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三斑家蚊(Culex tritaeniorhynchus)族群消長之研究

Population Fluctuation of Culex tritaeniorhynchus in Taiwan

摘要


三斑家蚊(Culex tritaeniorhynchus)為台灣地區日本腦炎最重要之媒介。族群密度高峰期,北部(泰山)出現於9月;中部(彰化)出現於8月;南部(潮州)出現於7月。北部地區在1991年月平均溫度較高,族群密度高峰期較1990及1992年提前2-3個月。南部地區1990-1992年與1962-1963年調查結果比較,族群密度有極顯著之增加。北、中部地區族群密度與月平均溫度及降雨量呈極顯著相關。與月平均溫度之相關係數r值,北、中部各為0.64及0.57(P<0.01);與降雨量之相關係數r值,北、中部各為0.45及0.50(P<0.01),顯示極顯著相關。南部地區族群密度與月平均溫度及降雨量之相關係數r值,各為0.31及0.16(P>0.05),顯示並無相關。

關鍵字

三斑家蚊 族群消長

並列摘要


Culex tritaeniorhynchus is the major vector of Japanese encephalitis virus in Taiwan. The highest population density was observed in September in northern Taiwan, in August in central Taiwan, and in July in Southern Taiwan. In northern Taiwan, the monthly temperatures were higher in 1991, and the maximum population occurred 2-3 months earlier than in 1990 and 1992. The population densities in 1990-1992 exceeded those in 1962-1963 in southern Taiwan. The population density was significantly correlated with monthly mean temperature (r=0.64 and 0.57; P<0.01) and monthly precipitation (r=0.45 and 0.50; P<0.01) in northern and central Taiwan, whereas in southern Taiwan there was correlation with neither monthly mean temperature (r=0.31; P>0.05) nor monthly precipitation (r=0.16; P>0.05).

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