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研究生: 吳世揚
Wu shi-yang
論文名稱: 蝎虎(Hemidactylus frenatus)族群內食物資源利用分配之研究
指導教授: 呂光洋
學位類別: 碩士
Master
系所名稱: 生命科學系
Department of Life Science
畢業學年度: 87
語文別: 中文
論文頁數: 64
中文關鍵詞: 蝎虎資源分配食性
論文種類: 學術論文
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  • 本研究在於探討台灣的蝎虎(Hemidactylus frenatus)族群內是否存在食物資源分配利用之現象。由南投縣草屯鎮市郊與宜蘭縣大湖地區的樣區每月採集蝎虎樣本,取其胃內所食之昆蟲,進行食物資源利用之分析。結果發現蝎虎利用的食物種類主要為節肢動物有鱗翅目、雙翅目、鞘翅目、半翅目、蜚蠊目、蛛形目與膜翅目。在環境食物豐沛的草屯地區,蝎虎不論在性別、體長與停棲高度皆存在食物資源分配利用區隔之現象。在草屯樣區雄蝎虎最常利用的食物為鱗翅目,相對重要指數為38.5,食性寬度為0.35、雌蝎虎最常利用的食物為雙翅目,相對重要指數為44.1,食性寬度為0.26,食性重疊度為0.90,隨著季節的改變在較冷的冬季皆以鱗翅目為主食,雄蝎虎食性寬度為0.16,雌蝎虎食性寬度為0.12,食性重疊度為0.96,在較暖的夏季雄蝎虎則以半翅目為主食,食性寬度為0.28、雌蝎虎則以雙翅目為主食,食性寬度為0.14,食性重疊度為0.84;體型大的蝎虎以鱗翅目利用最多,相對重要指數為52.3,食性寬度為0.28,體型中等與體型較小蝎虎偏好利用的種類為雙翅目,相對重要指數分別為56.8與44.8,食性寬度分別為0.24與0.28,大型與中型的食性重疊度為0.98,大型與小型的食性重疊度為0.92,中型與小型的食性重疊度為0.86;停棲高處的蝎虎最常利用的食物為雙翅目,相對重要指數為71.8,食性寬度為0.13,停棲中等高度的蝎虎最常利用的食物為鱗翅目,相對重要指數為60.6,食性寬度為0.22,停棲高度低的蝎虎最常利用的食物為半翅目,相對重要指數為45.9,食性寬度為0.31,停棲較高與停棲中等的食性重疊度為0.77,停棲較高與停棲較低的食性重疊度為0.68,停棲中等與停棲較低的食性重疊度為0.91。在大湖樣區由於環境昆蟲的種類與數量較少,不論在性別、體型與停棲高度上皆以鱗翅目為主要捕食對象。

    前言................................................... 1 材料與方法.............................................. 5 研究樣區與採集方式.................................. 5 取樣分析方法........................................ 6 結果.................................................... 10 蝎虎的基本生態資料.................................... 10 各月份每晚蝎虎出現隻次與溫度之關係.................. 10 雌雄蝎虎平均吻肛長、體重、頭寬與停棲高度............ 10 蝎虎吻肛長與停棲高度的關係.......................... 10 冷暖季節蝎虎吻肛長、體重、頭寬與停棲高度之差異...... 11 體內具硬殼卵之雌性蝎虎基本生態資料.................. 11 食物資源的分析........................................ 12 草屯地區蝎虎各月份食物種類利用之變化................ 12 草屯地區不同體長蝎虎食物利用之差異.................. 12 草屯地區不同停棲高度蝎虎食物利用之差異.............. 13 草屯地區不同季節蝎虎食物利用之差異.................. 14 草屯地區雌雄蝎虎食物利用之差異...................... 14 草屯地區暖季雌雄蝎虎食物利用之差異.................. 15 草屯地區冷季雌雄蝎虎食物利用之差異.................. 15 大湖地區不同體長蝎虎食物利用之差異.................. 16 大湖地區不同停棲高度蝎虎食物利用之差異.............. 16 大湖地區雌雄蝎虎食物利用之差異...................... 17 中部草屯與北部大湖地區蝎虎之比較...................... 17 基本生態資料之比較.................................. 17 食物資源利用之比較.................................. 18 主要被捕食昆蟲的因子分析.............................. 18 討論.................................................... 21 參考文獻................................................ 30 表1-16.................................................. 35 圖1-14.................................................. 49 附表.................................................... 64

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