Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis

Autores
Hune, Matias; Haro, Daniela; Davis, Ernesto; Gutiérrez, David; Anderson, Christopher Brian; Sabat, Pablo
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We used a combination of stomach content and stable isotope analyses to assess the trophic interactions and feeding habits of two different salmonid species, brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) in the Serrano River (Magellan and the Chilean Antarctic Region). We found a high dietary niche overlap, which was supported by Schoener’s index and stable isotopes Bayesian ellipses. The diet was dominated by the amphipod Hyalella spp. in both species. Nonetheless, evidence suggests that O. mykiss has a more generalist feeding strategy than S. trutta. The dietary breadth indices and the isotopic niche area, which were broader for O. mykiss than S. trutta, supported this scenario. This study increases our understanding on the trophic relationships among these introduced trout cohabiting the river and their possible effects in freshwater ecosystems from southern Chile.
Fil: Hune, Matias. Centro de Investigación Para la Conservación de Los Eco; Chile
Fil: Haro, Daniela. Universidad Santo Tomás (ust);
Fil: Davis, Ernesto. Centro de Investigación Para la Conservación de Los Eco; Chile
Fil: Gutiérrez, David. No especifíca;
Fil: Anderson, Christopher Brian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; Argentina
Fil: Sabat, Pablo. Universidad de Chile; Chile
Materia
DIET
EXOTIC SPECIES
MAGELLAN REGION
ONCORHYNCHUS MYKISS
SALMO TRUTTA
TROPHIC ECOLOGY
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:11336/216422
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/216422
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysisSobreposición de nicho en truchas simpátricas introducidas en un río en la Patagonia austral: evidencia mediante análisis de contenido estomacal e isótopos establesHune, MatiasHaro, DanielaDavis, ErnestoGutiérrez, DavidAnderson, Christopher BrianSabat, PabloDIETEXOTIC SPECIESMAGELLAN REGIONONCORHYNCHUS MYKISSSALMO TRUTTATROPHIC ECOLOGYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We used a combination of stomach content and stable isotope analyses to assess the trophic interactions and feeding habits of two different salmonid species, brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) in the Serrano River (Magellan and the Chilean Antarctic Region). We found a high dietary niche overlap, which was supported by Schoener’s index and stable isotopes Bayesian ellipses. The diet was dominated by the amphipod Hyalella spp. in both species. Nonetheless, evidence suggests that O. mykiss has a more generalist feeding strategy than S. trutta. The dietary breadth indices and the isotopic niche area, which were broader for O. mykiss than S. trutta, supported this scenario. This study increases our understanding on the trophic relationships among these introduced trout cohabiting the river and their possible effects in freshwater ecosystems from southern Chile.Fil: Hune, Matias. Centro de Investigación Para la Conservación de Los Eco; ChileFil: Haro, Daniela. Universidad Santo Tomás (ust);Fil: Davis, Ernesto. Centro de Investigación Para la Conservación de Los Eco; ChileFil: Gutiérrez, David. No especifíca;Fil: Anderson, Christopher Brian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; ArgentinaFil: Sabat, Pablo. Universidad de Chile; ChilePan-American Journal of Aquatic Sciences2022-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/216422Hune, Matias; Haro, Daniela; Davis, Ernesto; Gutiérrez, David; Anderson, Christopher Brian; et al.; Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis; Pan-American Journal of Aquatic Sciences; Pan-American Journal of Aquatic Sciences; 17; 3; 12-2022; 304-3121809-9009CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.54451/PanamJAS.17.3.304info:eu-repo/semantics/altIdentifier/url/http://panamjas.org/pdf_artigos/PANAMJAS_17(3)_304-312.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:02:16Zoai:ri.conicet.gov.ar:11336/216422instacron: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:34982025-09-29 10:02:17.112CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis
Sobreposición de nicho en truchas simpátricas introducidas en un río en la Patagonia austral: evidencia mediante análisis de contenido estomacal e isótopos estables
title Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis
spellingShingle Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis
Hune, Matias
DIET
EXOTIC SPECIES
MAGELLAN REGION
ONCORHYNCHUS MYKISS
SALMO TRUTTA
TROPHIC ECOLOGY
title_short Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis
title_full Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis
title_fullStr Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis
title_full_unstemmed Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis
title_sort Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis
dc.creator.none.fl_str_mv Hune, Matias
Haro, Daniela
Davis, Ernesto
Gutiérrez, David
Anderson, Christopher Brian
Sabat, Pablo
author Hune, Matias
author_facet Hune, Matias
Haro, Daniela
Davis, Ernesto
Gutiérrez, David
Anderson, Christopher Brian
Sabat, Pablo
author_role author
author2 Haro, Daniela
Davis, Ernesto
Gutiérrez, David
Anderson, Christopher Brian
Sabat, Pablo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv DIET
EXOTIC SPECIES
MAGELLAN REGION
ONCORHYNCHUS MYKISS
SALMO TRUTTA
TROPHIC ECOLOGY
topic DIET
EXOTIC SPECIES
MAGELLAN REGION
ONCORHYNCHUS MYKISS
SALMO TRUTTA
TROPHIC ECOLOGY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We used a combination of stomach content and stable isotope analyses to assess the trophic interactions and feeding habits of two different salmonid species, brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) in the Serrano River (Magellan and the Chilean Antarctic Region). We found a high dietary niche overlap, which was supported by Schoener’s index and stable isotopes Bayesian ellipses. The diet was dominated by the amphipod Hyalella spp. in both species. Nonetheless, evidence suggests that O. mykiss has a more generalist feeding strategy than S. trutta. The dietary breadth indices and the isotopic niche area, which were broader for O. mykiss than S. trutta, supported this scenario. This study increases our understanding on the trophic relationships among these introduced trout cohabiting the river and their possible effects in freshwater ecosystems from southern Chile.
Fil: Hune, Matias. Centro de Investigación Para la Conservación de Los Eco; Chile
Fil: Haro, Daniela. Universidad Santo Tomás (ust);
Fil: Davis, Ernesto. Centro de Investigación Para la Conservación de Los Eco; Chile
Fil: Gutiérrez, David. No especifíca;
Fil: Anderson, Christopher Brian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; Argentina
Fil: Sabat, Pablo. Universidad de Chile; Chile
description We used a combination of stomach content and stable isotope analyses to assess the trophic interactions and feeding habits of two different salmonid species, brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) in the Serrano River (Magellan and the Chilean Antarctic Region). We found a high dietary niche overlap, which was supported by Schoener’s index and stable isotopes Bayesian ellipses. The diet was dominated by the amphipod Hyalella spp. in both species. Nonetheless, evidence suggests that O. mykiss has a more generalist feeding strategy than S. trutta. The dietary breadth indices and the isotopic niche area, which were broader for O. mykiss than S. trutta, supported this scenario. This study increases our understanding on the trophic relationships among these introduced trout cohabiting the river and their possible effects in freshwater ecosystems from southern Chile.
publishDate 2022
dc.date.none.fl_str_mv 2022-12
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/11336/216422
Hune, Matias; Haro, Daniela; Davis, Ernesto; Gutiérrez, David; Anderson, Christopher Brian; et al.; Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis; Pan-American Journal of Aquatic Sciences; Pan-American Journal of Aquatic Sciences; 17; 3; 12-2022; 304-312
1809-9009
CONICET Digital
CONICET
url http://hdl.handle.net/11336/216422
identifier_str_mv Hune, Matias; Haro, Daniela; Davis, Ernesto; Gutiérrez, David; Anderson, Christopher Brian; et al.; Niche overlap in sympatric introduced trout from a southern Patagonian river: evidence from stomach contents and stable isotope analysis; Pan-American Journal of Aquatic Sciences; Pan-American Journal of Aquatic Sciences; 17; 3; 12-2022; 304-312
1809-9009
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.54451/PanamJAS.17.3.304
info:eu-repo/semantics/altIdentifier/url/http://panamjas.org/pdf_artigos/PANAMJAS_17(3)_304-312.pdf
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
dc.publisher.none.fl_str_mv Pan-American Journal of Aquatic Sciences
publisher.none.fl_str_mv Pan-American Journal of Aquatic Sciences
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 13.070432

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