黑瞎子岛蚊虫种群动态研究

Study on population dynamics of mosquitoes on Heixiazi Island, China

目的调查黑龙江省抚远县黑瞎子岛蚊虫种群组成,主要种群的昼夜数量动态。方法采用人帐诱、诱虫灯和网捕法采集蚊虫。结果在黑瞎子岛捕获蚊虫33526只,计4属10种,优势种群为刺扰伊蚊(94.68%)。不同月份蚊种组成有所不同;4种主要蚊种昼夜24h的数量动态观察结果表明,刺扰伊蚊活动时间在00:00-24:00,叮刺伊蚊在03:00-21:00,凶小库蚊在06:00-20:00,中华按蚊在19:00-03:00;刺扰伊蚊在03:00和20:00出现2次高峰;凶小库蚊在17:00、叮刺伊蚊在18:00、中华按蚊在21:00仅出现1次高峰。结论黑龙江省黑瞎子岛的蚊种包括4属10种;刺扰伊蚊为优势种群;观察了4个主要种群的昼夜数量动态。

Objective To investigate the species composition of mosquitoes and the diurnal variations in numbers of dominant species of mosquitoes on the Heixiazi Island in Fuyuan county, Heilongjiang province, China. Methods Mosquitoes were collected using the human baited net trap, light trap, and insect net. Results A total of 33 526 mosquitoes belonging to 4 genera and 10 species were collected on the Heixiazi Island. The dominant species was Aedes vexans （94.68%）. The species composition varied in different months. The diurnal variations in numbers of 4 dominant species of mosquitoes were as follows： Ae. vexans was active in a whole day, Ae. sticticus during the 3rd to 21st hour of day, Culex modestus during the 6th to 20th hour, and Anopheles sinensis during the 3rd to 19th hour; the activity peak occurred at the 3rd and 20th hours for Ae. vexans, at the 17th hour for Cx. modestus, at the 18th hour for Ae. sticticus, and at the 21st hour for An. sinensis. Conclusion The mosquitoes on the Heixiazi Island were composed of 4 genera and 10 species, and the dominant species was Aedes vexans, and the diurnal variation number of the four dominant species was observed.