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应用生态学报 ›› 1996, Vol. 7 ›› Issue (2): 197-200.

• 研究论文 • 上一篇    下一篇

异色瓢虫若虫对麦三叉蚜的捕食作用

邹运鼎, 耿继光, 陈高潮, 孟庆雷, 王公明   

  1. 安徽农业大学, 合肥230036
  • 收稿日期:1995-07-03 修回日期:1995-10-18 出版日期:1996-04-25 发布日期:1996-04-25
  • 基金资助:

    安徽省自然科学基金;省教委基金资助项目

Predation of Harmonia axyridis nymph on Schizaphis graminum

Zou Yunding, Geng Jiguang, Chen Gaochao, Meng Qinglei, Wang Gongming   

  1. Anhui Agricultural University, Hefei 230036
  • Received:1995-07-03 Revised:1995-10-18 Online:1996-04-25 Published:1996-04-25

摘要: 研究表明,异色瓢虫高龄若虫捕食麦二叉蚜的功能反应为HollingⅡ型反应,喜好捕食低龄若蚜;在40℃下捕食率最低,10℃次之,25℃最高.在10~25℃内捕食率y与温度x的关系为y=28.1303+2.6665x,在25~40℃内为y=199.9275-3.642x;在种内干扰条件下,其捕食作用率E与开敌密度P的关系为E=0.6897P-0.7930,搜索常数Q为0.6897,干扰系数m为0.7930;其分摊竞争强度I与异色瓢虫密度P的关系为I=0.0400+1.0383logP.

关键词: 异色瓢虫, 捕食作用, 种内干扰, 竞争, 短期水分利用效率, 冠层高度, 瞬时水分利用效率, 侧柏林

Abstract: The functional reaction of old Harmonia axyridis nymphs preying on wheat aphides shows the Holling Ⅱ type, i. e., preferring to feed on young aphid nymphs. The predation ratio is the lowest at 40C and the second at 10℃, being the highest at 25℃. At the range of 10~ 25℃, the relationship between predation ratio (y) and temperature (x) is y= 28.1303+ 2.6665x, and at 25~40℃,y=199. 9275 - 3. 642x. Under intraspecific interference, the relationship between predation ratio (E) and natural enemies density (P) is E=0.6897P-0.7930, searching constant Q is 0.6897, disturbing coefficient M is 0.7930.The relationship between intensity of scrambling competition (I) and density of H.axyridis(P) is I= 0.0400+1.0383 logp.

Key words: Harmonia axyridis, Predation, Intraspecific interference, Competition, Platycladus orientalis forest, instantaneous water use efficiency, canopy height, short-term water use efficiency