为了进一步论证晚秋杀灭末代幼虫是控制淡色库蚊虫源的重要性,以及这一措施的可行性,自12月中旬至次年3月中旬,按旬捕捉自然界的淡色库蚊解剖,观察滞育越冬蚊在上海地区冬季各旬的比例。 指标:滞育蚊:卵巢小,胃小,第一卵泡停滞在N期,第一卵泡与原卵区(第二卵泡和第三卵泡)几平等长。未经产发育蚊;卵巢微气管末端卷曲, In order to further demonstrate the importance of killing the last adult larvae in the late autumn to control the source of mosquitoes, and the feasibility of this measure, from mid-December to mid-March of the following year, Overwintering mosquito in Shanghai in winter proportion of ten days. Indicators: Diapause mosquitoes: small ovarian, small stomach, the first follicle stagnated in the N phase, the first follicle and the original egg (second and third follicles) a few equal length. Unproductive mosquito; end of ovarian micro-tube curl,