束管食螨瓢虫对不均匀分布猎物的捕食行为  

PREDATION BEHAVIOR OF STETHORUS CHENGI SASAJI ON PATCHILY DISTRIBUTION PREYS

作　　者：陈文龙[1] 李隆术[2] 赵志模[2] 朱文炳[2] 

机构地区：[1]上海农学院园林环境科学系,上海201101 [2]西南农业大学植物保护系,重庆630716

出　　处：《上海农学院学报》1993年第3期209-213,共5页

摘　　要：在实验室条件下,束管食螨瓢虫 Stethorus chengi SaSaji 对桔全爪螨 Panonychuscitri McGregor 高密度区域表现出明显的聚集反应.在猎物密度高的小区停留的时间长于在低密度小区内的时间.该捕食者的个体平均搜索能力和个体平均捕食率与其自身密度成负相关.束管食螨瓢虫对猎物的捕食率与猎物密度相关或成逆密度相关,这种现象可能是由聚集强度和干扰强度所引起的.Stethorus chengi SaSaji exhibited a clear aggregative response in laboratory,spending more total time in high prey density paches.There were negative relation between the predator density and average individual searching efficicncy,average individual predatism. Density dependent,density independent and inversely density dependent predatism were mainiy caused by matual interference and aggregation among the predators.

关 键 词：束管食螨瓢虫 捕食性 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]