THE EFFECT OF WATER TEMPERATURE ON THE FUNCTIONAL-RESPONSE OF THE WATER STICK INSECT RANATRA-DISPAR (HETEROPTERA, NEPIDAE)
THE EFFECT OF WATER TEMPERATURE ON THE FUNCTIONAL-RESPONSE OF THE WATER STICK INSECT RANATRA-DISPAR (HETEROPTERA, NEPIDAE)
复制标题
DOI：
10.1111/j.1442-9993.1989.tb01448.x
复制
发表时间：
1989-12-01
期刊：
影响因子：
--
通讯作者：
BAILEY, PCE
中科院分区：
文献类型：
--
作者：
BAILEY, PCE
在15℃、20℃、25℃和30℃条件下，分别对4种不同密度的被捕食物进行摄食，构建了功能响应曲线。攻击率和处理时间的值由罗杰的随机捕食者方程估计。最普遍适用的反应是II型，即随着温度的升高，猎物的平均食用量增加。攻击率与温度呈线性关系，处理时间随温度的升高呈指数下降，但在20 ~ 30℃之间变化不大。据认为，代谢活动的变化和对捕食行为各组成部分的相关“饥饿”效应解释了在25摄氏度以下观察到的猎物被吃掉的数量，然而，在30摄氏度时猎物活动水平的增加可能会影响在这个更高温度下捕获（和吃掉）的猎物的观察数量。
Functional response curves were constructed for adult Ranatra dispar feeding on four different densities of notonectid prey at 15, 20, 25 and 30.degree.C. Values for the attack-rate and handling time were estimated from Roger''s random predator equation. The most generally applicable response was the type II, with the mean number of prey eaten increasing with increase in temperature. The attack-rate was linearly related to temperature while handling time decreased exponentially with increase in temperature, although values changed very little between 20 and 30.degree.C. It is suggested that changes in metabolic activity and related ''hunger'' effects on various components of predatory behaviour account for the observed number of prey eaten up to 25.degree.C, however, an increase in the level of prey activity at 30.degree.C may influence the observed number of prey caught (and eaten) at this higher temperature.