Recent changes in the efficiency of vessels fishing for yellowfin tuna in the eastern Pacific Ocean

Broadhead, Gordon C. (1962) Recent changes in the efficiency of vessels fishing for yellowfin tuna in the eastern Pacific Ocean. Inter-American Tropical Tuna Commission Bulletin, 6(7), pp. 281-332.

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Abstract

ENGLISH: Since the inception of the Inter-American Tropical Tuna Commission in 1950, one of the primary tasks of its scientific staff has been the collection and analysis of the statistics of total catch, effort expended in obtaining this catch, and the apparent abundance of yellowfin tuna (Neothunnus macropterus) and the skipjack tuna (Katsuwonus pelamis) in the Eastern Pacific Ocean. A concentrated effort by the staff during 1951 and 1952 resulted in the compilation of a series of historical data on the catch and catch-per-effort of tropical tunas for the years 1934-1950, and in the establishment of a detailed logbook system to monitor the current activities of the tuna fleets. Schaefer (1953) and Shimada and Schaefer (1956) have reviewed in detail the methods of collection and analysis of these data. Further studies, based on these and subsequently collected records, are contained in publications by Schaefer (1957), Shimada (1958), Alverson (1959, 1960), Griffiths (1960) and Calkins (1961). SPANISH: Desde que la Comisión Interamericana del Atún Tropical comenzó sus funciones en 1950, entre las más importantes tareas de su personal científico incluyó la recolección y análisis de las estadísticas de la captura total, del esfuerzo empleado en obtener esta captura y de la abundancia aparente de los atunes aleta amarilla (Neothunnus macropterus) y barriletes (Katsutvonus pelamis) en el Océano Pacífico Oriental. El concentrado esfuerzo del personal científico de la Comisión durante 1951 y 1952 dió como resultado la compilación de una serie de datos históricos sobre la captura de atunes tropicales y sobre la captura según el esfuerzo durante los años 1934 a 1950, así como el establecimiento de un sistema detallado de registro de las anotaciones en los cuadernos de bitácora para vigilar las actividades diarias de las flotas atuneras. Schaefer (1953) y Shimada y Schaefer (1956) han expuesto detalladamente los métodos de recolección y análisis de dichos datos. Otros estudios, basados en estos registros y en los recolectados posteriormente, se encuentran en las publicaciones de Schaefer (1957), Shimada (1958), Alverson (1959, 1960), Griffiths (1960) y Calkins (1961).

Item Type: Article
Title: Recent changes in the efficiency of vessels fishing for yellowfin tuna in the eastern Pacific Ocean
Personal Creator/Author:
CreatorsEmail
Broadhead, Gordon C.
Journal or Publication Title: Inter-American Tropical Tuna Commission Bulletin
Volume: 6
Number: 7
Page Range: pp. 281-332
Date: 1962
Issuing Agency: Inter-American Tropical Tuna Commission
Additional Information: This article is bilingual and contains both Spanish and English translations.
Uncontrolled Keywords: efficiency; fishing; yellowfin tuna; Neothunnus macropterus; skipjack tuna; Katsuwonus pelamis; eastern Pacific Ocean; eficiencia; pesca; aleta amarilla; barriletes; Océano Pacífico Oriental
Subjects: Fisheries
Item ID: 2584
Depositing User: Joan Parker
Date Deposited: 31 Aug 2009 17:35
Last Modified: 29 Sep 2011 18:55
URI: http://aquaticcommons.org/id/eprint/2584

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