A data-limited approach to determine the status of the artisanal fishery of sea silverside in southern Chile
Artisanal fisheries are essential, but for most the status of the stock supporting the fishing activity remains unknown due to lack of data and difficult access to sampling. For example, the artisanal fishery of sea silverside Odontesthes (Austromenidia) regia, in the Los Lagos administrative regio...
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| Format: | Article |
| Language: | English |
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Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
2022-04-01
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| Series: | Marine and Fishery Sciences |
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| Online Access: | https://ojs.inidep.edu.ar/index.php/mafis/article/view/229 |
| _version_ | 1811235183600336896 |
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| author | Paulo Mora Guillermo Figueroa-Muñoz Luis Cubillos Poliana Strange-Olate |
| author_facet | Paulo Mora Guillermo Figueroa-Muñoz Luis Cubillos Poliana Strange-Olate |
| author_sort | Paulo Mora |
| collection | DOAJ |
| description |
Artisanal fisheries are essential, but for most the status of the stock supporting the fishing activity remains unknown due to lack of data and difficult access to sampling. For example, the artisanal fishery of sea silverside Odontesthes (Austromenidia) regia, in the Los Lagos administrative region of Chile, requires a data-limited approach to determine its status because the fishery administration has not invested in its monitoring. The approach consisted of estimating the spawning potential ratio (SPR) from length-frequency data collected in 2019 using length-based spawning potential ratio (LBSPR) and biological reference points using the only-catch optimized method (OCOM) to catch data covering from 1960 to 2020. In addition, five age-structured sea silverside populations were simulated considering uncertainty in recruitment and utilizing life-history parameters estimated by FishLife. According to LBSPR, the SPR was 0.58 (95% confidence intervals: 0.5-0.7), suggesting a fully exploited fishery status. The OCOM result was inconsistent with the life-history parameters and was discarded as a valid sea silverside stock assessment. The age-structured population simulations indicated evidence of a reduction in the spawning stock biomass close to 75% of the unexploited condition in 1960. Thus, the underexploited status reached a probability close to 49.4%, and the fully exploited status was 41.2%. The framework for a data-limited stock-assessment approach and results obtained here for the sea silverside are starting essential steps that may be emulated in other artisanal data-limited fisheries.
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| first_indexed | 2024-04-12T11:46:45Z |
| format | Article |
| id | doaj.art-f76c3dbb01274c4197d37e3dfd7ad21c |
| institution | Directory Open Access Journal |
| issn | 2683-7951 |
| language | English |
| last_indexed | 2024-04-12T11:46:45Z |
| publishDate | 2022-04-01 |
| publisher | Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) |
| record_format | Article |
| series | Marine and Fishery Sciences |
| spelling | doaj.art-f76c3dbb01274c4197d37e3dfd7ad21c2022-12-22T03:34:19ZengInstituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)Marine and Fishery Sciences2683-79512022-04-0135210.47193/mafis.3522022010508A data-limited approach to determine the status of the artisanal fishery of sea silverside in southern ChilePaulo Mora0Guillermo Figueroa-Muñoz1Luis Cubillos2Poliana Strange-Olate3Programa de Magíster en Ciencias Mención Pesquerías, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Chile. Instituto de Fomento Pesquero, Valparaíso, Chile.Programa de Magíster en Ciencias Mención Pesquerías, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Chile. Núcleo Milenio INVASAL and Genomics in Ecology, Evolution and Conservation Laboratory (GEECLAB), Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile. Departamento de Ciencias Biológicas y Químicas, Facultad de Recursos Naturales, Universidad Católica de Temuco, Rudecindo Ortega 02950, Temuco, Chile.Programa de Magíster en Ciencias Mención Pesquerías, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Chile. Centro COPAS COASTAL, Departamento de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, Concepción, Chile.Programa de Magíster en Ciencias Mención Pesquerías, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Chile. Artisanal fisheries are essential, but for most the status of the stock supporting the fishing activity remains unknown due to lack of data and difficult access to sampling. For example, the artisanal fishery of sea silverside Odontesthes (Austromenidia) regia, in the Los Lagos administrative region of Chile, requires a data-limited approach to determine its status because the fishery administration has not invested in its monitoring. The approach consisted of estimating the spawning potential ratio (SPR) from length-frequency data collected in 2019 using length-based spawning potential ratio (LBSPR) and biological reference points using the only-catch optimized method (OCOM) to catch data covering from 1960 to 2020. In addition, five age-structured sea silverside populations were simulated considering uncertainty in recruitment and utilizing life-history parameters estimated by FishLife. According to LBSPR, the SPR was 0.58 (95% confidence intervals: 0.5-0.7), suggesting a fully exploited fishery status. The OCOM result was inconsistent with the life-history parameters and was discarded as a valid sea silverside stock assessment. The age-structured population simulations indicated evidence of a reduction in the spawning stock biomass close to 75% of the unexploited condition in 1960. Thus, the underexploited status reached a probability close to 49.4%, and the fully exploited status was 41.2%. The framework for a data-limited stock-assessment approach and results obtained here for the sea silverside are starting essential steps that may be emulated in other artisanal data-limited fisheries. https://ojs.inidep.edu.ar/index.php/mafis/article/view/229data-poorassessmentsmall-scale fisherysimulationslife history |
| spellingShingle | Paulo Mora Guillermo Figueroa-Muñoz Luis Cubillos Poliana Strange-Olate A data-limited approach to determine the status of the artisanal fishery of sea silverside in southern Chile Marine and Fishery Sciences data-poor assessment small-scale fishery simulations life history |
| title | A data-limited approach to determine the status of the artisanal fishery of sea silverside in southern Chile |
| title_full | A data-limited approach to determine the status of the artisanal fishery of sea silverside in southern Chile |
| title_fullStr | A data-limited approach to determine the status of the artisanal fishery of sea silverside in southern Chile |
| title_full_unstemmed | A data-limited approach to determine the status of the artisanal fishery of sea silverside in southern Chile |
| title_short | A data-limited approach to determine the status of the artisanal fishery of sea silverside in southern Chile |
| title_sort | data limited approach to determine the status of the artisanal fishery of sea silverside in southern chile |
| topic | data-poor assessment small-scale fishery simulations life history |
| url | https://ojs.inidep.edu.ar/index.php/mafis/article/view/229 |
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