CAJ | 학술논문

　　为了对小菜蛾(Plutella xylostella L.)发生为害的种群动态规律提供参考。研究了5种恒温对小菜蛾实验种群的存活、繁殖与寿命的影响。结果表明：在15、20、25、30、35℃的范围内，小菜蛾的产卵前期和历期随着温度的升高而缩短。在35℃高温下，37.5%的小菜蛾雌虫不孕，且正常雌虫的产卵量显著减少，仅为75.7粒/雌，说明持续高温对小菜蛾成虫的产卵是不利的。小菜蛾的繁殖动态也随着温度不同而不同，小菜蛾雌虫的卵峰日都在开始产卵的3日内，累积产卵量达总卵量80%的雌虫日龄随着温度的升高而缩短。小菜蛾雌虫的寿命也随着温度升高而明显缩短，两者呈显著性负相关(r=-0.981，P<0.05)。
　　위료대소채아(Plutella xylostella L.)발생위해적충군동태규률제공삼고。연구료5충항온대소채아실험충군적존활、번식여수명적영향。결과표명：재15、20、25、30、35℃적범위내，소채아적산란전기화력기수착온도적승고이축단。재35℃고온하，37.5%적소채아자충불잉，차정상자충적산란량현저감소，부위75.7립/자，설명지속고온대소채아성충적산란시불리적。소채아적번식동태야수착온도불동이불동，소채아자충적란봉일도재개시산란적3일내，루적산란량체총란량80%적자충일령수착온도적승고이축단。소채아자충적수명야수착온도승고이명현축단，량자정현저성부상관(r=-0.981，P<0.05)。
Oviposition and longevity of the Diamondback Moth, Plutella xylostella L. at 15, 20, 25, 30, 35℃ temperatures were monitored in laboratory experiments. The mean preoviposition and oviposition periods were in negative relation to temperature. The mean number of eggs laid by moth decreased dramatically and 37.5% adult females failed to oviposit at 35℃, compared to other tested temperatures. 80%of total eggs were laid in the first 3 days after the moths beginning to oviposit at each temperature, and the period of time for so many eggs to be laid became shorter with temperature increasing. Longevity of the adult females of the moth decreased from 46.4 days at 15℃ to 3.6 days at 35℃, negatively correlating with temperature (r=-0.981, P<0.05). Based on the above results, patterns of population dynamics of the diamondback moth were discussed.