Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model

Autores
Garcia Asorey, Martin Ignacio; Escati Peñaloza, Gabriela; Parma, Ana María; Pascual, Miguel Alberto
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Standard fisheries models, based on average populations metrics are inadequate for analyzing recreational fisheries where fishing is size-selective and management objectives are related to preserving population size structure. Using data from the steelhead (Oncorhynchus mykiss) fishery in the Santa Cruz River (Patagonia, Argentina) we developed an individual-based harvest model to characterize the relationship between growth, mortality and size structure under different size-based harvest strategies. We evaluated fishery performance with indicators associated to catch-related components of anglers? satisfaction: yield (kg), population size, and availability of trophy-size fish. Large declines in trophy-size fish are to be expected at fishing mortalities much too light to cause a sizeable decline in recruitment from virgin values. When somatic growth is density independent, fish harvest occurs at the expense of other indicators associated to the quality of fishing experienced by individual anglers. Our results clearly expose such trade-offs, providing the kind of quantitative information managers need to decide where to operate. Size limits provide some tools to better accommodate harvest without compromising fishing quality. When preserving population size is favored over preserving trophy-size fish, minimum size limits constitute the best policies overall, whereas maximum size limits are best when the emphasis is on preserving trophy-size fish.
Fil: Garcia Asorey, Martin Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Escati Peñaloza, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Parma, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Materia
RECREATIONAL FISHERIES
MANAGEMENT OBJECTIVES
INDIVIDUAL-BASED MODEL
SIZE-SELECTIVE HARVEST
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/175909
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based modelGarcia Asorey, Martin IgnacioEscati Peñaloza, GabrielaParma, Ana MaríaPascual, Miguel AlbertoRECREATIONAL FISHERIESMANAGEMENT OBJECTIVESINDIVIDUAL-BASED MODELSIZE-SELECTIVE HARVESThttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Standard fisheries models, based on average populations metrics are inadequate for analyzing recreational fisheries where fishing is size-selective and management objectives are related to preserving population size structure. Using data from the steelhead (Oncorhynchus mykiss) fishery in the Santa Cruz River (Patagonia, Argentina) we developed an individual-based harvest model to characterize the relationship between growth, mortality and size structure under different size-based harvest strategies. We evaluated fishery performance with indicators associated to catch-related components of anglers? satisfaction: yield (kg), population size, and availability of trophy-size fish. Large declines in trophy-size fish are to be expected at fishing mortalities much too light to cause a sizeable decline in recruitment from virgin values. When somatic growth is density independent, fish harvest occurs at the expense of other indicators associated to the quality of fishing experienced by individual anglers. Our results clearly expose such trade-offs, providing the kind of quantitative information managers need to decide where to operate. Size limits provide some tools to better accommodate harvest without compromising fishing quality. When preserving population size is favored over preserving trophy-size fish, minimum size limits constitute the best policies overall, whereas maximum size limits are best when the emphasis is on preserving trophy-size fish.Fil: Garcia Asorey, Martin Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Escati Peñaloza, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Parma, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaNational Research Council Canada-NRC Research Press2011-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/175909Garcia Asorey, Martin Ignacio; Escati Peñaloza, Gabriela; Parma, Ana María; Pascual, Miguel Alberto; Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model; National Research Council Canada-NRC Research Press; Canadian Journal of Fisheries and Aquatic Sciences; 68; 11; 11-2011; 1892-19040706-652XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://cdnsciencepub.com/doi/10.1139/f2011-108info:eu-repo/semantics/altIdentifier/doi/10.1139/f2011-108info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:16:34Zoai:ri.conicet.gov.ar:11336/175909instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:16:34.62CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model
title Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model
spellingShingle Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model
Garcia Asorey, Martin Ignacio
RECREATIONAL FISHERIES
MANAGEMENT OBJECTIVES
INDIVIDUAL-BASED MODEL
SIZE-SELECTIVE HARVEST
title_short Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model
title_full Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model
title_fullStr Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model
title_full_unstemmed Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model
title_sort Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model
dc.creator.none.fl_str_mv Garcia Asorey, Martin Ignacio
Escati Peñaloza, Gabriela
Parma, Ana María
Pascual, Miguel Alberto
author Garcia Asorey, Martin Ignacio
author_facet Garcia Asorey, Martin Ignacio
Escati Peñaloza, Gabriela
Parma, Ana María
Pascual, Miguel Alberto
author_role author
author2 Escati Peñaloza, Gabriela
Parma, Ana María
Pascual, Miguel Alberto
author2_role author
author
author
dc.subject.none.fl_str_mv RECREATIONAL FISHERIES
MANAGEMENT OBJECTIVES
INDIVIDUAL-BASED MODEL
SIZE-SELECTIVE HARVEST
topic RECREATIONAL FISHERIES
MANAGEMENT OBJECTIVES
INDIVIDUAL-BASED MODEL
SIZE-SELECTIVE HARVEST
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Standard fisheries models, based on average populations metrics are inadequate for analyzing recreational fisheries where fishing is size-selective and management objectives are related to preserving population size structure. Using data from the steelhead (Oncorhynchus mykiss) fishery in the Santa Cruz River (Patagonia, Argentina) we developed an individual-based harvest model to characterize the relationship between growth, mortality and size structure under different size-based harvest strategies. We evaluated fishery performance with indicators associated to catch-related components of anglers? satisfaction: yield (kg), population size, and availability of trophy-size fish. Large declines in trophy-size fish are to be expected at fishing mortalities much too light to cause a sizeable decline in recruitment from virgin values. When somatic growth is density independent, fish harvest occurs at the expense of other indicators associated to the quality of fishing experienced by individual anglers. Our results clearly expose such trade-offs, providing the kind of quantitative information managers need to decide where to operate. Size limits provide some tools to better accommodate harvest without compromising fishing quality. When preserving population size is favored over preserving trophy-size fish, minimum size limits constitute the best policies overall, whereas maximum size limits are best when the emphasis is on preserving trophy-size fish.
Fil: Garcia Asorey, Martin Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Escati Peñaloza, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Parma, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
description Standard fisheries models, based on average populations metrics are inadequate for analyzing recreational fisheries where fishing is size-selective and management objectives are related to preserving population size structure. Using data from the steelhead (Oncorhynchus mykiss) fishery in the Santa Cruz River (Patagonia, Argentina) we developed an individual-based harvest model to characterize the relationship between growth, mortality and size structure under different size-based harvest strategies. We evaluated fishery performance with indicators associated to catch-related components of anglers? satisfaction: yield (kg), population size, and availability of trophy-size fish. Large declines in trophy-size fish are to be expected at fishing mortalities much too light to cause a sizeable decline in recruitment from virgin values. When somatic growth is density independent, fish harvest occurs at the expense of other indicators associated to the quality of fishing experienced by individual anglers. Our results clearly expose such trade-offs, providing the kind of quantitative information managers need to decide where to operate. Size limits provide some tools to better accommodate harvest without compromising fishing quality. When preserving population size is favored over preserving trophy-size fish, minimum size limits constitute the best policies overall, whereas maximum size limits are best when the emphasis is on preserving trophy-size fish.
publishDate 2011
dc.date.none.fl_str_mv 2011-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/175909
Garcia Asorey, Martin Ignacio; Escati Peñaloza, Gabriela; Parma, Ana María; Pascual, Miguel Alberto; Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model; National Research Council Canada-NRC Research Press; Canadian Journal of Fisheries and Aquatic Sciences; 68; 11; 11-2011; 1892-1904
0706-652X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/175909
identifier_str_mv Garcia Asorey, Martin Ignacio; Escati Peñaloza, Gabriela; Parma, Ana María; Pascual, Miguel Alberto; Conflicting objectives in trophy trout recreational fisheries: evaluating trade-offs using an individual-based model; National Research Council Canada-NRC Research Press; Canadian Journal of Fisheries and Aquatic Sciences; 68; 11; 11-2011; 1892-1904
0706-652X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://cdnsciencepub.com/doi/10.1139/f2011-108
info:eu-repo/semantics/altIdentifier/doi/10.1139/f2011-108
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv National Research Council Canada-NRC Research Press
publisher.none.fl_str_mv National Research Council Canada-NRC Research Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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