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目的了解内江市城区范围内不同生境蚊虫的发生密度和种类,掌握其发生规律,为防治提供依据。方法使用诱蚊灯法对内江城区不同生境各监测点的蚊类进行监测,对收集的蚊虫样品进行分类鉴定和统计分析。结果 3年共捕获成蚊23 212只,2011-2013年蚊密度分别为36.83、35.33、72.92只/(灯·夜);牲畜棚密度最高,其次为农户(χ2=245.11,P<0.05);蚊密度季节变化趋势呈双峰状或单峰状;居民区、公园、医院均以致倦库蚊为优势蚊种,牲畜棚以三带喙库蚊为优势蚊种,农户2011和2012年以三带喙库蚊为优势蚊种,2013年以嗜人按蚊为优势蚊种(χ2=2 790.22,P<0.05)。结论内江市成蚊呈双峰状或单峰状消长,主要存在于牲畜棚,且不同生境优势蚊种不同。
Objective To understand the density and species of mosquitoes in different habitats within the urban area of Neijiang and to grasp the regularity of their occurrence and provide the basis for prevention and treatment. Methods Mosquitoes were used to monitor the mosquitoes in different habitats in Neijiang City. The mosquitoes were collected for classification and statistical analysis. Results A total of 23 212 adult mosquitoes were captured in 3 years. The mosquito density was 36.83, 35.33 and 72.92 / lamp / night respectively from 2011 to 2013. The density of livestock shed was the highest, followed by the farmer households (χ2 = 245.11, P <0.05). Mosquito density seasonal changes showed bimodal or single peak; residential areas, parks, hospitals are Culex pipiens pallens dominant mosquito species, livestock shed to Culex tritaeni the dominant mosquito species, peasant households in 2011 and 2012 to three Culex tritaeniorhynchus was the dominant mosquito species, and Anopheles anthropophagus was the dominant mosquito species in 2013 (χ2 = 2 790.22, P <0.05). Conclusion The adult mosquitoes in Neijiang showed bimodal or unimodal growth, mainly in the livestock shed, and the dominant mosquito species were different in different habitats.