黑肩绿盲蝽对褐飞虱密度变化的功能反应

The functional responses of density change of Crytorrhinus Levidipennis Reter to Nilaparvata Lugens stal

在实验室条件下,初步研究了黑肩绿盲蝽对褐飞虱密度变化的捕食功能反应。结果表明:黑肩绿盲蝽捕食褐飞虱的数量与褐飞虱的密度呈负加速曲线关系,符合Holling-Ⅱ功能反应模型,拟合的圆盘方程为Na= 0.1528N0/(1+0.0024N0)。在试验设计密度范围内,黑肩绿盲蝽的捕食量随褐飞虱密度的增大而增大,当褐飞虱密度增大到一定程度时,捕食量趋于稳定。每捕食1头褐飞虱所需要的时间Th为0.0158d,瞬时的猎物发现率(攻击率)a'为0.1528。

With the laboratory condition, first step studied predatory functional responses of Crytorrhinus Levidipennis Reter prey for Nilaparvata Lugens stal and the density change of Nilaparvata Lugens stal .The result suggest： the quantity of Crytorrhinus Levidipennis Reter prey for Nilaparvata Lugens stal and the density of Nilaparvata Lugens stal present a relation of negative acceleration curve , the results showed that the functional response model belonged to Holling- Ⅱ type .The circle Holling- Ⅱ disk equation is Na= 0.1528N0/（ 1 ＋ 0.0024N0）.Inside the scope of design density of the experiment, the catch appetite of Crytorrhinus Levidipennis Reter enlarge with the enlarge of Nilaparvata Lugens stal density , When the density of Nilaparvata Lugens stal enlarge to certain extent, the quantity prey for food tends to be stability. Each time prey for a Nilaparvata Lugens stal need 0.0158d, The rate of detection bag in a moment is a＇ 0.1528.