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目的调查掌握上海市金山区越冬蚊虫的种类、密度及分布情况。方法 2013年12月上旬至2014年3月下旬,选择越冬蚊虫主要栖息场所,每旬1次,采用目测法估算越冬蚊虫密度,并使用电动吸蚊器捕捉成蚊带回实验室解剖,观察卵巢发育情况。结果连续12次调查共捕获成蚊2 165只,均为淡色库蚊;在整个越冬期间,蚊虫活动状态经历了“骚扰即飞——触之能飞——触之能爬行——触之肢体可动——触之能爬行——触之即飞——骚扰即飞”的变化规律;其中配电房和垃圾房的越冬蚊虫较多,公共厕所最少;调查发现1月上旬雄蚊开始消失,3月中旬重新出现,2月中旬雌蚊体内脂肪体累积骤减,3月下旬消失,3月上旬开始捕捉到吸血雌蚊和卵巢发育的雌蚊。结论上海市金山区淡色库蚊以成蚊方式越冬。
Objective To investigate the species, density and distribution of overwintering mosquitoes in Jinshan District of Shanghai. Methods From early December 2013 to late March 2014, the main habitat of overwintering mosquitoes was selected, once every ten days. The mosquito density of overwintering mosquitoes was estimated by visual inspection method. Development. Results A total of 2 165 adult mosquitoes were captured in 12 consecutive surveys, all of which were Culex pipiens pallens. During the whole winter, the mosquito’s activities experienced “harassment that fly - touch the fly - touch can crawl - touch Limbs moveable - can touch the fly - touch that is fly - harassment that fly ”changes; which distribution room and garbage room overwintering mosquitoes, public toilets at least; survey found that in early January male mosquito Began to disappear, reappeared in mid-March, mid-February females body fat body plummeted, disappeared in late March, beginning in early March to capture the vampire-females and ovaries development of female mosquitoes. Conclusion Culex pipiens pallens overwintering in mosquitoes in Jinshan District of Shanghai.