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应用生态学报 ›› 1999, Vol. 10 ›› Issue (3): 332-334.

• 研究论文 • 上一篇    下一篇

温度对菜蛾绒茧蜂功能反应的影响

施祖华, 刘树生   

  1. 浙江大学植物保护系, 杭州 310029
  • 收稿日期:1997-06-10 修回日期:1997-11-13 出版日期:1999-05-25 发布日期:1999-05-25
  • 通讯作者: 施祖华,男,38岁,副教授,硕士生导师,从事昆虫学研究,已发表论文20多篇.E-mail:zhshi@zjau.edu.cn E-mail:zhshi@zjau.edu.cn
  • 基金资助:

    国家“九五”科技攻关项目;澳大利亚国际农业研究中心(Australian Centre for International Agricultural Research)资助的中澳合作项目

Influence of temperature on functional response of Cotesia plutellae

Shi Zuhua, Liu Shusheng   

  1. Department of Plant Protection, Zhejiang University, Hangzhou 310029
  • Received:1997-06-10 Revised:1997-11-13 Online:1999-05-25 Published:1999-05-25

摘要: 在室内15℃、20℃、25℃、30℃、32.5℃下测定了菜蛾绒茧蜂寄生数量随寄主密度的变化情况。结果表明,在15~32.5℃范围内的各个温度下的功能反应均能用Holing圆盘方程很好地拟合,但各温度间功能反应的参数存在着显着差异。25℃、30℃、32.5℃下的瞬时攻击率比15℃、20℃下显着要高,而处理时间则随温度升高而缩短。各温度下在供寄主的5h内,均有部分雌蜂不产卵寄生小菜蛾幼虫。产卵寄生的雌蜂百分率随温度升高和寄主密度增加而增加.

关键词: 菜蛾绒茧蜂, 小菜蛾, 功能反应, 温度效应, 气体交换, 遮荫, 耐冬山茶, 干旱

Abstract: The functional response of Cotesia plutellae to the increase of larval density of diamondback moth(Plutella xylostella) was examined at indoor temperatures 15℃,20℃,25℃,30℃ and 32.5℃. The results showed that the functional response could be described very well by Holling's disc equation at all test temperatures, but the parameters of the functional response differed significantly. The rates of successful attack at 25℃, 30℃ and 32.5℃ were significantly higher than those at 15℃ and 20℃, and the handling time decreased with increase temperature. After exposed to various densities of DBM 3rd instar larvae for 5 hrs, some females failed to produce eggs to parasitize any larva. The percentage of females which have parasitized at least one DBM larva increased with the increases of both temperature and host density.

Key words: Cotesia plutellae, Plutella xylostella, Functional response, Temperature effect, drought, shading, Camellia japonica (Naidong), gas exchange.