Author: JAPAN TUNA FISHERIES FEDERATION (Tokyo)
Publisher:
ISBN:
Category :
Languages : en
Pages : 25

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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 25

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Author:
Publisher:
ISBN:
Category : Marlin fisheries
Languages : en
Pages : 38

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Author:
Publisher:
ISBN:
Category : Tuna fisheries
Languages : en
Pages : 40

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Author:
Publisher:
ISBN:
Category : Fish trade
Languages : en
Pages : 492

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Author: John P. Wise
Publisher:
ISBN:
Category : Albacore
Languages : en
Pages : 32

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Book Description
Charts of the Atlantic Ocean for each quarter of the year--January-March, etc.--show the distribution of 10 species and groups of species fished by the Japanese Atlantic longline fishery in the years 1956-68. These charts are based on detailed catch and fishing effort data published by the Japanese Government. Quarterly average catch per unit of effort was calculated for each 5° x 5° square, and contour lines were drawn through equal levels of catch per unit of effort. The text explains the calculation and contouring processes in detail, and has a section of remarks and explanation for each of the 10 species or groups.

Author: Walter M. Matsumoto
Publisher:
ISBN:
Category : Skipjack tuna
Languages : en
Pages : 100

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Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category : Skipjack tuna
Languages : en
Pages : 88

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Author: Walter M. Matsumoto
Publisher:
ISBN:
Category : Skipjack tuna
Languages : en
Pages : 802

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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: Wilvan G. Van Campen
Publisher:
ISBN:
Category : Albacore
Languages : en
Pages : 36

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Book Description
The important albacore fishery carried on by a fleet of Japanese live-bait tuna boats in the spring and early-summer in the northwestern Pacific is described. An account is given of the the historical background of the fishery, and the magnitude of its production is compared with other Japanese albacore fisheries and with the United States west coast fishery. The seasonal trends in landings, geographical distribution of bases and fishing grounds, and the marketing and utilization of the catch are discussed. The fishery is shown to be the largest in the world for this species, although only a recent outgrowth of, and still subsidiary to, the Japanese skipjack fishery, and to be largely dependent on foreign markets for its support.