Analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern Pacific

Analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern Pacific

Around 80% of the boats in the Mexican tuna fleet are purse seiners. These boats have different sizes and consequently different ranges to produce fishing mortality. The relative fishing power is estimated to minimize these differences and use it to standardize fishing effort as an index of fishing...

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Главные авторы: Ortega-García, S, Muhlia-Melo, A
Формат: Online
Язык:eng
Опубликовано: Iniversidad Autónoma de Baja California 1992
Online-ссылка:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/883
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spelling oai:cienciasmarinas.com.mx:article-8832020-06-03T01:07:34Z Analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern Pacific Análisis del poder relativo de pesca de la flota atunera mexicana de cerco que opera en el Pacífico oriental Ortega-García, S Muhlia-Melo, A n/a n/a Around 80% of the boats in the Mexican tuna fleet are purse seiners. These boats have different sizes and consequently different ranges to produce fishing mortality. The relative fishing power is estimated to minimize these differences and use it to standardize fishing effort as an index of fishing efficiency. Logbook information of the purse seine fleet of Mexico from 1984 to 1986 and as CPUE catch/trip, catch/set, catch/day of absence and catch/day of fishing, were used to categorize this fleet. For each CPUE, 6, 4, 2 and 2 categories were found, respectively. The relative fishing power of each category was calculated. Boats of 1,090 metric tons of carrying capacity belong to the more efficient category. Fishing success is related to the type of fishing, aerial help and fishing areas. The results of this work show that the more efficient boats fish in traditional as well as in more oceanic waters, set more often with dolphin and use aerial help. La flota atunera mexicana está constituida en más de un 80% por embarcaciones cuyo arte de pesca es la red de cerco. Estas unidades son de diferentes dimensiones y por tanto con diferente capacidad de producir mortalidad por pesca, por lo que es necesario el análisis del poder relativo de las mismas, el cual, además de poder utilizarlo en la normalización del esfuerzo, es un índice de la eficiencia para pescar de las embarcaciones. Utilizando la información proveniente de las bitácoras de pesca de la flota atunera mexicana de cerco de 1984 a 1986 y como CPUE la captura/viaje, captura/lance, captura/día de ausencia y captura/día de pesca, se categorizó la flota determinándose 6, 4, 2 y 2 categorías, respectivamente. Se calcularon los poderes relativos de pesca de cada categoría, de las cuales las que incluyen a los barcos de 1,090 toneladas de capacidad de acarreo son las que tuvieron una mayor eficiencia. El éxito de pesca de las embarcaciones se relacionó con el tipo de pesca, área de operación y la ayuda aérea, encontrando que los barcos con mayor eficiencia para pescar, además de operar en las zonas tradicionales, pescan en aguas más oceánicas, efectúan un mayor número de lances sobre cardúmenes asociados a delfines y reciben ayuda aérea en la mayoría de ellos.   Iniversidad Autónoma de Baja California 1992-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/883 10.7773/cm.v18i1.883 Ciencias Marinas; Vol. 18 No. 1 (1992); 55-78 Ciencias Marinas; Vol. 18 Núm. 1 (1992); 55-78 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/883/805
institution Ciencias Marinas
collection OJS
language eng
format Online
author Ortega-García, S
Muhlia-Melo, A
spellingShingle Ortega-García, S
Muhlia-Melo, A
Analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern Pacific
author_facet Ortega-García, S
Muhlia-Melo, A
author_sort Ortega-García, S
title Analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern Pacific
title_short Analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern Pacific
title_full Analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern Pacific
title_fullStr Analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern Pacific
title_full_unstemmed Analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern Pacific
title_sort analysis of the relative fishing power of the mexican purse seine fleet operating in the eastern pacific
description Around 80% of the boats in the Mexican tuna fleet are purse seiners. These boats have different sizes and consequently different ranges to produce fishing mortality. The relative fishing power is estimated to minimize these differences and use it to standardize fishing effort as an index of fishing efficiency. Logbook information of the purse seine fleet of Mexico from 1984 to 1986 and as CPUE catch/trip, catch/set, catch/day of absence and catch/day of fishing, were used to categorize this fleet. For each CPUE, 6, 4, 2 and 2 categories were found, respectively. The relative fishing power of each category was calculated. Boats of 1,090 metric tons of carrying capacity belong to the more efficient category. Fishing success is related to the type of fishing, aerial help and fishing areas. The results of this work show that the more efficient boats fish in traditional as well as in more oceanic waters, set more often with dolphin and use aerial help.
publisher Iniversidad Autónoma de Baja California
publishDate 1992
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/883
_version_ 1715724023447420928

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