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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
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Trophic Niche
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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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