【摘要】 在Ｎａｋａｍｕｔａ装置中，通过对两种光照条件下（强光照３６８０～４６２０ｌｘ，弱光照１３０～２２０ｌｘ）异色瓢虫若虫搜索麦蚜行为轨迹的研究，得出摄食麦蚜前后０～１５ｓ搜索行为轨迹弯曲角度总和之间差异均显著，摄食后大于摄食前；摄食麦蚜前后０～１５ｓ、１５～３０ｓ、３０～４５ｓ、４５～６０ｓ内的各对应停点间距离差异均显著，摄食前大于摄食后；其搜索速度，摄食前显著大于摄食后。摄食麦蚜前后摄食点到各停点间的直线距离差异均显著，摄食前显著大于摄食后。摄食麦蚜前后０～１５ｓ、０～３０ｓ、０～４５ｓ、０～６０ｓ的领域范围搜索面积，弱光照下摄食前依次是摄食后的３．８７倍，５．０５倍７．５４倍和２．７８倍；强光照下摄食前依次是摄食后的１６．５６倍、６．０２倍、３．８４倍和４．６３倍。摄食前是广域型搜索。摄食后一段时间是地域集中型搜索更多还原

【Abstract】 The area restricted searching behavior of nympha of Harmonia axyridis in response to two light intensities(intensive: 3680～4620 lx, weak: 130～2201 lx)was studied using Nakamuta′s method. The total curvilinear angle of searching trail of the nympha in 15 seconds after feeding was significantly larger than that in 15 seconds, 15～30 seconds, 30～45 seconds before feeding was significantly longer than that between stops in 0～15 seconds, 15～30 seconds and 30～45 seconds after feeding, respectively. The food searching speed of the nympha before feeding was higher than that of the nympha after feeding. The total rectiliner distance from food to stops before feeding were significantly longer than those after feeding. The area restricted searching areas of nympha in 0～15 seconds, 0～30 seconds, 0～45 seconds and 0～60 seconds before feeding were 3.87, 5.05, 7.54 and 2.78 times of that of nympha after feeding, respectively under weak light while under strong light the areas searched in 0～15 seconds, 0～30 seconds, 0～45 seconds and 0～60 seconds before feeding ware 16.56, 6.02, 3.84, and 4.63 times of that of nympha became intensive after feeding.更多还原