Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia

Autores
Travaini, Alejandro; Santillán, Miguel Ángel; Zapata, Sonia Cristina
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We studied the Red-backed Hawk (Buteo polyosoma) diet by pellet analysis in two areas, the Monumento Natural Bosques Petrificados (MNBP) and Junín de los Andes, located in southern and northwestern Argentinean Patagonia respectively. These areas have different values of primary production mainly due to the differences in mean annual precipitation, being higher in Junín de los Andes. Diets were dominated by mammals in both areas (68.3% and 61% of occurrences). Rodents represented the greatest proportion (66.5%) of prey numbers in MNBP. They represented 92.6% of the biomass. Arthropods were also consumed with a relatively high occurrence (21.4%). In Junín de los Andes, rodents were an important prey (57.1%) but represented only 29.6% of the consumed biomass. In contrast, the introduced European hare (Lepus europaeus) was not frequently consumed (13.5%) but comprised 59.3% of prey biomass. Reptiles were a frequent item, consumed at 25.2% of total prey. The diet of the Red-backed Hawk was significantly different between MNBP and Junín de los Andes. The wider food niche breadth of the Red-backed Hawk in Junín de los Andes was likely attributable to the more even distribution of prey categories. Additionally, a functional response toward European hare consumption was observed, with a higher consumption of this prey at Junín de los Andes.
Fil: Travaini, Alejandro. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Santillán, Miguel Ángel. Universidad Nacional de la Patagonia Austral; Argentina
Fil: Zapata, Sonia Cristina. Universidad Nacional de la Patagonia Austral; Argentina
Materia
ARGENTINEAN PATAGONIA
BUTEO POLYOSOMA
DIET
EUROPEAN HARE
FUNCTIONAL RESPONSE
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:11336/194840
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/194840
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of PatagoniaTravaini, AlejandroSantillán, Miguel ÁngelZapata, Sonia CristinaARGENTINEAN PATAGONIABUTEO POLYOSOMADIETEUROPEAN HAREFUNCTIONAL RESPONSEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We studied the Red-backed Hawk (Buteo polyosoma) diet by pellet analysis in two areas, the Monumento Natural Bosques Petrificados (MNBP) and Junín de los Andes, located in southern and northwestern Argentinean Patagonia respectively. These areas have different values of primary production mainly due to the differences in mean annual precipitation, being higher in Junín de los Andes. Diets were dominated by mammals in both areas (68.3% and 61% of occurrences). Rodents represented the greatest proportion (66.5%) of prey numbers in MNBP. They represented 92.6% of the biomass. Arthropods were also consumed with a relatively high occurrence (21.4%). In Junín de los Andes, rodents were an important prey (57.1%) but represented only 29.6% of the consumed biomass. In contrast, the introduced European hare (Lepus europaeus) was not frequently consumed (13.5%) but comprised 59.3% of prey biomass. Reptiles were a frequent item, consumed at 25.2% of total prey. The diet of the Red-backed Hawk was significantly different between MNBP and Junín de los Andes. The wider food niche breadth of the Red-backed Hawk in Junín de los Andes was likely attributable to the more even distribution of prey categories. Additionally, a functional response toward European hare consumption was observed, with a higher consumption of this prey at Junín de los Andes.Fil: Travaini, Alejandro. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Santillán, Miguel Ángel. Universidad Nacional de la Patagonia Austral; ArgentinaFil: Zapata, Sonia Cristina. Universidad Nacional de la Patagonia Austral; ArgentinaTaylor & Francis Ltd2012-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/194840Travaini, Alejandro; Santillán, Miguel Ángel; Zapata, Sonia Cristina; Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia; Taylor & Francis Ltd; Studies on Neotropical Fauna and Environment; 47; 1; 2-2012; 25-320165-0521CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/01650521.2011.649948info:eu-repo/semantics/altIdentifier/doi/10.1080/01650521.2011.649948info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:04Zoai:ri.conicet.gov.ar:11336/194840instacron: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 09:34:04.764CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia
title Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia
spellingShingle Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia
Travaini, Alejandro
ARGENTINEAN PATAGONIA
BUTEO POLYOSOMA
DIET
EUROPEAN HARE
FUNCTIONAL RESPONSE
title_short Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia
title_full Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia
title_fullStr Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia
title_full_unstemmed Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia
title_sort Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia
dc.creator.none.fl_str_mv Travaini, Alejandro
Santillán, Miguel Ángel
Zapata, Sonia Cristina
author Travaini, Alejandro
author_facet Travaini, Alejandro
Santillán, Miguel Ángel
Zapata, Sonia Cristina
author_role author
author2 Santillán, Miguel Ángel
Zapata, Sonia Cristina
author2_role author
author
dc.subject.none.fl_str_mv ARGENTINEAN PATAGONIA
BUTEO POLYOSOMA
DIET
EUROPEAN HARE
FUNCTIONAL RESPONSE
topic ARGENTINEAN PATAGONIA
BUTEO POLYOSOMA
DIET
EUROPEAN HARE
FUNCTIONAL RESPONSE
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 studied the Red-backed Hawk (Buteo polyosoma) diet by pellet analysis in two areas, the Monumento Natural Bosques Petrificados (MNBP) and Junín de los Andes, located in southern and northwestern Argentinean Patagonia respectively. These areas have different values of primary production mainly due to the differences in mean annual precipitation, being higher in Junín de los Andes. Diets were dominated by mammals in both areas (68.3% and 61% of occurrences). Rodents represented the greatest proportion (66.5%) of prey numbers in MNBP. They represented 92.6% of the biomass. Arthropods were also consumed with a relatively high occurrence (21.4%). In Junín de los Andes, rodents were an important prey (57.1%) but represented only 29.6% of the consumed biomass. In contrast, the introduced European hare (Lepus europaeus) was not frequently consumed (13.5%) but comprised 59.3% of prey biomass. Reptiles were a frequent item, consumed at 25.2% of total prey. The diet of the Red-backed Hawk was significantly different between MNBP and Junín de los Andes. The wider food niche breadth of the Red-backed Hawk in Junín de los Andes was likely attributable to the more even distribution of prey categories. Additionally, a functional response toward European hare consumption was observed, with a higher consumption of this prey at Junín de los Andes.
Fil: Travaini, Alejandro. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Santillán, Miguel Ángel. Universidad Nacional de la Patagonia Austral; Argentina
Fil: Zapata, Sonia Cristina. Universidad Nacional de la Patagonia Austral; Argentina
description We studied the Red-backed Hawk (Buteo polyosoma) diet by pellet analysis in two areas, the Monumento Natural Bosques Petrificados (MNBP) and Junín de los Andes, located in southern and northwestern Argentinean Patagonia respectively. These areas have different values of primary production mainly due to the differences in mean annual precipitation, being higher in Junín de los Andes. Diets were dominated by mammals in both areas (68.3% and 61% of occurrences). Rodents represented the greatest proportion (66.5%) of prey numbers in MNBP. They represented 92.6% of the biomass. Arthropods were also consumed with a relatively high occurrence (21.4%). In Junín de los Andes, rodents were an important prey (57.1%) but represented only 29.6% of the consumed biomass. In contrast, the introduced European hare (Lepus europaeus) was not frequently consumed (13.5%) but comprised 59.3% of prey biomass. Reptiles were a frequent item, consumed at 25.2% of total prey. The diet of the Red-backed Hawk was significantly different between MNBP and Junín de los Andes. The wider food niche breadth of the Red-backed Hawk in Junín de los Andes was likely attributable to the more even distribution of prey categories. Additionally, a functional response toward European hare consumption was observed, with a higher consumption of this prey at Junín de los Andes.
publishDate 2012
dc.date.none.fl_str_mv 2012-02
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/11336/194840
Travaini, Alejandro; Santillán, Miguel Ángel; Zapata, Sonia Cristina; Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia; Taylor & Francis Ltd; Studies on Neotropical Fauna and Environment; 47; 1; 2-2012; 25-32
0165-0521
CONICET Digital
CONICET
url http://hdl.handle.net/11336/194840
identifier_str_mv Travaini, Alejandro; Santillán, Miguel Ángel; Zapata, Sonia Cristina; Diet of the Red-backed Hawk (Buteo polyosoma) in two environmentally contrasting areas of Patagonia; Taylor & Francis Ltd; Studies on Neotropical Fauna and Environment; 47; 1; 2-2012; 25-32
0165-0521
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.tandfonline.com/doi/abs/10.1080/01650521.2011.649948
info:eu-repo/semantics/altIdentifier/doi/10.1080/01650521.2011.649948
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 Taylor & Francis Ltd
publisher.none.fl_str_mv Taylor & Francis Ltd
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
_version_ 1844613053080928256
score 13.070432

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