东亚小花蝽对西花蓟马、二斑叶螨和桃蚜的捕食能力及捕食选择性研究  

Research on predation capacity and preference of Orius sauteri against western flower thrips(Frankliniella occidentalis),two-spotted spider mite(Tetranychus urticae) and peach aphid(Myzus persicae)

作　　者：尹哲 李金萍 董民[2] 侯峥嵘 孙贝贝 郭喜红 

机构地区：[1]北京市植物保护站,北京100029 [2]中国农业大学植物保护学院,北京100193

出　　处：《中国植保导刊》2017年第8期17-19,共3页China Plant Protection

摘　　要：室内研究了东亚小花蝽对西花蓟马、二斑叶螨和桃蚜的捕食能力及在3种害虫共存条件下的捕食选择性。试验结果表明,东亚小花蝽对西花蓟马、二斑叶螨和桃蚜均具有捕食能力。捕食能力最初随着猎物数量的增加而增加,当猎物数量不断增加时,其捕食量趋于恒定值。在猎物数量充足时,东亚小花蝽对于二斑叶螨、蚜虫和蓟马的日均捕食量分别为17、12.5头和12头。3种猎物共存时,东亚小花蝽对西方花蓟马的捕食选择性均强于对二斑叶螨和桃蚜。选择性依次为西方花蓟马>桃蚜≈二斑叶螨。猎物数量相同时取食西花蓟马的数量为12.6头,二斑叶螨和桃蚜的数量分别1.2头和2.4头。Predation capacity of Orius sauteri against western flower thrips （Frankliniella occidentalis ）, two-spotted spider mite （Tetranychus urticae） and peach aphid （Myzus persicae）, and predation preference among the pests of 0. sauteri were studied in lab. The results showed that 0. sauteri had predation capacity against those three pests, and its predation capacity increased with pests increasing until a constant level. At condition of abundant pests supply, predation numbers of those three pests were 17, 12.5 and 12, respectively. Among those three pests, O. sauteri preferred to western flower thrips, and the preference to two-spotted spider mite and peach aphid were similar and less than that of western flower thrips, as predation number were 12.6, 1.2 and 2.4 respectively, with the same number of prey supplement.

关 键 词：东亚小花蝽 捕食能力 捕食选择性 

分 类 号：S433.3[农业科学—农业昆虫与害虫防治]