Abstract:

Objective　To clarify the geographical distribution of Aedes albopictus in the Yangtze River basin in Gansu province. Methods　Curtain traps, mosquito suction tubes and electric suction devices were used to capture blood?sucking female mosquitoes resting on the human body. Insect?catching nets were used to capture male mosquitoes. Results　Liangdang county, Hui county, Cheng county, Xihe county, Li county, Kang county and Wudu district in the Yangtze River region in Gansu province were investigated. Ae. albopictus were found in Liangdang county, Hui county and Cheng county. A total of 49 breeding habitats for various species were investigated, eight of which were identified as the ones for Ae. albopictus, accounting for 16.33%. These breeding habitats were mostly scrap tire recovery and processing plants. Conclusion　The newly recorded geographical distribution of Ae. albopictus in the Yangtze River region in Gansu province provided the key evidence for the northwest ward expanding boundary of Ae. albopictus in China.

Key words: Yangtze River basin, Aedes albopictus, Geographical distribution, Gansu

摘要：

目的　了解甘肃省长江流域地区登革热媒介白纹伊蚊地理分布情况。方法　采用人诱法，用口吸吸蚊管、电动吸蚊器捕捉停落在人体上吸血的雌蚊，采用捕虫网捕捉雄蚊。结果　在甘肃省长江流域调查两当县、徽县、成县、西和县、礼县、康县和武都区，其中两当县、徽县、成县、康县发现有白纹伊蚊孳生，其他县未发现。调查各类孳生生境49个，有白纹伊蚊孳生的8个，占16.33%，孳生生境以废旧轮胎收购加工厂为主。结论　对甘肃省长江流域地区登革热媒介白纹伊蚊地理分布调查，为我国白纹伊蚊西北界限的重新划分提供了依据。

关键词: 长江流域, 白纹伊蚊, 地理分布, 甘肃