農業部水產試驗所全球資訊網

拖網及刺網為臺灣西南海域沿近海的主要漁法，為許多家計型漁業之主要漁獲收益 來源。然由於長期高度的漁獲壓力，加以漁場生態環境劣化的情況下，沿近海魚類 資源相較過去已大幅下降，漁業資源如何永續利用已成為重要的課題。本計畫擬利 用西南海域拖網漁業標本船及各主要港口漁獲查報資料，進行重要魚種單位努力漁 獲量標準化，建立豐度指標以掌握底棲魚類資源之變動情形，並逐步建立主要漁獲 物種之生殖生物學及產卵場等族群生活史科學數據，以完整掌握西南海域底棲魚類 資源動態，提供資源評估及管理規範擬定之重要參考依據。

Bottom trawl and gillnet are the main fishing methods for the offshore and coastal fisheries in the southwestern waters of Taiwan, and a large number of small fishing boats rely on the income from these fisheries. However, under the persistent high fishing pressure for a long period as well as the deterioration of marine environments, the abundance of the fishery stocks have bee declined dramatically. As a result, how to utilize the fishery resources sustainably becomes the main issue for the management. In this study, we aim to estimate the standardized catch per unit effort (CPUE) to establish the abundance indices for commercially important species of the bottom trawl fishery. Besides, we will try to estimate the reproductive biological parameters, such as length at sexual maturity, fecundity and spawning seasons for important species. Finally, we want to provide integrated information on the status of demersal fishery resources for developing optimal fishing regulations in the southwestern waters of Taiwan.