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东亚小花蝽若虫对大豆蚜捕食功能的研究

韩岚岚, 董天宇, 赵奎军, 朱明贺, 孙文鹏, 徐忠新, 石磊   

  1. 东北农业大学农学院, 哈尔滨 150030
  • 收稿日期:2014-05-28 修回日期:1900-01-01 出版日期:2015-06-08 发布日期:2015-06-08
  • 通讯作者: 赵奎军

Predation of Aphis glycines by Orius sauteri Nymphs

HAN Lanlan, DONG Tianyu, ZHAO Kuijun, ZHU Minghe, SUN Wenpeng, XU Zhongxin, SHI Lei   

  1. College of Agriculture, Northeast Agricultural University, Harbin 150030, China
  • Received:2014-05-28 Revised:1900-01-01 Online:2015-06-08 Published:2015-06-08

摘要: 本文研究了东亚小花蝽4~5龄若虫捕食大豆蚜的功能反应和寻找效应.结果表明,在供试温度下其捕食功能反应符合Holling II型方程.在相同温度下,东亚小花蝽4~5龄若虫的捕食量随着猎物密度的增加而增大,搜寻效应随着猎物密度的增加而降低.在18~26 ℃,随着温度的升高,东亚小花蝽4~5龄若虫对大豆蚜的捕食量增加,而在26~34 ℃则有相反的趋势.在相同猎物密度条件下,随着东亚小花蝽4~5龄若虫密度的增大,其平均捕食量逐渐减少,捕食作用率E也相应地降低,捕食作用率E与东亚小花蝽4~5龄若虫密度P的关系为E=0.1249 P-0.1776,分摊竞争强度I与东亚小花蝽4~5龄若虫密度P的关系为I=0.3526 lgP+0.0152.

Abstract: Functional response and searching rate of Orius sauteri 4—5th instar to Aphis glycines were studied. The functional response could be described by Holling II at all tested temperatures. At a certain temperature, predation capacity of O. sauteri 4—5th instar increased while searching rate decreased with the increase in density of A. glycines. Predation capacity of O. sauteri 4—5th instar increased with the increase of temperature from 18 to 26 ℃ and then decreased from 26 to 34 ℃. At a certain prey density, predation capacity and predation ratio of O. sauteri 4—5th instar decreased with the increase in its own density. The relationship between predation ratio (E) and density of O. sauteri 4—5th instar (P) was described by equation of E=0.1249P-0.1776, and the relationship between intensity of scrambling competition (I) and the density of O. sauteri adults (P) was I=0. 3526 logP+0.0152.

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