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dc.contributor.author
Buono, Mónica Romina
dc.contributor.author
Fernandez, Marta Susana
dc.contributor.author
Fordyce, Ewan
dc.contributor.author
Reidenberg, Joy S.
dc.date.available
2017-03-08T19:56:29Z
dc.date.issued
2015-01
dc.identifier.citation
Buono, Mónica Romina; Fernandez, Marta Susana; Fordyce, Ewan; Reidenberg, Joy S.; Anatomy of nasal complex in the southern right whale, Eubalaena australis (Cetacea, Mysticeti); Wiley; Journal Of Anatomy; 226; 1; 1-2015; 81-92
dc.identifier.uri
http://hdl.handle.net/11336/13647
dc.description.abstract
The nasal region of the skull has undergone dramatic changes during the course of cetacean evolution. In particular, mysticetes (baleen whales) conserve the nasal mammalian pattern associated with the secondary function of olfaction, and lack the sound-producing specializations present in odontocetes (toothed whales, dolphins and porpoises). To improve our understanding of the morphology of the nasal region of mysticetes, we investigate the nasal anatomy, osteology and myology of the southern right whale, Eubalaena australis, and make comparisons with other mysticetes. In E. australis external deflection surfaces around the blowholes appear to divert water off the head, and differ in appearance from those observed in balaenopterids, eschrichtiids and cetotherids. In E. australis the blowholes are placed above hypertrophied nasal soft tissues formed by fat and nasal muscles, a pattern also observed in balaenopterids (rorqual mysticetes) and a cetotherid (pygmy right whale, Caperea marginata). Blowhole movements are due to the action of five nasofacial muscles: dilator naris superficialis, dilator naris profundus, depressor alae nasi, constrictor naris, and retractor alae nasi. The dilator naris profundus found in E. australis has not been previously reported in balaenopterids. The other nasofacial muscles have a similar arrangement in balaenopterids, with minor differences. A novel structure, not reported previously in any mysticete, is the presence of a vascular tissue (rete mirabile) covering the lower nasal passage. This vascular tissue could play a role in warming inspired air, or may engorge to accommodate loss of respiratory space volume due to gas compression from increased pressure during diving.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Anatomy
dc.subject
Blowhole
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Eubalaena Australis
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Mysticete
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Nasal Muscle
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Nasal Plug
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Right Whale
dc.subject.classification
Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Anatomy of nasal complex in the southern right whale, Eubalaena australis (Cetacea, Mysticeti)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-03-08T15:40:05Z
dc.identifier.eissn
1469-7580
dc.journal.volume
226
dc.journal.number
1
dc.journal.pagination
81-92
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Hoboken
dc.description.fil
Fil: Buono, Mónica Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Fernandez, Marta Susana. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Fordyce, Ewan. University Of Otago; Nueva Zelanda
dc.description.fil
Fil: Reidenberg, Joy S.. Icahn School of Medicine at Mount Sinai; Estados Unidos
dc.journal.title
Journal Of Anatomy
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/joa.12250
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/joa.12250/abstract
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