English  |  正體中文  |  简体中文  |  Items with full text/Total items : 27314/39158
Visitors : 2471710      Online Users : 58
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/987654321/44984

Title: Distribution patterns of the blue shark Prionace glauca in the Atlantic Ocean, from observer data of the major fishing fleets
Authors: Coelho, R. (Rui);Mejuto-García, J. (Jaime);Domingo, A. (Andrés);Liu, K.M. (Kwuang-Ming);Cortés, E. (Enric);Yokawa, K. (Kotaro);Hazin, F. (Fabio);Arocha, F. (Freddy);Silva, C. (Charlene);García-Cortés, B. (Blanca);Ramos-Cartelle, A. (Ana);Lino, P.G. (Pedro G.);Forselledo, R. (Rodrigo);Mas, F. (Federico);Ohshimo, S. (Seiji);Carvalho, F. (Felipe);Santos, M.N. (Miguel Neves)
Contributors: 國立臺灣海洋大學:海洋事務與資源管理研究所
Keywords: Blue shark;catch-at-size;sex ratios;size composition;size distribution;spatial distribution;spatial models
Date: 2016
Issue Date: 2017-12-21T01:54:37Z
Abstract: Abstract:The blue shark is the most captured shark in pelagic longline fisheries targeting tunas and swordfish. As part of an ongoing cooperative program for fisheries and biological data collection , information collected by fishery observers and scientific Project from several fishing nations in the Atlantic (EU.Spain, EU.Portugal, Uruguay, Taiwán, USA, Japan, Brasil, Venezuela and South Africa) were analyzed. Datasets include information on geographic location, size and sex. A total of 414428 blue sharks records collected between 1992 and 2014 were compiled, with the sizes ranging from 36 to 394 cm FL (fork length). Considerable variability was observed in the size distribution by región and season, with larger sizes tending to ocsur in equatorial and tropical regions and smaller sizes in higher latitudes. The expected distribution of juvenile and adult specimens also showed considerable variability, and the sex ratios varied between regions and sizes classes. The distributional patterns
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44984
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