摘要
在实验室条件下，对双带盘瓢虫捕食桔蚜进行了初步研究，用Ｈｏｌｉｎｇ－Ⅱ型和Ｈｏｌｉｎｇ－Ⅲ型功能反应新模型对双带盘瓢虫捕食桔蚜的作用进行拟合。结果表明，功能反应的数学模型为Ｎａ＝１．０８２０Ｎｔ１＋１．０８２０×０．０３３Ｎｔ和Ｎａ＝１３１．３４ｅｘｐ（－５０．９２Ｎｔ－１）。一头双带盘瓢虫对桔蚜的最佳寻找密度为５０．９２头。该瓢虫对桔蚜的捕食作用受自身密度的制约，相互间对捕食率存在干扰。
In laboratory, the predaceous role of Lemnia biplagiata to Toxoptera citricidas was studied, and simulated with the mathematical models of Holling Ⅱ and Holling Ⅲ. The result is as follows:the mathematical model of the functional response are: Na=10820Nt1+10820×0033Nt and Na=13134exp(-5092Nt-1). The best seeking density is 5092 or so per ladybird. Its predaceous role to Toxoptera citricida is restricted by selfdensity. The predaceous rate is disturbed by themselves.
出处
《昆虫天敌》
CSCD
1998年第1期9-12,共4页
Natural Enemies of Insects
关键词
双带盘瓢虫
桔蚜
捕食
Lemnia biplagiata Toxoptera citricida Predaceous role
