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Spatiotemporal distribution of the reproductive potential of the female squat lobster (Pleuroncodes monodon) stock in central and southern Chile Distribución espaciotemporal del potencial reproductivo del stock de hembras de langostino colorado (Pleuroncodes monodon) en la zona centro-sur de Chile
Indexado
Scopus SCOPUS_ID:85168275829
DOI 10.7773/CM.Y2023.3321
Año 2023
Tipo

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



Pleuroncodes monodon is 1 of the 3 species sustaining the demersal crustacean fisheries in Chile, with landings that have had strong variations and a very slow recovery in the past decade. The southern fishing unit has been in the recovery status since 2017, following several years of intense overfishing, which affected the reproductive potential and the geographical distribution of the stock. In this study, fishing haul information from 14 direct evaluation surveys of P. monodon were used to estimate, by using geostatistics, the density of the reproductive potential of the female stock in central and southern Chile (32.0° S to 37.0° S) from 2005 to 2018. The annual mean potential eggs was estimated at 78,055.0 million potential eggs, with a mean density of 74.0 million eggs per square kilometer. Two areas of aggregation of the reproductive potential are recognized, one between 33.5° S and 34.5° S (northern zone) and the other between 35.5° S and 36.5° S (southern zone). The mean density of potential eggs was higher in the northern zone than in the southern zone, although in the southern zone there were foci with values close to 100 million eggs per square kilometer, which was not the case for the northern zone. The P. monodon population comes from a single breeding area located in the southern zone. In the 2008–2012 period, the female stock showed a net migration of 226.4 km northward (from 36°20ʹ52.5ʺ S to 34°18ʹ39.1ʺ S), although it was later reduced southward by the fishing pressure.

Revista



Revista ISSN
Ciencias Marinas 0185-3880

Métricas Externas



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Disciplinas de Investigación



WOS
Marine & Freshwater Biology
Scopus
Aquatic Science
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Barros, Mónica E. - Universidad de Concepción - Chile
2 Alarcón, Rubén - Universidad de Concepción - Chile
Centro de Investigacion en Ecosistemas de la Patagonia - Chile
3 Arancibia, Hugo Hombre Asesorías Ocean Technology and Aquaculture Chile - Chile

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Financiamiento



Fuente
Universidad de Concepción
Instituto de Fomento Pesquero
Fondo de Investigacion Pesquera y Acuicultura
Agencia Nacional de Investigación y Desarrollo
Universidad de Concepción y a la Agencia Nacional de Investigación y Desarrollo de Chile

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Agradecimientos



Agradecimiento
We thank the Dirección de Postgrado of the Universidad de Concepción and the Agencia Nacional de Investigación y Desarrollo of Chile for their financial support through the national doctoral scholarship F21160713. We also thank the Fondo de Investigación Pesquera y Acuicultura (www.sub-pesca.cl) and the Ministerio de Economía through the Insti-tuto de Fomento Pesquero (www.ifop.cl), who financed the evaluation campaigns for demersal crustaceans from 1993 to 2013 and from 2014 to 2018, respectively, and provided the information. The authors of this work declare that there is no conflict of interest.
We thank the Dirección de Postgrado of the Universidad de Concepción and the Agencia Nacional de Investigación y Desarrollo of Chile for their financial support through the national doctoral scholarship F21160713. We also thank the Fondo de Investigación Pesquera y Acuicultura (www.sub-pesca.cl) and the Ministerio de Economía through the Insti-tuto de Fomento Pesquero (www.ifop.cl), who financed the evaluation campaigns for demersal crustaceans from 1993 to 2013 and from 2014 to 2018, respectively, and provided the information. The authors of this work declare that there is no conflict of interest.

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