Abstract:

Objective To observe the effect of different temperature on the different development stages and fecundity of Culex pipiens pallens thus to evaluate the transmission capacity during the epidemic season, in order to provide a theoretic foundation for mosquito control. Methods The changes at different development stages of mosquitoes(eggs, larvae, pupae) and gonotrophic cycle were observed at different temperatures at 10, 15, 20, 25, 30, 35, 40℃. The full developmental cycles were compared within different temperatures. Results All the stages of the mosquitoes were unable to grow at 40℃; the mosquitoes developed at 10, 15, 20, 25, 30, and 35℃, the development time were 80.87, 46.33, 31.07, 24.94, 17.11, and 14.41 d respectively. Conclusion The development time of Cx. pipiens pallens was shorter at higher temperatures. The optimal temperature for the mosquitoes to develop was between 25-30℃, higher or lower temperature suppressed the development of the mosquitoes.

Key words: Culex pipiens pallens, Developmental cycle, Temperature, Vector

摘要：

目的 观察淡色库蚊在不同温度下各虫期发育与繁殖情况，探讨淡色库蚊传播疾病的有效季节，为适时有效地防制蚊虫传染病提供重要的理论依据。方法 将温度设为10、15、20、25、30、35、40℃ 7个组，在湿度同为（75±5）%的条件下，观察实验室饲养的淡色库蚊卵期、幼虫、蛹期和生殖营养周期变化情况，比较不同温度下各虫期的全发育时期。结果 温度在40℃时，淡色库蚊各虫期均不能发育，在10、15、20、25、30和35℃ 6个温度组蚊虫各期均可发育，其发育时间分别为80.87、46.33、31.07、24.94、17.11和14.41 d。结论 淡色库蚊的发育周期随着温度升高而缩短，最适宜发育温度为25~30℃，温度过高或过低均对蚊虫发育有抑制作用。

关键词: 淡色库蚊, 发育周期, 温度, 媒介