不同食物对甜菜夜蛾生长发育参数的影响
Effects of different host plants on development of Spodoptera exigua
滕海媛 王冬生 史苹香 袁永达 张天澍
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作者单位：上海市农业科学院生态环境保护研究所上海市设施园艺技术重点实验室上海201403
中文关键词：甜菜夜蛾，寄主植物，生长发育，存活率，繁殖力，内禀增长率
英文关键词： Spodoptera exigua，host plant，growth and development，survival rate，intrinsic rate of increase
中文摘要：选择上海地区近年甜菜夜蛾Spodoptera exigua(Hübner)发生比较严重的甘蓝、豇豆、大葱、芦笋4 种寄主
植物，在温度(27 ± 1) ℃，相对湿度70% ± 5% ，光照L∶ D = 14∶ 10 的条件下研究了不同寄主植物对甜菜夜蛾发育
特征的影响。结果表明，不同寄主植物饲喂甜菜夜蛾，甜菜夜蛾幼虫发育历期、存活率、蛹重、成虫寿命、净生殖力
和内禀增长率等参数在寄主植物间有显著差异。用甘蓝饲喂的甜菜夜蛾雌虫产卵量明显高于取食大葱和芦笋
的。同样，取食甘蓝的甜菜夜蛾蛹重、净生殖力和种群内禀增长率等参数明显高于取食大葱和芦笋的，说明甘蓝
与其他寄主植物相比提供了较好质量的食物。
英文摘要：In recent years beet armyworm Spodoptera exigua( Hübner) has seriously infested crops of cabbage，cowpea，
scallion and asparagus in the Shanghai area． The impact of host plant selection on development of S． exigua were
investigated in the laboratory at (27 ± 1)℃，RH 70% ± 5% ，and photoperiod of L∶ D = 14 ∶ 10． The results revealed
significant differences between host plants in duration of larval development，larval survival rate，pupal weight，adult
longevity，adult eclosion，the intrinsic rate of increase and net reproduction rate． The mean number of eggs laid by females
reared on cabbage was significantly greater than for those reared on scallion or asparagus． Similarly，pupal weight，adult
eclosion，the intrinsic rate of increase，and net reproduction rate were significantly higher on cabbage than on scallion and
asparagus． The results suggest that cabbage provides better food quality for beet armyworm than other host plants．