自然界郑州中华按蚊种群数量变动规律

目的：探讨自然界内郑州中华按蚊种群数量变动规律。方法：在自然界内用自创的实验筒、实验网和接近自然状况的大实验笼等工具，定点定量调查研究。结果：求出成蚊前期发育历期：7月份为14．17d，8月份为13．32 d；存活率：7月份为77．53％，8月份为85．18％；生殖营养周期：7月份为2．48 d，8月份为2．49d；产卵规律：该蚊多数在夜间产卵，产卵高峰出现在黄昏后和黎明前；平均产卵量：7月份为167粒，8月份为121粒；平均成蚊寿命：7月份为3．93 d，8月份为6．23 d。结论：郑州中华按蚊在当地6月下旬和8月下旬各出现一次密度高峰，自然种群数量大，传疟潜势高。

The pattern of quantitative alteration of natural Anopheles sinensis popula-tion in Zhengzhou

Aim: To probe the pattern of quantitative alteration of natmal Anopheles sinensis population in Zhengzhou. Meth-ods: Investigating at fixed place and quantitatively by using experimental barrels, experimental nets and experimental cages in na-ture. Results: The growth period of pre-adult stage was 14.17 d for July and 13.32 d for August, the survival rate was 77.53%for July and 85.18% for August, the gonotrophic cycle was 2.48 d for July and 2.49 d for August, the pattern of oviposition wasthat the most female mosquitoes ovipesited at night and the peak of oviposition appeared at dawn and dusk, the mean number ofovipesition was 167 for July and 121 for August, the mean life span of adult mosquito was 3.93 d for July and 6.23 d for August.Conclusion: The density peak of Anopheles sinensis population in Zhengzhou appear at the last ten days of July and August, re-spectively. The number of natural population was great, and the potential capacity of malaria trasmission is high.