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30℃下采用苦瓜、黄瓜、丝瓜饲养的瓜实蝇的发育历期分别为44.82、43.12、46.08 d,幼虫、蛹、世代历期、雄成虫寿命差异显著;平均每雌产卵量分别为878.41、895.65、806.35个,差异显著;采用苦瓜、黄瓜、丝瓜饲养的瓜实蝇实验种群的种群趋势指数(I)分别为228.39、268.70、201.59,净生殖率(R0)分别为59.2532、94.0800、48.9910,差异显著;其它生命表参数差异不显著;周限增长率(λ)均大于1,说明瓜实蝇的种群为正增长.
The developmental stages of melon fly fed with bitter gourd, cucumber and sponge gourd at 30 ℃ were 44.82,43.12 and 46.08 d, respectively. The larvae, pupae, generational life and male adult had significant differences in their longevity. The average fecundity per female was 878.41 , 895.65 and 806.35, respectively. The population trend index (I) of experimental population of melon flies fed on bitter gourd, cucumber and sponge gourd were 228.39,268.70,201.59 and net reproductive rate (R0) were 59.2532, 94.0800 and 48.9910 , The difference was significant; the other life table parameters were not significantly different; the growth rate of the cycle (λ) was greater than 1, indicating that the fruit fly population was positive growth.