Harvest status and fishery management perspectives for the striped marlin (Kajikia audax) in the Mexican Pacific Ocean

Harvest status and fishery management perspectives for the striped marlin (Kajikia audax) in the Mexican Pacific Ocean

Stock assessment of the striped marlin from the Mexican Pacific coast was done with historical (1963–2014) catch and effort data provided by commercial and recreational fleets, including bycatch data. Eight fishery-independent indices of relative abundance were used to fit a biomass dynamic model by...

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Autores principales: Díaz-Uribe, J Gabriel, Klett-Traulsen, Alexander, Morales-Bojórquez, Enrique, Aguirre-Villaseñor, Hugo, Dreyfus-León, Michel, Santana-Hernández, Heriberto, Zúñiga-Flores, Marcela S
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Publicado: Iniversidad Autónoma de Baja California 2023
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3362
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institution Ciencias Marinas
collection OJS
language eng
spa
format Online
author Díaz-Uribe, J Gabriel
Klett-Traulsen, Alexander
Morales-Bojórquez, Enrique
Aguirre-Villaseñor, Hugo
Dreyfus-León, Michel
Santana-Hernández, Heriberto
Zúñiga-Flores, Marcela S
spellingShingle Díaz-Uribe, J Gabriel
Klett-Traulsen, Alexander
Morales-Bojórquez, Enrique
Aguirre-Villaseñor, Hugo
Dreyfus-León, Michel
Santana-Hernández, Heriberto
Zúñiga-Flores, Marcela S
Harvest status and fishery management perspectives for the striped marlin (Kajikia audax) in the Mexican Pacific Ocean
author_facet Díaz-Uribe, J Gabriel
Klett-Traulsen, Alexander
Morales-Bojórquez, Enrique
Aguirre-Villaseñor, Hugo
Dreyfus-León, Michel
Santana-Hernández, Heriberto
Zúñiga-Flores, Marcela S
author_sort Díaz-Uribe, J Gabriel
title Harvest status and fishery management perspectives for the striped marlin (Kajikia audax) in the Mexican Pacific Ocean
title_short Harvest status and fishery management perspectives for the striped marlin (Kajikia audax) in the Mexican Pacific Ocean
title_full Harvest status and fishery management perspectives for the striped marlin (Kajikia audax) in the Mexican Pacific Ocean
title_fullStr Harvest status and fishery management perspectives for the striped marlin (Kajikia audax) in the Mexican Pacific Ocean
title_full_unstemmed Harvest status and fishery management perspectives for the striped marlin (Kajikia audax) in the Mexican Pacific Ocean
title_sort harvest status and fishery management perspectives for the striped marlin (kajikia audax) in the mexican pacific ocean
description Stock assessment of the striped marlin from the Mexican Pacific coast was done with historical (1963–2014) catch and effort data provided by commercial and recreational fleets, including bycatch data. Eight fishery-independent indices of relative abundance were used to fit a biomass dynamic model by maximum likelihood. For the most recent period (2015–2019), stock status was evaluated through simulations with the fitted model and available catch-per-unit-effort data of the recreational fleets as reference framework. Results indicated that up until 2014, striped marlin abundance showed 3 different trends. The first one was a decreasing trend from 1964 to 1977, where the catch and effort of commercial fleets exceeded the maximum sustainable yield (MSY) and the level of effort to reach MSY, respectively. The second one occurred from 1977 to 1990, and it was a stable trend with low abundance, less than the abundance when MSY is reached; this change was related to the reduction of commercial effort, although catches greater than the MSY were observed. The third one occurred from 1990 to 2014, and it showed increasing abundance due to the cessation of commercial fleets. This increase, however, has become slower because of the development of the recreational fishery and the increased bycatch. After 2014, the indicator estimated with the data from the recreational fleets suggested a shift in abundance; according to simulations, the fishing mortality was insufficient to explain this change. It is hypothesized that the natural mortality of striped marlin has been high since the mid-2010s. Conditions that could influence this situation and their implications on fishery management are discussed.
publisher Iniversidad Autónoma de Baja California
publishDate 2023
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3362
_version_ 1792095485091119104
spelling oai:cienciasmarinas.com.mx:article-33622024-02-08T22:54:21Z Harvest status and fishery management perspectives for the striped marlin (Kajikia audax) in the Mexican Pacific Ocean Estado de explotación y perspectivas de manejo pesquero del marlin rayado (Kajikia audax) en el océano Pacífico mexicano Díaz-Uribe, J Gabriel Klett-Traulsen, Alexander Morales-Bojórquez, Enrique Aguirre-Villaseñor, Hugo Dreyfus-León, Michel Santana-Hernández, Heriberto Zúñiga-Flores, Marcela S marlin rayado Kajikia audax modelo dinámico de biomasa múltiples indicadores striped marlin Kajikia audax dynamic biomass model multiple indicators Stock assessment of the striped marlin from the Mexican Pacific coast was done with historical (1963–2014) catch and effort data provided by commercial and recreational fleets, including bycatch data. Eight fishery-independent indices of relative abundance were used to fit a biomass dynamic model by maximum likelihood. For the most recent period (2015–2019), stock status was evaluated through simulations with the fitted model and available catch-per-unit-effort data of the recreational fleets as reference framework. Results indicated that up until 2014, striped marlin abundance showed 3 different trends. The first one was a decreasing trend from 1964 to 1977, where the catch and effort of commercial fleets exceeded the maximum sustainable yield (MSY) and the level of effort to reach MSY, respectively. The second one occurred from 1977 to 1990, and it was a stable trend with low abundance, less than the abundance when MSY is reached; this change was related to the reduction of commercial effort, although catches greater than the MSY were observed. The third one occurred from 1990 to 2014, and it showed increasing abundance due to the cessation of commercial fleets. This increase, however, has become slower because of the development of the recreational fishery and the increased bycatch. After 2014, the indicator estimated with the data from the recreational fleets suggested a shift in abundance; according to simulations, the fishing mortality was insufficient to explain this change. It is hypothesized that the natural mortality of striped marlin has been high since the mid-2010s. Conditions that could influence this situation and their implications on fishery management are discussed. Se evaluó el estado de explotación del marlin rayado en el Pacífico mexicano con datos históricos (1963-2014) de captura y esfuerzo de flotas comerciales y deportivas, incluso datos de captura incidental. Se estimaron 8 indicadores de abundancia relativa independientes para ajustar un modelo dinámico de biomasa por máxima verosimilitud. Para el periodo más reciente (2015-2019), se evaluó el estado de explotación a través de simulaciones hechas con el modelo ajustado, y se tomó como referencia los datos disponibles de captura por unidad de esfuerzo de las flotas deportivas. Los resultados indicaron que hasta 2014, la abundancia del marlin rayado ha pasado por 3 etapas diferentes. La primera fue una tendencia decreciente de 1964 a 1977, donde las capturas y el esfuerzo de las flotas comerciales excedieron, respectivamente, el máximo rendimiento sostenible (MRS) y el esfuerzo para alcanzar el MRS. La segunda ocurrió de 1977 a 1990, y fue una tendencia estable de baja abundancia, inferior a la abundancia cuando se alcanza el MRS; este cambio se relacionó con la reducción del esfuerzo de las flotas comerciales, aunque con capturas superiores al MRS. La tercera ocurrió de 1990 a 2014, y mostró una tendencia al incremento de la abundancia, debido al cese de operaciones de las flotas comerciales. Este incremento ha sido lento debido al desarrollo de la pesca deportiva y al incremento de las capturas incidentales. Después de 2014, el indicador para las flotas deportivas sugirió un cambio en la abundancia; de acuerdo con las simulaciones, la mortalidad por pesca fue insuficiente para explicar dicho cambio. Se plantea como hipótesis que la mortalidad natural del marlin rayado ha sido alta desde la década de 2010. Se discuten las condiciones que pudieron influir en esta situación y sus implicaciones en el manejo pesquero.   Iniversidad Autónoma de Baja California 2023-10-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf text/xml text/xml https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3362 10.7773/cm.y2023.3362 Ciencias Marinas; Vol. 49 (2023) Ciencias Marinas; Vol. 49 (2023) 2395-9053 0185-3880 eng spa https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3362/420420755 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3362/420420885 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3362/420420886 Copyright (c) 2023 J Gabriel Díaz-Uribe, Alexander Klett-Traulsen, Enrique Morales-Bojórquez, Hugo Aguirre-Villaseñor, Michel Dreyfus-León, Heriberto Santana-Hernández, Marcela S Zúñiga-Flores https://creativecommons.org/licenses/by/4.0

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