【摘要】 对不同饥饿程度大草蛉雄成虫捕食作用影响的研究表明 ,饥饿不能改变大草蛉雄成虫捕食作用功能反应类型 ,饥饿对捕食量影响不显著 ;大草蛉雄成虫对麦二叉蚜的捕食量 (Na)随着时间 (t)的变化 ,其模型为Na =10 0 / 1+e-0 .3 0 88-0 .0 996t;大草蛉雄成虫在 2 4h内的捕食速率 (V )与其时间段 (x)的关系为V =6 .7117x-0 .792 8;大草蛉雄成虫喜好选择捕食麦二叉蚜的低龄若蚜 .更多还原

【Abstract】 The predation on Schizaphis graminum by male adult Chrysopa septempunctatata at various levels of starvation was examined in this paper.Th results showed that the functional reactive types of predator were not altered by its starvation duration,and the amount( Na ) of catched S.graminum by C.septempunctata wihin 24hrs varied with duration time(t),which could be expressed by the model: Na=100/(1+e -0 3088-0 0996t ).The relationship between predation rate( v ) and time( x ) could be described as v=6\^7117x -0\^7928 .The male adult predators preferred feeding on the young preys.更多还原