摘要
通过不同饥饿程度七星瓢虫雌、雄成虫对麦二叉蚜捕食作用的研究，得出：①饥饿不能改变七星瓢虫雌、雄成虫捕食作用的功能反应类型；②七星瓢虫雌、雄成虫间在各种饥饿条件下的捕食量差异均不显著；③七星瓢虫雌、雄成虫对麦二叉蚜的捕食量（Ｎａ）随着时间（ｔ）的变化，其模型分别是Ｎａ＝９０／１＋ｅ０．９４５３４－０．１５７４５ｔ和Ｎａ＝９０／１＋ｅ０．８７２８５－０．１２９８５ｔ；④七星瓢虫雌、雄成虫之间在２４ｈ内的捕食速度（Ｖ）差异不显著，其与时间段（ｘ）关系的模型分别为Ｖ＝８．３５５９ｘ－１．２４６０和Ｖ＝４．３４８７ｘ－０．５９６４。
Coccinella
septempunctata adults on various ranges of starvation preying on Schizaphis graminum
was studied.The results was as follows: (1)The functional reactive types of C.septempunctata
adults on various range of starvation had no difference; (2)The predacious number of
C.septempunctata adults on S.graminum had no difference in various starving conditions;
(3)The predacious number ( Na ) of C.septempunctata adults on S.gramiunum had a
variation with time ( t )as shown in the models: Na =90/(1-e 94534-0 15745 t )and Na
=90/(1-e 0 87285-0 12985 t )respectively; (4)The predacious rate ( V ) of
C.septempunctata adults on S.graminum had no significance difference in 24 hours,the
models on the relationship between predacious number and time ( x ) shown as: V =8 3559
x -1 2460 and V =4 3487 x -0 5964 ,respectively.
出处
《生态学报》
CAS
CSCD
北大核心
1999年第1期113-117,共5页
Acta Ecologica Sinica
基金
安徽省自然科学基金
关键词
饥饿
七星瓢虫
雌雄成虫
捕食作用
starvation, Coccinella
septempunctata, predation.
