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Author: Hiroshi Nakamura
Publisher: Wiley-Blackwell
ISBN:
Category : Nature
Languages : en
Pages : 100
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Book Description
Author: Hiroshi Nakamura
Publisher: Wiley-Blackwell
ISBN:
Category : Nature
Languages : en
Pages : 100
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Book Description
Author: Chiomi Shingu
Publisher:
ISBN:
Category : Bluefin tuna
Languages : en
Pages : 73
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Book Description
Author: Humphrey Sturt
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: M. Sella
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 24
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Book Description
Author: Hiroshi Ueda
Publisher: CRC Press
ISBN: 1466595140
Category : Nature
Languages : en
Pages : 196
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Book Description
Among the roughly 30,000 species of fish, migratory species account for only 165 species, but most of them are very important fisheries resources. This book presents up-to-date innovative research results on the physiology and ecology of fish migration. It focuses on salmon, eels, lampreys, and bluefin tuna. The book examines migratory behavior, sp
Author: Pedro Morais
Publisher: CRC Press
ISBN: 1498718744
Category : Science
Languages : en
Pages : 300
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Book Description
Since the publication of The Migrations of Fish by Prof. Alexander Meek in 1916, a number of books have been published on this subject. However, most of these books only cover one type of migratory mechanisms. This book aims to overcome this drawback by presenting a comprehensive coverage of all life history strategies-potadromy, anadromy, catadrom
Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 52
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Book Description
Author: José Luis Cort
Publisher: Springer
ISBN: 3030115453
Category : Science
Languages : en
Pages : 123
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Book Description
This open access book is an original contribution to the knowledge on fishing and research associated with one of the most enigmatic fish of our seas: bluefin tuna, Thunnus thynnus (L.). Based on available evidence, it reconstructs the possible methods used to catch large spawners in the Strait of Gibraltar thousands of years ago and describes the much more recent overfishing that led to a great reduction in the catches of the trap fishery on the area and the disappearance of the northern European fisheries. It is the first book to relate the overfishing of juvenile fishes in certain areas to the decline of large spawners in other very distant areas, revealing one of the main underlying causes of this decline, which has remained a mystery to the fishing sector and scientists alike for over 50 years. This finding should serve to prevent similar cases from arising in the future.
Author: Brian J. Rothschild
Publisher:
ISBN:
Category : Albacore
Languages : en
Pages : 48
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Book Description
Author: John R. Hunter
Publisher: Food & Agriculture Org.
ISBN: 9789251024713
Category : Nature
Languages : en
Pages : 88
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Book Description
Weaknesses in understanding of tuna distributions and movements have constrained the development of rational management policies. Uncertainties exist in: the selection of management plans and catch and effort data that are representative of a stock; quantification of exchange of adults among management jurisdictions and fishing gears; and identification of the relationships between the environment and tuna movements. This report summarizes a series of discussions between a panel and groups of experts on how to increase understanding of these and other tuna problems. We discuss the uncertainties in current management policy caused by lack of understanding of tuna movement dynamics. We describe and evaluate the research approaches presently used to describe the movements of tunas--mark and recapture and acoustic tracking-- and those which might be used or are just being applied, including new tagging systems, measurement of physiological state and microconstituents of mineralized tissue. Actions needed to improve the knowledge of tuna movements are: 1) establish international arrangements to share tuna movement data, to analyse movements on an oceanwide and worldwide basis and to link international oceanographic programs; 2) increase number and kinds of observations of movements of tuna in the vertical plane; 3) develop and use technology for tracing the actual paths followed by tunas over extended periods and for measuring movements independent of the fishery; and 4) conduct intensive studies on tuna movement dynamics which combine old with the new technologies discussed in the report.
