English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28605/40643
Visitors : 4664098      Online Users : 313
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/25110

Title: Preliminary estimates of blue and mako sharks bycatch and cpue of Taiwanese longline fishery in the Atlantic Ocean
Authors: Liu K. M.;W. P. Tsai;S. J. Joung
Contributors: NTOU:Institute of Marine Affairs and Resource Managemen
Keywords: By-catch;sharks;catch/effort;longlining
Date: 2008
Issue Date: 2011-10-20T08:21:18Z
Publisher: ICCAT Shark Stock Assessment Meeting
Abstract: This report was based on observers’ records of Taiwanese tuna longline fishing fleets operating in the Atlantic Ocean from 2002-2006. According to the shark by-catch rate, five areas, namely, A (5ºN-15ºS), B (15ºS-50ºS, west to 20ºW), C (15ºS-50ºS, 20ºW-20ºE), D (5ºN-20ºN) and E (north of 20ºN), were categorized. The shark catch data reported by observers were used to adjust the historical shark catch in Task I and to estimate the blue shark and mako shark catches of the Taiwanese longline fishery in the Atlantic Ocean. The shark by-catch in the tropical area (areas A and D) is higher than that in the temperate area (areas B, C, and E). Blue shark and mako shark are the dominant species of the shark by-catches in all areas. Shark by-catch in weight ranged from 1601 tons (1984) to 12872 tons (1996) in the South Atlantic Ocean, and ranged from 196 tons (1989) to 3066 tons (1994) in the North Atlantic Ocean. Blue shark by-catch in weight peaked in 1996 at 11628 tons in the South Atlantic Ocean and in 1994 at 2684 tons in the North Atlantic Ocean. The results in this study are preliminary and further investigation is needed.
Relation: SCRS期2008期153期
URI: http://ntour.ntou.edu.tw/handle/987654321/25110
Appears in Collections:[海洋事務與資源管理研究所] 演講及研討會

Files in This Item:

There are no files associated with this item.

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback