南京农业大学学报2012，Vol.35Issue(3)：78-82,5.
野外环境中斑痣悬茧蜂的产卵选择行为
Oviposition selection behavior of Meteorus pulchricornis ( Hymenoptera: Braconidae) in the field
摘要
Abstract
To understand the association between host density and parasitoid host-foraging behavior, a release-recapture trial was conducted in the soybean field by using Spodoptera litura larvae and its solitary parasitoid Meteorus pulchricornis (Westmael). The results showed that the dependence of parasitism on host density was not constant,but hinged upon the host density threshold( =8 larvae/plant), below which parasitism rate decreased with hosl density while beyond which it remained at about 50%. The analysis using the hurdle model indicated that the probability of single parasitism declined with host body size(body weight) but the extent of superparasitism,as measured by the number of eggs in a host,did not varied with host body size;superparasitism rate was as high as 23.9%. The study suggested that M. pulchricornis might randomly forage on plants, making use of host body size as the cue at single parasitism but not at superparasitism.关键词
过寄生/寄主大小/搜寻行为/密度依赖/寄生蜂Key words
superparasitism/host body size/foraging behavior/density dependence/parasitoid分类
农业科技引用本文复制引用
张博,孟玲,李保平..野外环境中斑痣悬茧蜂的产卵选择行为[J].南京农业大学学报,2012,35(3):78-82,5.基金项目
国家自然科学基金项目(30871670) （30871670）
国家公益性行业(农业)科研专项(201103032) （农业）
