The use of a bioeconomical model in the fishery of the red sea urchin, Strongylocentrotus franciscanus, from the northwestern coast of Baja California, Mexico

The use of a bioeconomical model in the fishery of the red sea urchin, Strongylocentrotus franciscanus, from the northwestern coast of Baja California, Mexico

The commercial fishery of the red sea urchin, Strongylocentrotus franciscanus, an important resource in Baja California, is showing signs of overexploitation. The yield per recruit and the Beverton and Holt optimization dynamic models were used to find the size at first capture that allows maximum p...

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Autores principales: Canedo-López, Y, Dreyfus-Léon, MJ, Cota-Villavicencio, A
Formato: Online
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 1999
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/720
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institution Ciencias Marinas
collection OJS
language eng
format Online
author Canedo-López, Y
Dreyfus-Léon, MJ
Cota-Villavicencio, A
spellingShingle Canedo-López, Y
Dreyfus-Léon, MJ
Cota-Villavicencio, A
The use of a bioeconomical model in the fishery of the red sea urchin, Strongylocentrotus franciscanus, from the northwestern coast of Baja California, Mexico
author_facet Canedo-López, Y
Dreyfus-Léon, MJ
Cota-Villavicencio, A
author_sort Canedo-López, Y
title The use of a bioeconomical model in the fishery of the red sea urchin, Strongylocentrotus franciscanus, from the northwestern coast of Baja California, Mexico
title_short The use of a bioeconomical model in the fishery of the red sea urchin, Strongylocentrotus franciscanus, from the northwestern coast of Baja California, Mexico
title_full The use of a bioeconomical model in the fishery of the red sea urchin, Strongylocentrotus franciscanus, from the northwestern coast of Baja California, Mexico
title_fullStr The use of a bioeconomical model in the fishery of the red sea urchin, Strongylocentrotus franciscanus, from the northwestern coast of Baja California, Mexico
title_full_unstemmed The use of a bioeconomical model in the fishery of the red sea urchin, Strongylocentrotus franciscanus, from the northwestern coast of Baja California, Mexico
title_sort use of a bioeconomical model in the fishery of the red sea urchin, strongylocentrotus franciscanus, from the northwestern coast of baja california, mexico
description The commercial fishery of the red sea urchin, Strongylocentrotus franciscanus, an important resource in Baja California, is showing signs of overexploitation. The yield per recruit and the Beverton and Holt optimization dynamic models were used to find the size at first capture that allows maximum profits and keeps the resource at a sustainable level for future generations. The biological parameters used were L = 155 mm, K = 0.22 and M = 0.22. The yield per recruit model suggests that to maximize yield it is necessary to increase the size of first capture to 105 mm with fishing mortality close to 0.65. The results of the dynamic optimization model indicated that the size of optimum catch and cohort biomass decrease as the discount rate increases, and this is reflected in a reduction of the yields. For discount rates lower than 5%, which is recommended for this fishery, the size of optimum catch is located between 110 and 116 mm. Both models suggest that the minimum legal size established by the Ministry of Natural Resources, Environment and Fishing (SEMARNAP) of 80 mm for the red sea urchin is below the size that allows obtaining optimal gains. In order to obtain large catches in the long term and to maximize the economical profits it is necessary to increase the size of first capture to 110 mm. For the discount rate of 0% a time interval was calculated in which fishing takes place with a maximum rate. The results indicate that the fishing season can be reduced from eight to four months.
publisher Iniversidad Autónoma de Baja California
publishDate 1999
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/720
_version_ 1715724002606972928
spelling oai:cienciasmarinas.com.mx:article-7202019-05-16T23:15:06Z The use of a bioeconomical model in the fishery of the red sea urchin, Strongylocentrotus franciscanus, from the northwestern coast of Baja California, Mexico Aplicaión de un modelo bioeconómico a la pesquería del erizo rojo, Strongylocentrotus franciscanus, de la costa noroccidental de Baja California, México Canedo-López, Y Dreyfus-Léon, MJ Cota-Villavicencio, A Strongylocentrotus franciscanus bioeconomic model fishery sea urchin sustainability Strongylocentrotus franciscanus modelo bioeconómico pesquería erizo rojo sustentabilidad The commercial fishery of the red sea urchin, Strongylocentrotus franciscanus, an important resource in Baja California, is showing signs of overexploitation. The yield per recruit and the Beverton and Holt optimization dynamic models were used to find the size at first capture that allows maximum profits and keeps the resource at a sustainable level for future generations. The biological parameters used were L = 155 mm, K = 0.22 and M = 0.22. The yield per recruit model suggests that to maximize yield it is necessary to increase the size of first capture to 105 mm with fishing mortality close to 0.65. The results of the dynamic optimization model indicated that the size of optimum catch and cohort biomass decrease as the discount rate increases, and this is reflected in a reduction of the yields. For discount rates lower than 5%, which is recommended for this fishery, the size of optimum catch is located between 110 and 116 mm. Both models suggest that the minimum legal size established by the Ministry of Natural Resources, Environment and Fishing (SEMARNAP) of 80 mm for the red sea urchin is below the size that allows obtaining optimal gains. In order to obtain large catches in the long term and to maximize the economical profits it is necessary to increase the size of first capture to 110 mm. For the discount rate of 0% a time interval was calculated in which fishing takes place with a maximum rate. The results indicate that the fishing season can be reduced from eight to four months. La pesquería del erizo rojo, Strongylocentrotus franciscanus, recurso importante de Baja California, ha dado muestras de sobreexplotación. Se aplicaron los modelos de rendimiento por recluta y de optimización dinámica de Beverton y Holt para encontrar la talla de primera captura que permite optimizar ganancias y tratar de asegurar la permanencia del recurso para futuras generaciones. Los parámetros biológicos usados fueron L = 155 mm, K = 0.22 y M = 0.22. El modelo de rendimiento por recluta sugiere que para maximizar los rendimientos es necesario incrementar la talla de primera captura a 105 mm y aplicar mortalidades por pesca cercanas a 0.65. El modelo de optimización dinámica indicó que la talla de captura óptima y la biomasa óptima disminuyen con el aumento de la tasa de descuento, lo que se refleja en una disminución de los rendimientos. Para tasas de descuento menores que 5%, que se recomiendan para esta pesquería, la talla óptima de captura está comprendida entre los 110 y 116 mm. Ambos modelos sugieren que la talla mínima legal establecida por la Secretaría del Medio Ambiente, Recursos Naturales y Pesca (SEMARNAP) de 80 mm para el erizo rojo está por debajo de la talla que permite optimizar las ganancias. Para lograr mayores capturas a largo plazo y maximizar el beneficio económico, es necesario incrementar la talla de primera captura a 110 mm. Para el caso de la tasa de descuento de 0% se calculó el intervalo de tiempo en el cual la pesca se efectúa a una tasa máxima. Los resultados indicaron que la temporada de pesca puede ser reducida de ocho a cuatro meses. Iniversidad Autónoma de Baja California 1999-03-06 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/720 10.7773/cm.v25i3.720 Ciencias Marinas; Vol. 25 No. 3 (1999); 325-344 Ciencias Marinas; Vol. 25 Núm. 3 (1999); 325-344 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/720/647

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