Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans

Autores
Riccialdelli, Luciana; Paso Viola, María Natalia; Panarello, Hector Osvaldo; Prosser Goodall, Rae Natalie
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The study of species’ niches is becoming increasingly important in ecological research with the growing need to understand how species and their habitat respond to rapid environmental changes. This kind of study is especially challenging in the case of oceanic and cryptic species such as beaked whales. We analyzed δ13C and δ15N values in bone collagen to study interspecific variation in the isotopic niche of 8 species of beaked whales (Berardius arnuxii, Hyperoodon planifrons, Mesoplodon bowdoini, M. grayi, M. hectori, M. layardii, Tasmacetus shepherdi and Ziphius cavirostris) that stranded along the coast of Tierra del Fuego, Argentina, between 1967 and 2009. We found a spatial (e.g. feeding areas) and trophic (e.g. diet) isotopic segregation among these species, which are known to inhabit subantarctic to Antarctic waters. Isotopic analysis showed that, while spatial segregation seems to operate to a higher degree in species of the same genus (e.g. Mesoplodon), trophic differentiation allowed the co-existence of sympatric species from different genera (e.g. Ziphius, Hyperodoon and Mesoplodon). Our results agree with previous studies based on stomach content analyses. In addition to different trophic strategies, variation in habitat preferences were also revealed by stable isotope analysis. An isotopic trend in both δ13C and δ15N values was found among beaked whales and possible prey species in accordance with previous information on other cetacean species known to have feeding areas in different ocean regions. The present study provides valuable ecological information about elusive and littlestudied beaked whale species inhabiting the world’s southernmost oceans.
Fil: Riccialdelli, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; Argentina
Fil: Paso Viola, María Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; Argentina
Fil: Panarello, Hector Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
Fil: Prosser Goodall, Rae Natalie. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Materia
ZIPHIIDAE
δ13C
δ15N
TROPHIC NICHE
SUBANTARCTIC WATERS
POLAR WATERS
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:11336/43693

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network_name_str CONICET Digital (CONICET)
spelling Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern OceansRiccialdelli, LucianaPaso Viola, María NataliaPanarello, Hector OsvaldoProsser Goodall, Rae NatalieZIPHIIDAEδ13Cδ15NTROPHIC NICHESUBANTARCTIC WATERSPOLAR WATERShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The study of species’ niches is becoming increasingly important in ecological research with the growing need to understand how species and their habitat respond to rapid environmental changes. This kind of study is especially challenging in the case of oceanic and cryptic species such as beaked whales. We analyzed δ13C and δ15N values in bone collagen to study interspecific variation in the isotopic niche of 8 species of beaked whales (Berardius arnuxii, Hyperoodon planifrons, Mesoplodon bowdoini, M. grayi, M. hectori, M. layardii, Tasmacetus shepherdi and Ziphius cavirostris) that stranded along the coast of Tierra del Fuego, Argentina, between 1967 and 2009. We found a spatial (e.g. feeding areas) and trophic (e.g. diet) isotopic segregation among these species, which are known to inhabit subantarctic to Antarctic waters. Isotopic analysis showed that, while spatial segregation seems to operate to a higher degree in species of the same genus (e.g. Mesoplodon), trophic differentiation allowed the co-existence of sympatric species from different genera (e.g. Ziphius, Hyperodoon and Mesoplodon). Our results agree with previous studies based on stomach content analyses. In addition to different trophic strategies, variation in habitat preferences were also revealed by stable isotope analysis. An isotopic trend in both δ13C and δ15N values was found among beaked whales and possible prey species in accordance with previous information on other cetacean species known to have feeding areas in different ocean regions. The present study provides valuable ecological information about elusive and littlestudied beaked whale species inhabiting the world’s southernmost oceans.Fil: Riccialdelli, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; ArgentinaFil: Paso Viola, María Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; ArgentinaFil: Panarello, Hector Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; ArgentinaFil: Prosser Goodall, Rae Natalie. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaInter-Research2017-10-13info:eu-repo/date/embargoEnd/2022-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/43693Riccialdelli, Luciana; Paso Viola, María Natalia; Panarello, Hector Osvaldo; Prosser Goodall, Rae Natalie; Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans; Inter-Research; Marine Ecology Progress Series; 581; 13-10-2017; 183-1980171-8630CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.int-res.com/prepress/m12296.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.3354/meps12296info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:50Zoai:ri.conicet.gov.ar:11336/43693instacron: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 09:43:50.419CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
title Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
spellingShingle Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
Riccialdelli, Luciana
ZIPHIIDAE
δ13C
δ15N
TROPHIC NICHE
SUBANTARCTIC WATERS
POLAR WATERS
title_short Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
title_full Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
title_fullStr Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
title_full_unstemmed Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
title_sort Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
dc.creator.none.fl_str_mv Riccialdelli, Luciana
Paso Viola, María Natalia
Panarello, Hector Osvaldo
Prosser Goodall, Rae Natalie
author Riccialdelli, Luciana
author_facet Riccialdelli, Luciana
Paso Viola, María Natalia
Panarello, Hector Osvaldo
Prosser Goodall, Rae Natalie
author_role author
author2 Paso Viola, María Natalia
Panarello, Hector Osvaldo
Prosser Goodall, Rae Natalie
author2_role author
author
author
dc.subject.none.fl_str_mv ZIPHIIDAE
δ13C
δ15N
TROPHIC NICHE
SUBANTARCTIC WATERS
POLAR WATERS
topic ZIPHIIDAE
δ13C
δ15N
TROPHIC NICHE
SUBANTARCTIC WATERS
POLAR WATERS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The study of species’ niches is becoming increasingly important in ecological research with the growing need to understand how species and their habitat respond to rapid environmental changes. This kind of study is especially challenging in the case of oceanic and cryptic species such as beaked whales. We analyzed δ13C and δ15N values in bone collagen to study interspecific variation in the isotopic niche of 8 species of beaked whales (Berardius arnuxii, Hyperoodon planifrons, Mesoplodon bowdoini, M. grayi, M. hectori, M. layardii, Tasmacetus shepherdi and Ziphius cavirostris) that stranded along the coast of Tierra del Fuego, Argentina, between 1967 and 2009. We found a spatial (e.g. feeding areas) and trophic (e.g. diet) isotopic segregation among these species, which are known to inhabit subantarctic to Antarctic waters. Isotopic analysis showed that, while spatial segregation seems to operate to a higher degree in species of the same genus (e.g. Mesoplodon), trophic differentiation allowed the co-existence of sympatric species from different genera (e.g. Ziphius, Hyperodoon and Mesoplodon). Our results agree with previous studies based on stomach content analyses. In addition to different trophic strategies, variation in habitat preferences were also revealed by stable isotope analysis. An isotopic trend in both δ13C and δ15N values was found among beaked whales and possible prey species in accordance with previous information on other cetacean species known to have feeding areas in different ocean regions. The present study provides valuable ecological information about elusive and littlestudied beaked whale species inhabiting the world’s southernmost oceans.
Fil: Riccialdelli, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; Argentina
Fil: Paso Viola, María Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; Argentina
Fil: Panarello, Hector Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
Fil: Prosser Goodall, Rae Natalie. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
description The study of species’ niches is becoming increasingly important in ecological research with the growing need to understand how species and their habitat respond to rapid environmental changes. This kind of study is especially challenging in the case of oceanic and cryptic species such as beaked whales. We analyzed δ13C and δ15N values in bone collagen to study interspecific variation in the isotopic niche of 8 species of beaked whales (Berardius arnuxii, Hyperoodon planifrons, Mesoplodon bowdoini, M. grayi, M. hectori, M. layardii, Tasmacetus shepherdi and Ziphius cavirostris) that stranded along the coast of Tierra del Fuego, Argentina, between 1967 and 2009. We found a spatial (e.g. feeding areas) and trophic (e.g. diet) isotopic segregation among these species, which are known to inhabit subantarctic to Antarctic waters. Isotopic analysis showed that, while spatial segregation seems to operate to a higher degree in species of the same genus (e.g. Mesoplodon), trophic differentiation allowed the co-existence of sympatric species from different genera (e.g. Ziphius, Hyperodoon and Mesoplodon). Our results agree with previous studies based on stomach content analyses. In addition to different trophic strategies, variation in habitat preferences were also revealed by stable isotope analysis. An isotopic trend in both δ13C and δ15N values was found among beaked whales and possible prey species in accordance with previous information on other cetacean species known to have feeding areas in different ocean regions. The present study provides valuable ecological information about elusive and littlestudied beaked whale species inhabiting the world’s southernmost oceans.
publishDate 2017
dc.date.none.fl_str_mv 2017-10-13
info:eu-repo/date/embargoEnd/2022-11-01
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/11336/43693
Riccialdelli, Luciana; Paso Viola, María Natalia; Panarello, Hector Osvaldo; Prosser Goodall, Rae Natalie; Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans; Inter-Research; Marine Ecology Progress Series; 581; 13-10-2017; 183-198
0171-8630
CONICET Digital
CONICET
url http://hdl.handle.net/11336/43693
identifier_str_mv Riccialdelli, Luciana; Paso Viola, María Natalia; Panarello, Hector Osvaldo; Prosser Goodall, Rae Natalie; Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans; Inter-Research; Marine Ecology Progress Series; 581; 13-10-2017; 183-198
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/http://www.int-res.com/prepress/m12296.html
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps12296
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
application/pdf
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dc.publisher.none.fl_str_mv Inter-Research
publisher.none.fl_str_mv Inter-Research
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