Size and year class composition of catch, age and growth of yellowfin tuna in the Eastern Tropical Pacific Ocean for the years 1954-1958

Hennemuth, Richard C. (1961) Size and year class composition of catch, age and growth of yellowfin tuna in the Eastern Tropical Pacific Ocean for the years 1954-1958. Inter-American Tropical Tuna Commission Bulletin, 5(1), pp. 1-112.

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Abstract

ENGLISH: Data on the size composition of catch for the years 1954-1958 have been studied to determine year class composition, age and growth of yellowfin tuna in the Eastern Tropical Pacific Ocean. Direct age determination of tropical tunas has not yet proven reliable; however, this analysis has shown that the length-frequency distributions themselves are adequate to determine year class structure and growth rates. Absolute age has been estimated by comparing the average time of spawning with the time at which age groups initially appear in the catch. SPANISH: Los datos sobre la composición del tamaño de la pesca durante los años 1954-1958 han sido estudiados con el objeto de determinar la composición de las clases anuales, la edad y el crecimiento del atún aleta amarilla en el Océano Pacífico Oriental Tropical. Las determinaciones directas de la edad de los atunes tropicales no han probado todavía ser de confianza; sin embargo, este análisis ha demostrado que las distribuciones de la frecuencia de las longitudes son adecuadas para determinar la estructura de las clases anuales y de las tasas de crecimiento. La edad absoluta ha sido estimada mediante la comparación de la época promedio de desove con la epoca en que los grupos de edades comienzan a aparecer en la pesca.

Item Type: Article
Title: Size and year class composition of catch, age and growth of yellowfin tuna in the Eastern Tropical Pacific Ocean for the years 1954-1958
Personal Creator/Author:
CreatorsEmail
Hennemuth, Richard C.
Journal or Publication Title: Inter-American Tropical Tuna Commission Bulletin
Volume: 5
Number: 1
Page Range: pp. 1-112
Date: 1961
Issuing Agency: Inter-American Tropical Tuna Commission
Additional Information: This article is bilingual and contains both Spanish and English translations.
Uncontrolled Keywords: size composition; age; growth; yellowfin tuna; Eastern Tropical Pacific Ocean; composición del tamaño; edad; crecimiento; atún aleta amarilla; Océano Pacífico Oriental Tropical
Subjects: Fisheries
Item ID: 2339
Depositing User: Joan Parker
Date Deposited: 26 Jun 2009 11:31
Last Modified: 29 Sep 2011 19:14
URI: http://aquaticcommons.org/id/eprint/2339

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