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dc.contributor.author Riccialdelli, Luciana
dc.contributor.author Paso Viola, María Natalia
dc.contributor.author Panarello, Hector Osvaldo
dc.contributor.author Prosser Goodall, Rae Natalie
dc.date.available 2018-04-27T19:07:23Z
dc.date.issued 2017-10-13
dc.identifier.citation 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
dc.identifier.issn 0171-8630
dc.identifier.uri http://hdl.handle.net/11336/43693
dc.description.abstract 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.
dc.format application/pdf
dc.language.iso eng
dc.publisher Inter-Research
dc.rights info:eu-repo/semantics/embargoedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject ZIPHIIDAE
dc.subject δ13C
dc.subject δ15N
dc.subject TROPHIC NICHE
dc.subject SUBANTARCTIC WATERS
dc.subject POLAR WATERS
dc.subject.classification Otras Ciencias Biológicas
dc.subject.classification Ciencias Biológicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Evaluating the isotopic niche of beaked whales from the southwestern South Atlantic and Southern Oceans
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-04-13T20:01:58Z
dc.journal.volume 581
dc.journal.pagination 183-198
dc.journal.pais Alemania
dc.journal.ciudad Lüneburg
dc.description.fil Fil: Riccialdelli, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; Argentina
dc.description.fil 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
dc.description.fil 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
dc.description.fil Fil: Prosser Goodall, Rae Natalie. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.journal.title Marine Ecology Progress Series
dc.rights.embargoDate 2022-11-01
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.int-res.com/prepress/m12296.html
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.3354/meps12296
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Blocked Fin del embargo:
01-11-2022

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  • Articulos(CADIC) [487]
    Articulos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
  • Articulos(INGEIS) [112]
    Articulos de INST.DE GEOCRONOLOGIA Y GEOLOGIA ISOTOPICA (I)

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info:eu-repo/semantics/embargoedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)