農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

本研究係利用台灣西南海域正櫻蝦業者1991 ~ 2007年期間之漁獲統計資料，以推算其在平衡狀態下之漁獲量 (YE) 、努力量 (fE) 及單位努力漁獲量 (YE / fE 或UE) 之關係。並利用剩餘生產量理論模式推算最大持續生產量 (MSY) 及相對應之漁獲努力量 (fs)。結果顯示 Fox模式與Schaefer模式所推算之最適生產量 (Y_0.1) 分別為900.99 mt及1218.50 mt，最適漁獲努力量 (f_0.1) 分別為12,858網次及15,594網次。由於該漁業1997年以後之年漁獲努力量大多超出最適漁獲努力量，且漁獲量及單位努力漁獲量急劇下降，顯示台灣西南海域正櫻蝦漁業目前已有過漁現象。如何估算最適漁獲努力量，以合理利用本正櫻蝦資源，為今後資源管理之重點工作。

This paper studied the sergestid shrimp ( (Sergia lucens, Hansen) fishery around Southwestern Taiwan between 1991 and 2007. Fishery statistics were collected and applied by the classical surplus production model. The values of the equilibrium fishing yields (YE) were estimated. Regression relationship between CPUE and fishing effort was significant. In the Fox model, the result of the estimated optimum yield (Y_0.1) was 893.32 mt with the condition of 10,478 hauls annually. In the Schaefer’s model, they were 1167.87 mt and 13,151 hauls, comparatively. Both assessment models showed that the resource has been over exploited, and that the level of exploitation should be largely reduced to sustain the stock.