds,Adonia variegata,
Coccinella septempunctata and C,transversogutata to the aphid Schizaphis graminum
were investigated in the laboratory.The functional responses of the predators to
the prey can be described by the models of Holling Ⅱ.X^2 tests showed that
the theoretical expectation fits the observed values.The catching numbers of
larvae of C.transversogutata is the largest and.C.septempunctata the next to it.
出处
《昆虫天敌》
CSCD
1992年第4期180-185,共6页
Natural Enemies of Insects
关键词
幼虫
功能反应
瓢虫科
麦二叉蚜
Adonia variegata,Coccinella septempunctata,C.transversogutata larvae,functional response
