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相關文獻
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頁籤選單縮合
題名 | 竿釣釣鉤對粗首鱲和臺灣馬口魚體長的選擇性=Length Selectivity of Hook Sizes on Stream Fishes Zacco pachycephalus and Candidia barbata |
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作者 | 張世倉; | 書刊名 | 特有生物研究 |
卷期 | 2 2000.05[民89.05] |
頁次 | 頁44-53 |
分類號 | 439.3 |
關鍵詞 | 體長選擇性; 釣鉤; 臺灣馬口魚; 粗首鱲; Length selectivity; Hook size; Candidia barbata; Zacco pachycephalus; |
語文 | 中文(Chinese) |
中文摘要 | 為臺灣河川休閒漁業之管理與其資源保育,本研究探討常用之秋田狐1號至5號釣鉤(寬2.06- 3.63 mm)對粗首 (Zacco pachycephalus)和台灣馬口魚(Candidia barbata)體長之選擇性。結果顯示 這五種大小不同釣鉤對兩魚種種內族群無顯著體長選擇性,但兩魚種間則有顯著之選擇性。同一 號釣鉤捕獲之粗首 體長比台灣馬口魚大,此乃因台灣馬口魚有較大之口幅所致。所捕獲台灣馬 口魚有80.9%為幼魚,18.7%為亞成魚,而成魚只有0.4%。為保護河川休閒漁業資源及維持族群最 大捕獲量,秋田狐釣鉤1號至5號有過小之慮。本研究建議今後在臺灣河川休閒漁業管理上,應加 強各種不同漁法對現有資源影響的相關研究,提供更明確之管理依據。 |
英文摘要 | For the management need of the inland angling fishery in Taiwan, length selectivity of five different sizes of Akida Nos. 1-5 hooks (width 2.06-3.63 mm) was examined for Zacco pachycephalus and Candidia barbata. The results indicated that there was no significant difference in the length selectivity among the hook sizes within each species, but the significance was found between the two species. For each size of the hooks, lengths of Z. pachycephalus caught were averaged significantly longer than those of C. barbata. This was primarily due to comparatively smaller mouth for the former species than for the latter species. For C. barbata 80.9% of fish caught was juveniles, 18.7% subadults and 0.4% adults. Apparently, the Akida Nos. 1-5 hooks are too small to maintain the maximum sustainable yield of stream fishes for the angling fishery in Taiwan. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。