摘要
龟纹瓢虫雌虫和雄虫对豆蚜的功能反应符合ＨｏｌｌｉｎｇⅡ型模型，其模型为：Ｎａ＝０．９２３３Ｎ／（１＋０．０１７１Ｎ）（雌虫）和Ｎａ＝０．８６４１Ｎ／（１＋０．０１６４Ｎ）（雄虫），瓢虫捕食豆蚜的数量随豆蚜密度增加而增加，但寻找效应随豆蚜密度增加而降低。日最大捕食量和最佳寻找密度分别为３７．４２（雌）、３４．１１头（雄）和１７．２５（雌）、１５．８头（雄）。龟纹瓢虫寻找效应随自身密度的增加而降低，其数学模型为：Ｅ＝０．３０３２·Ｐ^(－１．５６３４)（雌）和Ｅ＝０．３０４８·Ｐ^(－１．４６９７)（雄）。干扰反应的数学模型为：Ｅ＝０．８１０４·Ｐ^(－２．１７２１)（雌），Ｅ＝０．７１２５·Ｐ^(－２．２６６８)，Ｅ＝０．５９６３·Ｐ^(－２．１７５１)（雌雄混合种群）。
The functional response models that Propylea japonica preyed on Aphis craccivora were Na=0.9233/(1+0.0171N)(female)and Na=0.8641/(1+0.01 64N)(male)respectively. Relationship between amount of aphid preyed by ladybirds and aphid densityshowed a negative accelerative curve,The daily maximuni number of aphid preyedtheoretically bY the female and male adult ladybirds were 37.42 and34. 11 aphids.The bestsearching densities of female and male adult ladybirds were 17.25 and 15. 8 aphidsrespectively, The searching effieiency decreased with the increase of predator density,andtlie niathematical models were:E=0.3032P￣(-1. 5634) (female)and E=0.3048P￣(-1. 4694) (male). The mutural interference among individual predators and preys could described by Hasselland vasley's equation:E=0. 8104 * P￣(-2. 2721)(female),E=0.7125* P￣(- 2. 2668) (male),E=0. 5963* P￣(-2. 17521)(female and male).
出处
《华东昆虫学报》
1996年第2期83-87,共5页
Entomological Journal of East China
