Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis

Autores
Valenzuela, Luciano Oscar; Rowntree, Victoria; Sironi, Mariano; Seger, Jon
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Skin samples collected from living Southern right whales (SRWs) off Península Valdés, Argentina, show a wide range of stable isotope values (δ15N, δ13C, δ34S). These were compared to the isotopic signatures of euphausiids and copepods from different areas across the Southwestern South Atlantic and the Atlantic sector of the Southern Ocean. Our results suggest that that this population of SRWs uses at least 3 distinct food sources. Each food source May represent a single feeding ground or a combination of feeding grounds with different prey species distributions. Individual whales pursue foraging strategies that vary substantially in the amounts of time they spend in different feeding grounds along their migratory paths. The 3 grounds that appear to contribute most to the diets of Península Valdés SRWs correspond to areas previously documented in the log books of whaling ships: the Patagonian Shelf, South Georgia and the waters of the Polar Front. It is possible that additional feeding areas are also currently being used in the South Atlantic. Age and sex classes differ isotopically, but these differences could be caused by biomechanical or physiological characteristics rather than by age- and sex-specific specialization in different feeding areas.
Fil: Valenzuela, Luciano Oscar. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Sociales. Departamento de Arqueología. Laboratorio de Ecología Evolutiva Humana (Sede Quequén); Argentina
Fil: Rowntree, Victoria. University Of Utah. Department Of Biology; Estados Unidos
Fil: Sironi, Mariano. Instituto de Conservación de Ballenas; Argentina
Fil: Seger, Jon. University Of Utah. Department Of Biology; Estados Unidos
Materia
BALEEN WHALES
DISTRIBUTION
FEEDING GROUNDS
MIGRATION
PATAGONIA
POPULATION
SOUTHERN OCEAN
Nivel de accesibilidad
acceso embargado
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:11336/96805
Acceder
id CONICETDig_12ebedf07ca12ee7e0d5abaace162c7f
oai_identifier_str oai:ri.conicet.gov.ar:11336/96805
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australisValenzuela, Luciano OscarRowntree, VictoriaSironi, MarianoSeger, JonBALEEN WHALESDISTRIBUTIONFEEDING GROUNDSMIGRATIONPATAGONIAPOPULATIONSOUTHERN OCEANhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Skin samples collected from living Southern right whales (SRWs) off Península Valdés, Argentina, show a wide range of stable isotope values (δ15N, δ13C, δ34S). These were compared to the isotopic signatures of euphausiids and copepods from different areas across the Southwestern South Atlantic and the Atlantic sector of the Southern Ocean. Our results suggest that that this population of SRWs uses at least 3 distinct food sources. Each food source May represent a single feeding ground or a combination of feeding grounds with different prey species distributions. Individual whales pursue foraging strategies that vary substantially in the amounts of time they spend in different feeding grounds along their migratory paths. The 3 grounds that appear to contribute most to the diets of Península Valdés SRWs correspond to areas previously documented in the log books of whaling ships: the Patagonian Shelf, South Georgia and the waters of the Polar Front. It is possible that additional feeding areas are also currently being used in the South Atlantic. Age and sex classes differ isotopically, but these differences could be caused by biomechanical or physiological characteristics rather than by age- and sex-specific specialization in different feeding areas.Fil: Valenzuela, Luciano Oscar. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Sociales. Departamento de Arqueología. Laboratorio de Ecología Evolutiva Humana (Sede Quequén); ArgentinaFil: Rowntree, Victoria. University Of Utah. Department Of Biology; Estados UnidosFil: Sironi, Mariano. Instituto de Conservación de Ballenas; ArgentinaFil: Seger, Jon. University Of Utah. Department Of Biology; Estados UnidosInter-Research2018-09info:eu-repo/date/embargoEnd/2023-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/96805Valenzuela, Luciano Oscar; Rowntree, Victoria; Sironi, Mariano; Seger, Jon; Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis; Inter-Research; Marine Ecology Progress Series; 603; 9-2018; 243-2550171-8630CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/journals/meps/meps-home/info:eu-repo/semantics/altIdentifier/doi/10.3354/meps12722info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:49Zoai:ri.conicet.gov.ar:11336/96805instacron: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:34982025-09-03 09:58:49.374CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis
title Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis
spellingShingle Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis
Valenzuela, Luciano Oscar
BALEEN WHALES
DISTRIBUTION
FEEDING GROUNDS
MIGRATION
PATAGONIA
POPULATION
SOUTHERN OCEAN
title_short Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis
title_full Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis
title_fullStr Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis
title_full_unstemmed Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis
title_sort Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis
dc.creator.none.fl_str_mv Valenzuela, Luciano Oscar
Rowntree, Victoria
Sironi, Mariano
Seger, Jon
author Valenzuela, Luciano Oscar
author_facet Valenzuela, Luciano Oscar
Rowntree, Victoria
Sironi, Mariano
Seger, Jon
author_role author
author2 Rowntree, Victoria
Sironi, Mariano
Seger, Jon
author2_role author
author
author
dc.subject.none.fl_str_mv BALEEN WHALES
DISTRIBUTION
FEEDING GROUNDS
MIGRATION
PATAGONIA
POPULATION
SOUTHERN OCEAN
topic BALEEN WHALES
DISTRIBUTION
FEEDING GROUNDS
MIGRATION
PATAGONIA
POPULATION
SOUTHERN 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 Skin samples collected from living Southern right whales (SRWs) off Península Valdés, Argentina, show a wide range of stable isotope values (δ15N, δ13C, δ34S). These were compared to the isotopic signatures of euphausiids and copepods from different areas across the Southwestern South Atlantic and the Atlantic sector of the Southern Ocean. Our results suggest that that this population of SRWs uses at least 3 distinct food sources. Each food source May represent a single feeding ground or a combination of feeding grounds with different prey species distributions. Individual whales pursue foraging strategies that vary substantially in the amounts of time they spend in different feeding grounds along their migratory paths. The 3 grounds that appear to contribute most to the diets of Península Valdés SRWs correspond to areas previously documented in the log books of whaling ships: the Patagonian Shelf, South Georgia and the waters of the Polar Front. It is possible that additional feeding areas are also currently being used in the South Atlantic. Age and sex classes differ isotopically, but these differences could be caused by biomechanical or physiological characteristics rather than by age- and sex-specific specialization in different feeding areas.
Fil: Valenzuela, Luciano Oscar. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Sociales. Departamento de Arqueología. Laboratorio de Ecología Evolutiva Humana (Sede Quequén); Argentina
Fil: Rowntree, Victoria. University Of Utah. Department Of Biology; Estados Unidos
Fil: Sironi, Mariano. Instituto de Conservación de Ballenas; Argentina
Fil: Seger, Jon. University Of Utah. Department Of Biology; Estados Unidos
description Skin samples collected from living Southern right whales (SRWs) off Península Valdés, Argentina, show a wide range of stable isotope values (δ15N, δ13C, δ34S). These were compared to the isotopic signatures of euphausiids and copepods from different areas across the Southwestern South Atlantic and the Atlantic sector of the Southern Ocean. Our results suggest that that this population of SRWs uses at least 3 distinct food sources. Each food source May represent a single feeding ground or a combination of feeding grounds with different prey species distributions. Individual whales pursue foraging strategies that vary substantially in the amounts of time they spend in different feeding grounds along their migratory paths. The 3 grounds that appear to contribute most to the diets of Península Valdés SRWs correspond to areas previously documented in the log books of whaling ships: the Patagonian Shelf, South Georgia and the waters of the Polar Front. It is possible that additional feeding areas are also currently being used in the South Atlantic. Age and sex classes differ isotopically, but these differences could be caused by biomechanical or physiological characteristics rather than by age- and sex-specific specialization in different feeding areas.
publishDate 2018
dc.date.none.fl_str_mv 2018-09
info:eu-repo/date/embargoEnd/2023-10-01
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/11336/96805
Valenzuela, Luciano Oscar; Rowntree, Victoria; Sironi, Mariano; Seger, Jon; Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis; Inter-Research; Marine Ecology Progress Series; 603; 9-2018; 243-255
0171-8630
CONICET Digital
CONICET
url http://hdl.handle.net/11336/96805
identifier_str_mv Valenzuela, Luciano Oscar; Rowntree, Victoria; Sironi, Mariano; Seger, Jon; Stable isotopes (δ15N, δ13C, δ34S) in skin reveal diverse food sources used by Southern right whales Eubalaena australis; Inter-Research; Marine Ecology Progress Series; 603; 9-2018; 243-255
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/journals/meps/meps-home/
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps12722
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv embargoedAccess
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
_version_ 1842269543723958272
score 13.13397

Publicaciones similares