Evaluation of the fishery of the brown shrimp Penaeus aztecus of the mexican littoral of the northwest Gulf of Mexico

Evaluation of the fishery of the brown shrimp Penaeus aztecus of the mexican littoral of the northwest Gulf of Mexico

Stock assessment of the brown shrimp (Penaeus azteca) from the northwest Gulf of Mexico is developed using monthly data from commercial catches from 1974 to 1982. Growth parameters from the von Bertalanffy equation were as follows: Kmin = 0.142 m–1 to Kmax = 0.1812 m–1; L∞min = 214 mm to L∞max = 236...

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Autores principales: Castro, RG, Arreguín-Sánchez, F
Formato: Online
Idioma:eng
Publicado: Iniversidad Autónoma de Baja California 1991
Acceso en liña:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/840
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spelling oai:cienciasmarinas.com.mx:article-8402020-09-11T00:13:29Z Evaluation of the fishery of the brown shrimp Penaeus aztecus of the mexican littoral of the northwest Gulf of Mexico Evaluación de la pesquería de camarón café Penaeus aztecus del litoral mexicano del noroeste del Golfo de México Castro, RG Arreguín-Sánchez, F n/a n/a Stock assessment of the brown shrimp (Penaeus azteca) from the northwest Gulf of Mexico is developed using monthly data from commercial catches from 1974 to 1982. Growth parameters from the von Bertalanffy equation were as follows: Kmin = 0.142 m–1 to Kmax = 0.1812 m–1; L∞min = 214 mm to L∞max = 236 mm. Mortality rates were obtained directly from the identified cohorts through the catch curve and the weighted average of the amount of fishing applied on each cohort; results were as follows: total mortality, Zmin(1981) = 0.8494 to Zmax(1974) = 1.240; fishing mortality, Fmin( 1981) = 0.3786 to Fmax(1974) = 0.646; and natural mortality, Mmin(1978) = 0.415 to Mmax(1974) = 0.594. Catchability estimations mere: qmin(1975) = 0.0012 to qmax(1978) = 0.0021. Exploitation rate indicates a reduction of 30% of the fishing intensity, for the last two years, compared with the previous ones. From these years (1981 and 1982), fishery was acting under the maximum sustainable yield level. Utilizando información mensual de descargas comerciales para el período de 1974 a 1982 se hace una estimación del estado de explotación del recurso camarón café (Penaeus azteca) de la costa noroccidental del Golfo de México. Las estimaciones de crecimiento individual representado por el modelo de von Bertalanffy fueron: Kmin = 0.142 m–1 a Kmax = 0.1812 m–1; L∞min = 214 mm a L∞max = 236 mm. Las estimaciones de mortalidad fueron obtenidas directamente de la identificación de las cohortes y el esfuerzo promedio aplicado a cada una de ellas con los siguientes resultados: mortalidad total, Zmin(1981) = 0.8494 a Zmax(1974) = 1.240; mortalidad por pesca, Fmin( 1981) = 0.3786 a Fmax(1974) = 0.646; y la mortalidad natural, Mmin(1978) = 0.415 a Mmax(1974) = 0.594. Las estimaciones encontradas de capturabilidad fueron qmin(1975) = 0.0012 a qmax(1978) = 0.0021. La tasa de explotación obtenida de estos resultados indican que durante 1981 y 1982 la explotación decreció en un 30% situando los recursos por debajo del nivel de rendimiento máximo sostenido. Iniversidad Autónoma de Baja California 1991-03-06 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/840 10.7773/cm.v17i4.840 Ciencias Marinas; Vol. 17 No. 4 (1991); 147-159 Ciencias Marinas; Vol. 17 Núm. 4 (1991); 147-159 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/840/762
institution Ciencias Marinas
collection OJS
language eng
format Online
author Castro, RG
Arreguín-Sánchez, F
spellingShingle Castro, RG
Arreguín-Sánchez, F
Evaluation of the fishery of the brown shrimp Penaeus aztecus of the mexican littoral of the northwest Gulf of Mexico
author_facet Castro, RG
Arreguín-Sánchez, F
author_sort Castro, RG
title Evaluation of the fishery of the brown shrimp Penaeus aztecus of the mexican littoral of the northwest Gulf of Mexico
title_short Evaluation of the fishery of the brown shrimp Penaeus aztecus of the mexican littoral of the northwest Gulf of Mexico
title_full Evaluation of the fishery of the brown shrimp Penaeus aztecus of the mexican littoral of the northwest Gulf of Mexico
title_fullStr Evaluation of the fishery of the brown shrimp Penaeus aztecus of the mexican littoral of the northwest Gulf of Mexico
title_full_unstemmed Evaluation of the fishery of the brown shrimp Penaeus aztecus of the mexican littoral of the northwest Gulf of Mexico
title_sort evaluation of the fishery of the brown shrimp penaeus aztecus of the mexican littoral of the northwest gulf of mexico
description Stock assessment of the brown shrimp (Penaeus azteca) from the northwest Gulf of Mexico is developed using monthly data from commercial catches from 1974 to 1982. Growth parameters from the von Bertalanffy equation were as follows: Kmin = 0.142 m–1 to Kmax = 0.1812 m–1; L∞min = 214 mm to L∞max = 236 mm. Mortality rates were obtained directly from the identified cohorts through the catch curve and the weighted average of the amount of fishing applied on each cohort; results were as follows: total mortality, Zmin(1981) = 0.8494 to Zmax(1974) = 1.240; fishing mortality, Fmin( 1981) = 0.3786 to Fmax(1974) = 0.646; and natural mortality, Mmin(1978) = 0.415 to Mmax(1974) = 0.594. Catchability estimations mere: qmin(1975) = 0.0012 to qmax(1978) = 0.0021. Exploitation rate indicates a reduction of 30% of the fishing intensity, for the last two years, compared with the previous ones. From these years (1981 and 1982), fishery was acting under the maximum sustainable yield level.
publisher Iniversidad Autónoma de Baja California
publishDate 1991
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/840
_version_ 1715724017863753728

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