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題名 | 臺灣翠峰湖及青山壩鴛鴦生態之初探=A Preliminary Study on Mandarin Duck Ecology at Chuefeng Lake and Chinshan Dam in Taiwan |
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作者 | 孫元勳; 王穎; 王侯凱; Sun, Yuan-hsun; Wang, Ying; Wang, Ho-kai; |
期刊 | 中華林學季刊 |
出版日期 | 19971200 |
卷期 | 30:4=119 1997.12[民86.12] |
頁次 | 頁401-411 |
分類號 | 436.12 |
語文 | chi |
關鍵詞 | 鴛鴦; 行為; 棲地; 遷移; 無線電追蹤; Aix galericulata; Behavior; Habitat; Mandarin duck; Migration; Radio-tracking; |
中文摘要 | 本研究於民國82年3月至83年4月,在翠峰湖及青山壩進行鴛鴛(Aix galericulata) 行為、棲地選擇及遷移之觀察。青山壩鴛鴦多邊游邊覓食水面,尤其喜歡在水域線附近覓食。 覓食活動多在清晨時分進行,午后,雌鴨的覓食活動似乎依然沒有減弱。一般而言,間隔2.8 ±0.9小時就會開始另一波覓食活動。繁殖季,雌鴨的覓食活動特別活絡。鴛鴦傾向在離水 域較近的岸邊休息。壩區的雄鴨數目始終多於雌鴨的,尤其在孵蛋期間,鴛鴦敵對行為的動 機和季節有關,繁殖季前和初期多因守護配偶而起,相對地,後期則多由爭奪食物而起。換 羽愈早的雄鴨的社會地位愈低,可能和年齡或體羽象徵的地位有關。青山壩一隻繫著發報器 的雄鴨會降遷至下游11km的谷關水庫度冬。 |
英文摘要 | (We observed) The behavior, habitat selection, and seasonal movement of Mandarin ducks (Aix galericulata) at the Chuefeng Lake and Chinshan Dam, Taiwan were observed during March 1993 to April 1994. Mandarin ducks foraged most frequently in the water, particularly near the shore. At the Techiln Dam, both drakes and ducks foraged actively at dawn while the ducks still did so in the afternoon as well. The time for each foraging interval averaged 2.8 * 0.9 hrs. Mandarin ducks tended to rest near the shore. Drakes always outnumbered ducks throughout the study period, especially during the incubation period. Agonistic behaviors were motivated by mate defense prior to and during the breeding seasons, and by struggling for food from the middle to late breeding seasons. The earlier-molting drakes had lower hierarchy, probably due to younger age and/or a loss of plumage for display. A radio-marked drake from the Chinshan Darn wintered downstream in the lower-elevation Kukuen Reservoir, some 11 km away. |
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