不同寄主植物对美洲斑潜蝇种群参数的影响

在温度为25℃的实验条件下,测定了四季豆(红花架豆和红花地豆)、长豇豆和黄瓜等寄主对美洲斑潜蝇种群参数的影响。结果表明,除卵历期外,美洲斑潜蝇幼虫、蛹、卵-蛹历期、雌成虫寿命和生殖力在四季豆、长豇豆和黄瓜3种寄主植物上均存在极显著的差异(p<0.01),而在四季豆的两个不同品种上差异不显著(p>0.05)。美洲斑潜蝇在选择性强的四季豆上发育历期最短,化蛹率最高,雌成虫寿命最长、生殖力最高;在选择性差的黄瓜上发育历期最长,化蛹率最低,雌成虫寿命最短,生殖力最低。孵化率、羽化率和成虫性比在供试寄主间差异很小。

Effects of different host plants on population parameters of Liriomyza sativae

The population parameters of the vegetable leafminer Liriomyza sativae on 4 different host plants were tested at 25 in the laboratory. The results showed that the developmental duration of larvae and pupa, longevity and fecundity of female adults were significantly different (p<0.01) between the populations of L. sativae on kidney bean, cowpea and cucumber, but the egg developmental duration was not significantly different (p>0.05) between the populations of L. sativae on two varieties of kidney bean. The shortest developmental duration, highest pupation rate, longest longevity and highest fecundity of female adults were observed in the populations on the most preferred kidney beans, and vice versa for the populations on the least preferred cucumbers. Little difference was found in the incubation rate, eclosion rate and sex ratio of the populations on different host plants.