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dc.contributor.author
del Castillo, Daniela Laura
dc.contributor.author
Flores, David Alfredo
dc.contributor.author
Cappozzo, Humberto Luis
dc.date.available
2019-09-25T19:14:29Z
dc.date.issued
2014-12
dc.identifier.citation
del Castillo, Daniela Laura; Flores, David Alfredo; Cappozzo, Humberto Luis; Ontogenetic development and sexual dimorphism of franciscana dolphin skull: A 3D geometric morphometric approach; Wiley-liss, Div John Wiley & Sons Inc; Journal of Morphology; 275; 12; 12-2014; 1366-1375
dc.identifier.issn
0362-2525
dc.identifier.uri
http://hdl.handle.net/11336/84443
dc.description.abstract
The aim of this work was to study the postnatal ontogenetic development of Pontoporia blainvillei skull, identifying major changes on shape, and relating them to relevant factors in the life history of the species. We analyzed a complete ontogenetic series (73♂, 83♀) with three-dimensional geometric morphometric techniques. Immature dolphins showed a very well-developed braincase and a poorly developed rostrum, and the principal postnatal changes affected the rostrum and the temporal fossa, both structures implied functionally to the feeding apparatus, thus suggesting a specialized mode for catch fast prey in P. blainvillei. Osseous elements associated with sound production were already well developed on immature dolphins, suggesting the importance of this apparatus since the beginning of postnatal life. Sexual dimorphism was detected on both shape and size variables. Females were bigger than males, in accordance with previous studies. Shape differences between sexes were found on the posterior part of premaxillaries and external bony nares (P<0.01), suggesting that this sexual dimorphism is related to differences on vocalization capabilities.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley-liss, Div John Wiley & Sons Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GEOMETRIC MORPHOMETRICS
dc.subject
ONTOGENY
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PONTOPORIA BLAINVILLEI
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SEXUAL DIMORPHISM
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SKULL
dc.subject.classification
Zoología, Ornitología, Entomología, Etología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Ontogenetic development and sexual dimorphism of franciscana dolphin skull: A 3D geometric morphometric approach
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-09-24T12:51:40Z
dc.journal.volume
275
dc.journal.number
12
dc.journal.pagination
1366-1375
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: del Castillo, Daniela Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
dc.description.fil
Fil: Flores, David Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
dc.description.fil
Fil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
dc.journal.title
Journal of Morphology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/jmor.20309
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/jmor.20309
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