Niche partitioning among demersal marine fishes at the southern tip of South America

Autores
Alvarez, C. D.; Giussi, Analía Rosa; Botto, Florencia
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Niche differentiation is a means by which species can coexist and avoid competition. In marine food webs, large demersal fish often couple different trophic pathways and can be targets of valuable fisheries. This is the case for long tail hake Macruronus magellanicus, Patagonian toothfish Dissostichus eleginoides, southern blue whiting Micromesistius australis, and southern hake Merluccius australis, which coexist in the southernmost region of the southwestern Atlantic Ocean. In this study, C and N stable isotope and stomach content analyses were used to evaluate possible niche partitioning among these 4 species. Long tail hake and southern blue whiting mainly eat crustaceans, with great overlap in their diet spectra, but they differentiate in their spatial distribution. Southern hake and Patagonian toothfish mainly feed on fish, including the other 2 species, and exploit prey from a broad spatial area. These results suggest a spatial compartmentation of the food web at lower trophic levels, with demersal fish at the higher levels linking distant compartments. Therefore, results of this study show similarities and differences among these 4 demersal fish species, in the trophic and spatial dimensions of their niches, suggesting niche differentiation and probably different roles in the food web.
Fil: Alvarez, C. D.. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
Fil: Giussi, Analía Rosa. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
Fil: Botto, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Materia
Niche partitioning
Demersal fish
δ13C δ15N
Southwestern Atlantic Ocean
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:11336/261569
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Niche partitioning among demersal marine fishes at the southern tip of South AmericaAlvarez, C. D.Giussi, Analía RosaBotto, FlorenciaNiche partitioningDemersal fishδ13C δ15NSouthwestern Atlantic Oceanhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Niche differentiation is a means by which species can coexist and avoid competition. In marine food webs, large demersal fish often couple different trophic pathways and can be targets of valuable fisheries. This is the case for long tail hake Macruronus magellanicus, Patagonian toothfish Dissostichus eleginoides, southern blue whiting Micromesistius australis, and southern hake Merluccius australis, which coexist in the southernmost region of the southwestern Atlantic Ocean. In this study, C and N stable isotope and stomach content analyses were used to evaluate possible niche partitioning among these 4 species. Long tail hake and southern blue whiting mainly eat crustaceans, with great overlap in their diet spectra, but they differentiate in their spatial distribution. Southern hake and Patagonian toothfish mainly feed on fish, including the other 2 species, and exploit prey from a broad spatial area. These results suggest a spatial compartmentation of the food web at lower trophic levels, with demersal fish at the higher levels linking distant compartments. Therefore, results of this study show similarities and differences among these 4 demersal fish species, in the trophic and spatial dimensions of their niches, suggesting niche differentiation and probably different roles in the food web.Fil: Alvarez, C. D.. Instituto Nacional de Investigaciones y Desarrollo Pesquero; ArgentinaFil: Giussi, Analía Rosa. Instituto Nacional de Investigaciones y Desarrollo Pesquero; ArgentinaFil: Botto, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaInter-Research2024-07-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/261569Alvarez, C. D.; Giussi, Analía Rosa; Botto, Florencia; Niche partitioning among demersal marine fishes at the southern tip of South America; Inter-Research; Marine Ecology Progress Series; 739; 4-7-2024; 191-2050171-8630CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/meps/v739/p191-205/info:eu-repo/semantics/altIdentifier/doi/10.3354/meps14613info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:49:08Zoai:ri.conicet.gov.ar:11336/261569instacron: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 09:49:08.884CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Niche partitioning among demersal marine fishes at the southern tip of South America
title Niche partitioning among demersal marine fishes at the southern tip of South America
spellingShingle Niche partitioning among demersal marine fishes at the southern tip of South America
Alvarez, C. D.
Niche partitioning
Demersal fish
δ13C δ15N
Southwestern Atlantic Ocean
title_short Niche partitioning among demersal marine fishes at the southern tip of South America
title_full Niche partitioning among demersal marine fishes at the southern tip of South America
title_fullStr Niche partitioning among demersal marine fishes at the southern tip of South America
title_full_unstemmed Niche partitioning among demersal marine fishes at the southern tip of South America
title_sort Niche partitioning among demersal marine fishes at the southern tip of South America
dc.creator.none.fl_str_mv Alvarez, C. D.
Giussi, Analía Rosa
Botto, Florencia
author Alvarez, C. D.
author_facet Alvarez, C. D.
Giussi, Analía Rosa
Botto, Florencia
author_role author
author2 Giussi, Analía Rosa
Botto, Florencia
author2_role author
author
dc.subject.none.fl_str_mv Niche partitioning
Demersal fish
δ13C δ15N
Southwestern Atlantic Ocean
topic Niche partitioning
Demersal fish
δ13C δ15N
Southwestern Atlantic Ocean
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Niche differentiation is a means by which species can coexist and avoid competition. In marine food webs, large demersal fish often couple different trophic pathways and can be targets of valuable fisheries. This is the case for long tail hake Macruronus magellanicus, Patagonian toothfish Dissostichus eleginoides, southern blue whiting Micromesistius australis, and southern hake Merluccius australis, which coexist in the southernmost region of the southwestern Atlantic Ocean. In this study, C and N stable isotope and stomach content analyses were used to evaluate possible niche partitioning among these 4 species. Long tail hake and southern blue whiting mainly eat crustaceans, with great overlap in their diet spectra, but they differentiate in their spatial distribution. Southern hake and Patagonian toothfish mainly feed on fish, including the other 2 species, and exploit prey from a broad spatial area. These results suggest a spatial compartmentation of the food web at lower trophic levels, with demersal fish at the higher levels linking distant compartments. Therefore, results of this study show similarities and differences among these 4 demersal fish species, in the trophic and spatial dimensions of their niches, suggesting niche differentiation and probably different roles in the food web.
Fil: Alvarez, C. D.. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
Fil: Giussi, Analía Rosa. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
Fil: Botto, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
description Niche differentiation is a means by which species can coexist and avoid competition. In marine food webs, large demersal fish often couple different trophic pathways and can be targets of valuable fisheries. This is the case for long tail hake Macruronus magellanicus, Patagonian toothfish Dissostichus eleginoides, southern blue whiting Micromesistius australis, and southern hake Merluccius australis, which coexist in the southernmost region of the southwestern Atlantic Ocean. In this study, C and N stable isotope and stomach content analyses were used to evaluate possible niche partitioning among these 4 species. Long tail hake and southern blue whiting mainly eat crustaceans, with great overlap in their diet spectra, but they differentiate in their spatial distribution. Southern hake and Patagonian toothfish mainly feed on fish, including the other 2 species, and exploit prey from a broad spatial area. These results suggest a spatial compartmentation of the food web at lower trophic levels, with demersal fish at the higher levels linking distant compartments. Therefore, results of this study show similarities and differences among these 4 demersal fish species, in the trophic and spatial dimensions of their niches, suggesting niche differentiation and probably different roles in the food web.
publishDate 2024
dc.date.none.fl_str_mv 2024-07-04
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/11336/261569
Alvarez, C. D.; Giussi, Analía Rosa; Botto, Florencia; Niche partitioning among demersal marine fishes at the southern tip of South America; Inter-Research; Marine Ecology Progress Series; 739; 4-7-2024; 191-205
0171-8630
CONICET Digital
CONICET
url http://hdl.handle.net/11336/261569
identifier_str_mv Alvarez, C. D.; Giussi, Analía Rosa; Botto, Florencia; Niche partitioning among demersal marine fishes at the southern tip of South America; Inter-Research; Marine Ecology Progress Series; 739; 4-7-2024; 191-205
0171-8630
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://www.int-res.com/abstracts/meps/v739/p191-205/
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps14613
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 Inter-Research
publisher.none.fl_str_mv Inter-Research
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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