禽畜粪对家蝇生长发育的影响

目的研究禽畜粪对家蝇生长发育的影响。方法用禽畜粪饲养家蝇幼虫，观察幼虫发育历期、蛹重、羽化率。结果在不同禽畜粪饲养下，鸡粪的蛹最重，为0．032g，羽化率、幼虫历期分别为70％、7．4d。其中蛹重、幼虫发育历期与猪粪、牛粪间差异无统计学意义，但羽化率差异有统计学意义（P=0．022）。随着饲养密度、禽畜粪高度增加，家蝇幼虫发育历期延长。在不同幼虫密度、禽畜粪高度条件下，家蝇蛹期有差异；蛹重随着化蛹时间的延长呈下降趋势；不同密度下禽畜粪的蛹重之间差异均无统计学意义，但羽化率受到影响。同样，羽化率随着禽畜粪高度增加而降低。结论应用禽畜粪饲养家蝇幼虫，在30℃下鸡粪为饲料，高度为4～6cm其生长条件最优。

Effect of animal dung on the growing development of house fly (Musca domestica)

Objective To study effect of animal dung on the growing development of Musca domestica. Methods M.domestica larvae were reared with animal dung, development period of M.domestica larvae, pupae weight and emergence rate were recorded. Results The weight of M.domestica pupae rearing with chicken dung was the heaviest, about 0.032 g, and the emergence rate and the larva development time were 70% and 7.4 days, respectively. There was no significant difference for pupae weight and larva development time between chicken dung and other dung, but significant difference in the emergence rate （P=0.022）. The larva development time prolonged with the increase of rearing density of M.domestica larvae and height of animal dung. There were different among pupae periods, and the pupal weights decreased with the increase of the time of pupation under the condition of different larvae densities and animal dung height. There was no significant difference in the pupal weights reared with different animal dung at different larvae densities, but the emergence rate of housefly adult was affected. The same as pupae weight, the emergence rate decreased with the increase of the animal dung height. Conclusion The optimization conditions of M.domestica larvae was reared with chicken dung at 30 ℃ and 4-6 em height.