Measures of population density and concentration of fishing effort for yellowfin and skipjack tuna in the eastern Tropical Pacific Ocean 1951-1959

Calkins, Thomas P. (1961) Measures of population density and concentration of fishing effort for yellowfin and skipjack tuna in the eastern Tropical Pacific Ocean 1951-1959. Inter-American Tropical Tuna Commission Bulletin, 6(3), pp. 69-152.

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Abstract

ENGLISH: In a previous Bulletin of this Commission, Griffiths (1960) discussed two indices of population density and an index of concentration of fishing effort of bait boats for yellowfin tuna in the Eastern Tropical Pacific for the 1951-1956 period. Yellowfin and skipjack tuna occur in the same general fishing areas and many of the commercial catches are composed of a mixture of the two species. It is desirable, therefore, to extend the investigation to skipjack and to the two species combined. SPANISH:En un Boletín anterior de esta Comisión, Griffiths (1960) se refiere a dos índices de la densidad de la población y a un índice de la concentración del esfuerzo de pesca de los barcos de carnada sobre el atún aleta amarilla en el Pacífico Oriental Tropical, correspondientes al período 1951-1956. Los atunes aleta amarilla y barrilete se encuentran en las mismas áreas generales de pesca y muchas de las pescas comerciales están compuestas de una mezcla de las dos especies. Es deseable, por lo tanto, ampliar la investigación en lo que se refiere al barrilete y a las dos especies combinadas.

Item Type: Article
Title: Measures of population density and concentration of fishing effort for yellowfin and skipjack tuna in the eastern Tropical Pacific Ocean 1951-1959
Personal Creator/Author:
CreatorsEmail
Calkins, Thomas P.
Journal or Publication Title: Inter-American Tropical Tuna Commission Bulletin
Volume: 6
Number: 3
Page Range: pp. 69-152
Date: 1961
Issuing Agency: Inter-American Tropical Tuna Commission
Additional Information: This article is bilingual and contains both Spanish and English translations.
Uncontrolled Keywords: density; fishing effort; yellowfin tuna; Neothunnus macropterus; skipjack tuna; Katsuwonus pelamis; eastern Tropical Pacific Ocean; densidad; esfuerzo de pesca; atunes aleta amarilla; barrilete; Océano Pacífico Oriental Tropical
Subjects: Fisheries
Item ID: 2580
Depositing User: Joan Parker
Date Deposited: 27 Aug 2009 12:09
Last Modified: 29 Sep 2011 18:55
URI: http://aquaticcommons.org/id/eprint/2580

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