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在(25±1)℃条件下比较了5种寄主植物上瓜蚜实验种群生命表参数.结果表明:在不同寄主植物上,瓜蚜各龄历期、成蚜寿命、日均产仔量、净增殖率、内禀增长率、周限增长率、平均世代历期和种群加倍时间等均存在显著差异.瓜蚜完成1代所需时间在瓢葫芦上最长,为5.84 d,其他4种供试植物上差异不显著(5.24～5.45 d).成蚜寿命在黄瓜上最长,为20.04 d,其他4种供试植物上差异不显著(14.76～16.03 d).瓜蚜种群存活曲线在所有供试寄主植物上均为Ⅰ型,即死亡主要发生在后期,而且在黄瓜上的存活率高于其他4种供试植物.根据瓜蚜内禀增长率大小排序,寄主适合性依次为哈密瓜>瓢葫芦>南瓜>黄瓜>茭瓜.
The life table parameters of the experimental population on five host plants were compared at (25 ± 1) ℃. The results showed that on different host plants, the annual life span, the average number of litter size, Net reproduction rate, intrinsic rate of increase, the rate of growth of the limit, the average generation period and population doubling time are significant differences.Aphis gossypii to complete the first generation of the longest in the calabash gourd, 5.84 d, the other four There was no significant difference in the tested plants (5.24-5.45 d). The longest lifespan of adult aphids was 20.04 days in cucumber, while the other four tested plants had no significant difference (14.76-16.03 days) All the tested host plants were type I, that is, the death occurred mainly in the later period, and the survival rate in cucumber was higher than that in the other four kinds of tested plants.According to the order of the intrinsic rate of increase of the melon aphids, the host adaptability was Hami melon > Calabash> Pumpkin> Cucumber> Gourd.