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应用生态学报 ›› 2003, Vol. ›› Issue (10): 1732-1734.

• 研究报告 • 上一篇    下一篇

十字花科蔬菜对小菜蛾实验种群的影响

吕利华1, 何余容2, 庞雄飞2   

  1. 1. 广东省农业科学院植物保护所, 广州 510640;
    2. 华南农业大学昆虫生态室, 广州 510642
  • 收稿日期:2001-09-24 修回日期:2002-08-04
  • 通讯作者: 吕利华,男,1963年生,博士,副研究员,主要从事昆虫生态和害虫生物防治研究,已发表论文20多篇.E-mail:lhlu@gdppri.com.
  • 基金资助:
    国家自然科学基金重点资助项目(39930120)

Effects of cruciferous vegetables on experimental population of diamondback moth Plutella xylostella

LU Lihua1, HE Yurong2, PANG Xiongfei 2   

  1. 1. Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. Laboratory of Insect Ecology, South China Agricultural University, Guangzhou 510642, China
  • Received:2001-09-24 Revised:2002-08-04

摘要: 通过组建4种十字花科蔬菜上小菜蛾实验种群生命表发现,在菜心、芥蓝、芥菜和小白菜4种蔬菜上繁殖的小菜蛾实验种群增长趋势指数分别为41.0、69.5、38.2、52.4,影响种群增长的重要因子为幼虫的自然死亡,不同蔬菜种类对小菜蛾雌蛾的总产卵量和寿命无影响,但芥蓝繁殖的小菜蛾日平均产卵量显著高于其它几种蔬菜.在芥蓝和小白菜上繁殖的小菜蛾幼虫具有较高的存活概率。是其种群具有较大增长潜力的重要原因.试验结果表明。在4种蔬菜中,芥蓝提供的营养最适宜于小菜蛾种群生长、发育和繁殖,是最佳的寄主,其次为小白菜、菜心,而芥菜尽管被报道为小菜蛾成虫最喜欢产卵的寄主,由于所繁殖的小菜蛾种群在幼虫期有较高的死亡率,是最不适宜于小菜蛾生长发育的寄主.

关键词: 小菜蛾, 十字花科蔬菜, 实验种群生命表

Abstract: The impact of four species of cruciferous vegetables on the experimental population of diamondback moth (DBM) Plutella xylastella was evaluated in the laboratory.The results showed that there was no significant difference in total fecundity and longevity of DBMfemale moths reared on different crucifers.The population increase index of DBM reared on flowering Chinese cabbage, Chinese kale, leaf mustard, and pak-choi was 41.0, 69.5, 38.2 and 52.4, respectively, and the natural death at larvae stage was the most important factor influencing the population increase of DBM.The relatively lower natural death rates of larvae on Chinese kale and pak-choi contributed a higher increasing potential of DBM populations.It was concluded that among four species crucifers, Chinese kale could provide the most suitable nutrients for the development and reproduction of DBM population, and thus, it was considered as the best host of DBM.However, although leaf mustard has been reported as one of the most preferable host for DBM adult oviposition, it was not as better as three other crucifers for DBM development due to the higher natural death rate of larvae.

Key words: Plutelia zylostella, Cruciferous vegetable, Experimental population life table

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