东乡伊蚊幼虫的野外孳生习性及安备对其防制效果观察

目的 观察东乡伊蚊幼虫的野外孳生习性，为制定防制对策提供依据。方法 每月2次定点、定人、定量捞取幼虫进行各龄期分类计数，同时进行实验室饲养观察以进行种类鉴定，用安备1％杀孑孓颗粒剂2g／m^2进行现场防制试验。结果 东乡伊蚊幼虫在海边岩石孳生环境中一年四季均见孳生，4～5月幼虫密度达高峰，并能持续发生到11月上甸；投安备后20h水体中幼虫全部死亡，且30d后该水体才出现幼虫孳生。结论 海滨岩石坑洼是东乡伊蚊孳生的一个适宜场所，温度适宜时可以大发生。安备对其有较好的控制作用。雨后及时发现新的孳生水体并进行有效防制是关键。

Observation on the Breeding Charcateristic of Aedes togoi and Control Efficacy of ANBEI in Field

Objective To observe the growth and development of Aedes togoi in field and provide basis information for its control. Methods Ae. togoi larvae were collected and counted twice a month from the accumulated water on the seashore by fixed-places, fixed-observer and fixed-time. The obtained larvae were reared in laboratory for adults for species identification. The effect of 1% ANBEI on the mosquito larvae control was studied at rate of 2 g/m^2 . Results Ae. togoi can developed in accumulated water in the rocks on the seashore in Qingdao all year along with a peak from Apr. to May. Since 20 h after application of ANBEI at a rate of 2 g/m^2 , all the larvae were died, the effect could last for 30 d. Conclusion Accumulated water in the rocks on the seashore in Qingdao was the suitable place for Ae. togoi breeding. ANBEI has a good effect on Ae. togoi control.