沧源县山区按蚊群落学特征调查与分析方法探讨

InvestigationandAnalyticMethodsontheCommunityCharactersofAnophelesAdultsintheMountainousAreaofCangyuanCounty,YunnanZhangZai-xing*HuangRong*XiaoZheng-rong(*YunnanInstituteofMalariaControl,Simao,Yunnan,China,665000)AbstractTheresultshowedthatthemajoranophel

目的：调查沧源县山区按蚊群落学特征，并探讨分析方法。方法：６～１０月间每１０天捕（诱）蚊１次，计算高峰相对密度、构成比、捕获率、优势度、优势种间结合程度。结果：优势蚊种为多斑按蚊、中华按蚊、迷糊按蚊、环斑按蚊和微小按蚊，优势度分别为４２．４０、３０．５１、３４．９５、１６．９３和９．１７。结论：χ２检验不同蚊种间的捕获与未捕获次数，不能完全反映蚊虫动态变化的结合度；建议采用作图求密度高峰日、灰色关联、季节变化数学模型方法，并进行比较。

The result showed that the major anopheles species were An.maculatus,An.sinensis,An.vagus,An.annularis and An.minimus,with the dominance degrees 42.4,30.51,34.95, 16.93 and 9.17 respectively.The analytic result illustrated that Chi square test,toward the capture and non capture times of different species in the growth season,was not proper for reflecting the combining level of the dynamic density curves of diverse species.It is discussed and suggested to choose the following methods for the above purpose:1)to draw the cumulative density curve and find the range of 80% of the mosquitoes caught,on the basis of the density peak date,on the curve; 2) Gray correlation (γ) analysis.A γ of lower than 0.80,means poor curve combination,and a γ of higher than 0.90 means good combination;3)Establish mathematic models of dynamic density variation of some species and compare them.