頁籤選單縮合
題名 | 褐鷹鴞捕食行為與食物豐度之關聯性=Relationship between Hunting Behavior and Prey Abundance of Brown Hawk Owl (Ninox scutulata) |
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作者姓名(中文) | 林文隆; | 書刊名 | 臺灣猛禽研究 |
卷期 | 2 2004.05[民93.05] |
頁次 | 頁1-10+44_1 |
分類號 | 388.892 |
關鍵詞 | 褐鷹鴞; 捕食行為; 飛啄; 飛捉; 攫取; Brown hawk owl; Hunting behavior; Hawking; Fly catching; Skimming; |
語文 | 中文(Chinese) |
中文摘要 | 自1999年11月至000年10月在臺中市大坑與南投縣蓮華池及2001年1月至12月在臺中縣霧峰,觀察褐鷹鴞(Ninox scutulata)捕食行與與食物豐富度之關聯性。期間共記錄褐;作鴞3種捕食行為,分別為飛啄(hawking)、飛捉(fly-catching)與攫取(skimming)。飛啄在一年各當中出現的頻度差異不大,飛捉則明顯以夏、秋兩季較多(F=27.9>F0.05,3,8=4.06)。飛捉出現頻度與大型昆蟲數量多寡有明顯的相關(等級相關檢定t=3.70>t0.05,10=2.23),當夏、秋兩大型昆蟲數量多時,褐鴈鴞飛捉頻度會增加。雖然小型昆蟲數量也呈現季節性消長,但是飛啄與小型昆蟲數量多寡則無明顯相關。攫取在觀察過程中出現的頻度相當少,推測與地面性獵物的豐度與靈活度或反抗性有關。潛獵(stalking)這種文獻上曾提及的捕食行為在觀察中並未發現,但是從食繭中出現日型性鳥類加以推斷,潛獵很有可能存在且可能針對鳥類這類食餌。 |
英文摘要 | The hunting behavior of the Brown Hawk Owl (Ninox scutulata) was studied from November 1999 to October 2000 at Daken and Lienhuachih, and January 2001 to December 2001 at Wufeng, central Taiwan. Three types of hunting behavior of the Brown Hawk Owl were recorded, including hawking, fly-catching, and skimming. Hawking frequency did not significantly differ among seasons, but the frequency of fly-catching was significantly higher in summer and fall than in winter and spring (F=27.9>F0.05,3,8=4.06). The frequency of fly-catching was significantly correlated with the abundance of large insects. The hunting behavior of fly-catching was more frequent in summer and fall, seasons in which large insects were more abundant (rank correlation test: t=3.70>t0.05,10=2.23). Hawking behavior was not significantly correlated with the amount of small insects, in spite of significant seasonal changes in small insect abundance. Skimming behavior was rare during the study period, and it have been limited by the abundance of ground prey and, possibly, their resistance and agile movements. Although stalking behavior was not observed during the study period, pellet analyses revealed that this behavior might exist with birds being the target prey. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。