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在相同条件下研究了美洲斑潜蝇和南美斑潜蝇实验种群同龄幼虫的种内竞争。结果表明 ,随着 1龄幼虫密度的增加 ,2种斑潜蝇幼虫和蛹的存活率及平均蛹重均逐渐下降 ,但密度对成虫性比无明显影响 ;2种斑潜蝇蛹存活率及雌性比随平均蛹重的增加而增大 ,但最高级别的蛹存活率反而有所下降。比较分析表明 ,在本文实验条件下 ,美洲斑潜蝇幼虫抗拥挤能力较南美斑潜蝇更强
Under the same conditions, the intraspecific competition of Larvae of Liriomyza sativae and L. luria were studied. The results showed that the survival rate and average pupal weight of larvae and pupae of two Liriomyza sativae decreased gradually with the increase of the density of the first instar larvae, but the density had no significant effect on the adult sex ratio. The survival rates of the two larvae The female ratio increased with the increase of average pupal weight, but the pupal survival rate of the highest level decreased instead. Comparative analysis showed that under the experimental conditions of this paper, the anti-crowding ability of L. occidentalis larvae is stronger than that of L. likolensis