行政院農業委員會台南區農業改良場   研究彙報第59號

 

雲林及嘉義地區2004-2008年期間農田野鼠棲群變動及種類組成

陳昇寬、黃榮作

摘  要

  陳昇寬、黃榮作。2012。雲林嘉義地區農田野鼠棲群密度變動及種類組成(2004-2008)。臺南區農業改良場研究彙報 59:36-44。

  雲林縣2004-2007年每年防除前野鼠之棲群密度變化不大,防除後之密度則呈上升之趨勢,但2008年防除前後之密度均有驟降之現象。嘉義縣2004-2007年每年防除前後之密度均呈上升之趨勢,於2008年則稍微下降。野鼠族群之平均增殖倍數在雲林縣為4.7倍,嘉義縣為5.5倍。兩縣之防除率均呈下降之趨勢,五年平均防除率分別為雲林縣75.9%,嘉義縣76.3%。捕獲之野鼠種類主要為小黃腹鼠、赤背條鼠、鬼鼠及月鼠,而溝鼠僅出現一次。小黃腹鼠及赤背條鼠為主要鼠種,在防除前後所佔之比例均較其他鼠種為高,小黃腹鼠所佔比例為22-72%,赤背條鼠所佔比例為12-70%,防除後小黃腹鼠之比例普遍較赤背條鼠為高。鬼鼠之田間棲群呈穩定狀態,且防除後之比例有升高之趨勢。月鼠之田間棲群於防除後較不穩定,且平均所佔之比例降得更低。

關鍵詞:野鼠、棲群密度、種類組成
接受日期:2012年5月21日


The Population Dynamics and Species Composition of Field Rodents
in Yunlin and Chiayi Area (2004-2008)

Chen, S. K. and J. C. Hung

Abstract

   The population density and species composition of field rodents were investigated between 2004-2008. In Yunlin county, the density before control was fairly stable and even increased mildly after control (from 2004-2007), but in 2008, the population dramatically decreased both before and after control. In Chiayi county, the population rose both before and after control between 2004-2007 while the density declined slightly in 2008. The multiple rate was 4.7 times in Yunlin and 5.5 times in Chiayi. The control efficiency decreased in both counties. The average control efficiency was 75.9% in Yunlin and 76.3% in Chiayi for 5 years. In terms of the species composition, the major species captured were Rattus losea, Apodemus agrarius, Bandicota indica, and Mus formosanus, while Rattus norvegicus was only trapped once. Rattus losea and Apodemus agrarius were dominant species and more individuals of these two species (Rattus losea 22-72%; Apodemus agrarius 12-70%) were found than the other species before and after the control. Rattus losea had a greater population than Apodemus agrarius after control. The overall population of Bandicota indica was very stable and the rate generally increased after control. Mus formosanus had a relative unstable population after the control and its population rate decreased greatly after control.

Key words: Field Rodents, Population Density, Species Composition
Accepted for publish: May 21, 2012


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