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題 名 | Feeding Habit of the Japanese Eel, Anguilla japonica, in the Streams of Northern Taiwan=臺灣北部溪流產日本鰻的攝食習性 |
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作 者 | 曾萬年; 蕭瑞仁; 沈慧萍; 陳楊宗; 王友慈; 吳晶瑩; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 22:4 1995.12[民84.12] |
頁 次 | 頁279-301 |
分類號 | 388.491 |
關鍵詞 | 日本鰻; 食性; 餌料生物種類; 溪流; 臺灣; Anguilla japonica; Feeding habit; Relative importance of prey; Stream; Taiwan; |
語 文 | 英文(English) |
中文摘要 | 為了瞭解日本鰻的攝食生態,1992年9月起至19941月止,按月於臺灣已部河川下 游地帶,以電魚方式採集魚類標本。同時,監測物理化學環境因子、魚類相、水?昆蟲及植 被等。鰻魚的體長從6公分至76公分不等,其中以1、2歲為主。鰻魚的主要食物種類包括 顫蚓(貧毛綱)、水屋、水棲昆蟲(蜉蝣目、雙翅目)及植物的碎屑和種子。食物種類組成隨 著鰻魚體長而改變。鰻魚屬於逢機雜食性魚類,攝食棲地中易獲得的脊椎動物及植物。可能 是夏季的環境惡劣,鰻魚在該季節時攝食活動性低,這點在魚類的肥滿度上很明顯地表現出 來。文中,並探討攝食活動與餌料生物豐富度、環境條件等之關係。 |
英文摘要 | Japanese eel, Anguilla japonica Temminck and Schlegel, was collected monthly with an electric shocker at the 4 stations of the Gong-Shy-Tyan strearn and a Tanshui River tributary in morthern Taiwan from September 1992 to January 1994. Physico-chemical environmental conditions, fish fauna, aquatic insects and terrestrial vegatation were also investigated. The sizes of the eel collected ranged from 6 cm to 76 cm dominated by one-and two-year old fish. The eel was an opportunistic omnivore, feeding mainly on invertebrates and vegetables available in the streams. The diet consisted mainly of tubifex worm (Oligochacta), Hirudinea, Brachyura, aquatic inscet (Ephemeroptera, Diptera), plant fragment and seed. The diet composition changed with eel size. The feeding activity was lower in the summer season probably due to stressed environmental condition. The relationships between feeding activity and prey availability and environmental condition are described. |
本系統中英文摘要資訊取自各篇刊載內容。