摘要
异色瓢虫在自然界中普遍存在，且可捕食多种小型害虫，在生物防治中占有重要位置。本文就异色瓢虫不同龄期幼虫对不同龄期（虫期）桃一点斑叶蝉捕食作用的研究结果，这时以虫治虫工作提供了理论依据。主要结果为：（1）异色飘虫幼虫对桃一点斑叶蝉的功能反应属HollingⅡ型。（2）随着捕食者和猎物年龄的增加，瞬间玫击率增大，处理时间增长。同时干扰常数亦增大。（3）在最适温度范围内，温度升高可促进取食活动。（4）空间的大小不能改变功能反应类型，仅能使参数数值发生变化。（5）异色瓢虫幼虫喜好选择高龄桃一点斑叶蝉若虫捕食。
H.axyridis exisits widely in nature and preys on many kinds of insects.The refore,it plays an important part in biological control.In this paper the predation of different larva stages of H．axyridis on different larva stages of E.sudra was studied．The results showed that：1.the functional reaction of larva H.axyridis to E.sudra tends to Holling's Ⅱ type；2.with larva stages of both predation and its prey developing the instantaneous attack ratio increases，the treating period prolongs and disturbing constant rais es；3.within optional temperature,the feed activity increases as temperature ascends；4．the size of space can not change the type of functional reaction except in parameter value;and 5.H．axyridis larvae prefer to feed on older E.sudra nymphs than young ones．
出处
《生物数学学报》
CSCD
北大核心
1996年第4期196-201,共6页
Journal of Biomathematics
关键词
异色飘虫
桃一点斑叶蝉
捕食功能反应
Harmonia axyridis,Erythroneura sudra,Predation Functional reaction
