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題名 | The Mathematical Catch Model of Pots for Yellow Sea Bream=赤鯮籠具之漁獲模式 |
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作者 | 陳俊德; 俞克儉; 謝寬永; 何權浤; | 書刊名 | 臺灣水產學會刊 |
卷期 | 25:2 1998.06[民87.06] |
頁次 | 頁93-100 |
分類號 | 439.3 |
關鍵詞 | 漁獲模式; 浸漬時間; Monte carlo模擬法; 赤鯮; 籠漁業; Catch model; Soaking time; Monte carlo simulation; Yellow sea bream; Pot fishery; |
語文 | 英文(English) |
中文摘要 | 赤�X籠漁業具有構造簡單、操業便利、較不受漁場之限制、所需經費少等特點, 而且漁獲物能存活,故魚價能大幅提高,且能選定漁獲體長,利於實施資源管理,因此可望 成為沿近海重要漁業之一。然而因該漁具之漁獲機制尚未被究明,業者常為該漁具作業時所 應採取之最適浸漬時間而困惑。本研究為探討漏漬時間對漁獲之影響,於傳統的彭佳嶼漁場 ,以不同之籠具浸漬時間(15、30、45、60、75、90、120、300分鐘)進行漁獲試驗作業。 並以此實際的漁獲結果為基礎,建立三種可能之漁獲模式。經使用Monte Carlo模擬法推定 出此三個模式之參數,並以mean square error值比較此三個模式之理論值與觀測值之適合 度,結果顯示赤�X籠漁具之漁獲量應同時受浸漬時間及已入籠尾數的雙重影響,且最適之浸 漬時間為45分鐘。 |
英文摘要 | Pot fishing is an efficient method for catching demersal species at coast and offshore off Taiwan. To analyze the catch mechanism of pot equipment for yellow sea bream, this research was conducted at the northern offshore waters off Taiwan. Eight designed soaking times for pots (15, 30, 45, 60, 75, 90, 120 and 300 minutes) were used in this study. Based on the actual data for soaking time and catch, three catch models were built. The parameters of the three catch models were estimated by using the Monte Carlo simulation method and their fitness were examined by using mean square error (MSE). The results show that escapement rate is proportional to soaking time and catch. The optimum soaking time for pot fishing is 45 minutes. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。