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Book Hypotheses on the Origin of Exploited Skipjack Tuna Katsuwonus Pelamis In the Eastern and Central Pacific Ocean Classic Reprint

Download or read book Hypotheses on the Origin of Exploited Skipjack Tuna Katsuwonus Pelamis In the Eastern and Central Pacific Ocean Classic Reprint written by Brian J. Rothschild and published by Forgotten Books. This book was released on 2018-02-22 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Hypotheses on the Origin of Exploited Skipjack Tuna (Katsuwonus Pelamis) In the Eastern and Central Pacific Ocean Figure 3.-percentage of females classified as maturing during each quarter of the year from various areas of the eastern Pacific (data are from Orange. 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.

Book Hypotheses on the Origin of Exploited Skipjack Tuna Katsuwonus Pelamis in the Eastern and Central Pacific Ocean

Download or read book Hypotheses on the Origin of Exploited Skipjack Tuna Katsuwonus Pelamis in the Eastern and Central Pacific Ocean written by Brian J. Rothschild and published by . This book was released on 1965 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Hypothesis on the Origin of Exploited Skipjack Tuna Katsuwonus Pelamis in the Eastern and Central Pacific Ocean

Download or read book Hypothesis on the Origin of Exploited Skipjack Tuna Katsuwonus Pelamis in the Eastern and Central Pacific Ocean written by Brian J. Rothschild and published by . This book was released on 1965 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Distribution Relative Abundance and Movement of Skipjack Tuna Katsuwonus Pelamis in the Pacific Ocean Based on Japanese Tuna Longline Catches 1964 67

Download or read book Distribution Relative Abundance and Movement of Skipjack Tuna Katsuwonus Pelamis in the Pacific Ocean Based on Japanese Tuna Longline Catches 1964 67 written by Walter M. Matsumoto and published by . This book was released on 1975 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Distribution Relative Abundance and Movement of Skipjack Tuna Katsuwonus Pelamis in the Pacific Ocean Based on Japanese Tuna Longline Catches 1964 67 Classic Reprint

Download or read book Distribution Relative Abundance and Movement of Skipjack Tuna Katsuwonus Pelamis in the Pacific Ocean Based on Japanese Tuna Longline Catches 1964 67 Classic Reprint written by Walter M. Matsumoto and published by Forgotten Books. This book was released on 2018-02-20 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Growth of Skipjack Tuna Katsuwonus Pelamis in the Eastern Pacific Ocean

Download or read book Growth of Skipjack Tuna Katsuwonus Pelamis in the Eastern Pacific Ocean written by Enrique L. Diaz and published by . This book was released on 1966 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Some Hypotheses on Skipjack Katsuwonus Pelamis in the Pacific Ocean

Download or read book Some Hypotheses on Skipjack Katsuwonus Pelamis in the Pacific Ocean written by R. E. Kearney and published by . This book was released on 1978 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Studies on the Population Structure of Skipjack Tuna Katsuwonus Pelamis in the Central and Eastern Pacific Ocean

Download or read book Studies on the Population Structure of Skipjack Tuna Katsuwonus Pelamis in the Central and Eastern Pacific Ocean written by James N. Ianelli and published by . This book was released on 1993 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Distribution of Forage of Skipjack Tuna Euthynnus Pelamis In the Eastern Tropical Pacific Classic Reprint

Download or read book Distribution of Forage of Skipjack Tuna Euthynnus Pelamis In the Eastern Tropical Pacific Classic Reprint written by Maurice Blackburn and published by Forgotten Books. This book was released on 2016-09-26 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Distribution of Forage of Skipjack Tuna (Euthynnus Pelamis) In the Eastern Tropical Pacific In the region from long 92 to 119 W the major areas of maximum concentration of potential skipjack forage remained essentially constant during most periods. Two of these areas lie parallel to the equatorial upwelling zone - one just to the north, the other just to the south. Another zonal area of abundant forage generally occurs between lat 6 and 14 N. Forage is also frequently abundant between lat 140 and 20 N and long 107 and 119 W. The concentrations of skipjack forage in these areas are comparable with those in nearshore parts of the eastern tropical Pacific, where the present skipjack fishery occurs. The abundance of skipjack in the forage-rich offshore areas might therefore be sufficient to support commercial fishing operations. Sea-surface temperatures are generally suit able for skipjack in those areas. On three recent crossings of the equatorial region at about long 119 W, skipjack appeared to be abundant in the first three areas of high forage concentration mentioned above. 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."

Book Maturity and Spawning of Skipjack Tuna Katsuwonus Pelamis in the Atlantic Ocean with Comments on Nematode Infestation of the Ovaries Classic Repri

Download or read book Maturity and Spawning of Skipjack Tuna Katsuwonus Pelamis in the Atlantic Ocean with Comments on Nematode Infestation of the Ovaries Classic Repri written by David C. Simmons and published by Forgotten Books. This book was released on 2018-02-21 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Maturity and Spawning of Skipjack Tuna (Katsuwonus Pelamis) In the Atlantic Ocean, With Comments on Nematode Infestation of the Ovaries Figure 4.-monthly percentage distribution of developmental stages of the ovaries of mature skipjack tuna from the western tropical Atlantic. No ovaries were collected in January, May, July, and December. 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.

Book Distribution of Forage of Skipjack Tuna Euthynnus Pelamis in the Eastern Tropical Pacific

Download or read book Distribution of Forage of Skipjack Tuna Euthynnus Pelamis in the Eastern Tropical Pacific written by Maurice Blackburn and published by . This book was released on 1972 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fishery for skipjack tuna (Euthynnus pelamis) in the eastern Pacific Ocean might be extended if offshore areas of high skipjack abundance were known. One would expect the numbers of skipjack in these offshore areas to be related to the distribution of known skipjack forage organisms in the micronekton. The EASTROPAC oceanographic cruises yielded net-caught micronekton samples over large parts of the eastern tropical Pacific during seven successive 2-month periods. From these samples, the occurrence of organisms known to be prey of skipjack was expressed at ml/1000 m3. Charts of night and day concentrations in the upper 200 m were produced for each of the seven periods. In the region from long 92° to 119° W the major areas of maximum concentration of potential skipjack forage remained essentially constant during most periods. Two of these areas lie parallel to the equatorial upwelling zone--one just to the north, the other just to the south. Another zonal area of abundant forage generally occurs between lat 6° and 14° N. Forage is also frequently abundant between lat 14° and 20° N and long 107° and 119° W. The concentrations of skipjack forage in these areas are comparable with those in nearshore parts of the eastern tropical Pacific, where the present skipjack fishery occurs. The abundance of skipjack in the forage-rich offshore areas might therefore be sufficient to support commercial fishing operations. Sea-surface temperatures are generally suitable for skipjack in those areas. On three recent crossings of the equatorial region at about long 119° W, skipjack appeared to be abundant in the first three areas of high forage concentration mentioned above.

Book Report of Investigations of Skipjack and Tuna Resources in 1947

Download or read book Report of Investigations of Skipjack and Tuna Resources in 1947 written by Nakamura Research Staff and published by . This book was released on 1950 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: