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目的 观察比较丝光绿蝇不同饲养方法和不同世代蛹重及其随采蛹发育天数的变化关系 ,并建立丝光绿蝇蛹期发育的数学模型。方法 用两种幼虫饲料分别对丝光绿蝇进行室内连续饲养 ,分别对两组其中的第 4和第 5代蝇蛹进行连续测重 ,采用SPSS8.0统计软件对数据进行统计分析和曲线拟合。结果 丝光绿蝇采用幼虫饲料Ⅰ饲养的室内第 4代、第 5代蛹初重分别显著性大于幼虫饲料Ⅱ饲养的室内第 4代、第 5代蛹初重 ,而不同代的差异无统计学显著性意义。各组蛹重均随蛹发育天数增加而下降 ,头两天蛹重急剧下降 ,后几天蛹重减少趋于平缓 ,不同发育天数的平均蛹重与三次曲线模型的拟合效果最佳。结论 丝光绿蝇采用幼虫饲料Ⅰ室内饲养效果可能好于幼虫饲料Ⅱ ,而幼虫饲料对丝光绿蝇室内饲养后期的各代间蛹重无显著性影响 ,三次曲线回归方程 :y =0 0 2 842 1- 0 0 0 2 496t+0 0 0 0 75 1t2 - 0 0 0 0 0 79t3 可能反映了平均蛹重 (Y)与发育天数 (t)的函数关系。
Objective To observe and compare the relationship between different feeding methods and the weight of pupae of different generations and the development days of pupae, and to establish the mathematical model of the development of Lucilia sericata at pupal stage. Methods Two kinds of larvae diets were used to feed Lucilia sericata continuously in the laboratory respectively. The 4th and 5th generations of pupae were continuously weighed in two groups. Statistical analysis and curve fitting were carried out using SPSS 8.0 statistical software . Results The first and fifth instar pupae fed with larvae feedⅠwere significantly higher than the fourth and fifth instar pupae fed with larvae feed Ⅱ, but the differences between different generations were not statistically significant significance. The pupal weight of each group decreased with the increase of pupa development days, and the pupal weight dropped sharply in the first two days. After a few days, the pupal weight tended to be gentle. The average pupa weight of different developmental days was the best fitting the cubic curve model. Conclusion The larvae feeding Ⅰ may be better than the larvae feeding Ⅱ in larval feeding Ⅰ. However, the larval feeding has no significant effect on the pupal weight of the larvae at the later stage of indoor feeding. The regression equation of cubic curve: y = 0 0 2 842 1- 0 0 0 2 496t + 0 0 0 0 75 1t2 - 0 0 0 0 0 79t3 may reflect the functional relationship between mean pupal weight (Y) and days of development (t).