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Distribution, Relative Abundance, and Movement of Skipjack Tuna, Katsuwonus Pelamis, in the Pacific Ocean Based on Japanese Tuna Longline Catches, 1964-67 (Classic Reprint) - Softcover
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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.
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Distribution, Relative Abundance, and Movement of Skipjack Tuna, Katsuwonus
Print-on-DemandAnbieter: Forgotten Books, London, Vereinigtes Königreich
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Paperback. Zustand: New. Print on Demand. This book examines the distribution, abundance, and movement of skipjack tuna in the Pacific Ocean. Through data collected between 1964-1967 from Japanese tuna longline catches, the author analyzes the relative abundance of skipjack tuna across the vast expanse of the ocean, providing insights into their behavior and migration patterns. The author discovered that skipjack tuna tend to concentrate around the east-central equatorial Pacific, and that their movements follow the circulation patterns of the major ocean currents: counterclockwise in the Southern Hemisphere and clockwise in the Northern Hemisphere, except for the counterclockwise flow in the Eastern Pacific. Surrounding these patterns are smaller, localized movements specific to each population group. The book contributes to our understanding of skipjack tuna population dynamics, which has implications for the sustainability and management of this crucial species within the global ecosystem. By tracing their migratory routes, the author sheds light on the potential connectivity between different populations and their resilience to environmental changes. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781334309366_0
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Distribution, Relative Abundance, and Movement of Skipjack Tuna, Katsuwonus Pelamis, in the Pacific Ocean Based on Japanese Tuna Longline Catches, 196467 Classic Reprint
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781334309366
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Distribution, Relative Abundance, and Movement of Skipjack Tuna, Katsuwonus Pelamis, in the Pacific Ocean Based on Japanese Tuna Longline Catches, 196467 Classic Reprint
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781334309366
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Distribution, Relative Abundance, and Movement of Skipjack Tuna, Katsuwonus Pelamis, in the Pacific Ocean Based on Japanese Tuna Longline Catches, 1964-67 (Classic Reprint)
Print-on-DemandAnbieter: Revaluation Books, Exeter, Vereinigtes Königreich
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Paperback. Zustand: Brand New. 46 pages. 8.82x5.83x0.24 inches. This item is printed on demand. Bestandsnummer des Verkäufers zk1334309361
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