Analysis of Catches of Nine Japanese Tuna Longline Expeditions to the Western Pacific Ocean (Classic Reprint) PDF Download
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Author: Garth I. Murphy
Publisher: Forgotten Books
ISBN: 9781333111977
Category : Business & Economics
Languages : en
Pages : 60
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Book Description
Excerpt from Analysis of Catches of Nine Japanese Tuna Longline Expeditions to the Western Pacific Ocean Table 1. -catch per 100 hooks of yellowfin and bigeye tuna arranged by the relative amount of sauries and sardines used as bait (all ex peditions combined) About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Garth I. Murphy
Publisher: Forgotten Books
ISBN: 9781333111977
Category : Business & Economics
Languages : en
Pages : 60
Get Book Here
Book Description
Excerpt from Analysis of Catches of Nine Japanese Tuna Longline Expeditions to the Western Pacific Ocean Table 1. -catch per 100 hooks of yellowfin and bigeye tuna arranged by the relative amount of sauries and sardines used as bait (all ex peditions combined) About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Garth I. Murphy
Publisher:
ISBN:
Category : Longlining (Fisheries)
Languages : en
Pages : 56
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Book Description
Author: Walter M. Matsumoto
Publisher: Forgotten Books
ISBN: 9780666020147
Category : Science
Languages : en
Pages : 44
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Book Description
Excerpt from Distribution, Relative Abundance, and Movement of Skipjack Tuna, Katsuwonus Pelamis, in the Pacific Ocean Based on Japanese Tuna Longline Catches, 1964-67 Certain characteristics of the longline gear affect the catch and catch data. And these should be cited so that conclusions drawn from the data are viewed in the proper perspective. First, the catches of skipjack tuna by this gear are extremely small. In the years 1962-66, for example, the catch of skipjack tuna in the Japanese commercial tuna longline fishery averaged metric tons per year, as compared with an average of metric tons caught by the pole-and-line fishery. The smallness of the catch reflects the inefficiency of the gear for taking this species, but, because of the wide areal coverage by this gear, these data should be useful for determining areas of high or low relative abundance. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Makoto Miyake
Publisher: Food & Agriculture Org.
ISBN: 9789251051368
Category : Business & Economics
Languages : en
Pages : 84
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Book Description
The total world catch of the major commercial tuna species (albacore, bigeye, bluefin, skipjack and yellowfin) has increased during the last 50 years (from 0.4 to 3.9 million tonnes), but the pattern of increase has varied among species, oceans and fishing gears. The Pacific Ocean has been the predominant region in the world catch, with catches from the Indian Ocean having exceeded those from the Atlantic Ocean in recent years. This publication examines historical trends in the catches of these tuna species and considers the causes of the variations.
Author: Garth I. Murphy
Publisher:
ISBN:
Category : Longlining (Fisheries)
Languages : en
Pages : 38
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Book Description
Author: Edwin S. Iversen
Publisher:
ISBN:
Category : Tuna fisheries
Languages : en
Pages : 32
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Book Description
Author: Walter M. Matsumoto
Publisher:
ISBN:
Category : Skipjack tuna
Languages : en
Pages : 802
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Book Description
Catch data of the Japanese tuna longline fishery from 1964 to 1967 were analyzed to determine the distribution, abundance, and movement of skipjack tuna, Katsuwonus pelamis, in offshore waters of the Pacific Ocean. Large skipjack tuna, as well as larvae, were found to be concentrated mainly in the east central equatorial Pacific. Movement of skip-jack tuna stocks was determined by following the shifting of high-CPUE (catch per unit effort) cells from one quarter to the next. The apparent movement of skipjack tuna stocks in the Pacific appeared to coincide with the circulation of the major ocean currents; counterclockwise in the southern hemisphere and clockwise in the northern hemisphere, except in the eastern Pacific where the current flow is counterclockwise. The movement patterns of high CPUE suggested that skipjack tuna adults or their progeny could move from one area to the next. The movement pattern was used also to determine the probable migratory routes followed by skipjack tuna tagged in the eastern Pacific and recovered near the Hawaiian and Christmas islands.
Author: Edwin S. Iversen
Publisher:
ISBN:
Category : Bigeye tuna
Languages : en
Pages : 52
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Book Description
Author: Sidney Shapiro
Publisher:
ISBN:
Category : Tuna fisheries
Languages : en
Pages : 68
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Book Description
Author: Garth I. Murphy
Publisher:
ISBN:
Category : Longlining (Fisheries)
Languages : en
Pages : 52
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Book Description
