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dc.contributor.author
Darival Ferreira, José
dc.contributor.author
Rinderknecht, Andrés
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de Moura Bubadué, Jamile
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Flores Gasparetto, Luiza
dc.contributor.author
Dozo, Maria Teresa
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dc.contributor.author
Sánchez Villagra, Marcelo Ricardo
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Kerber, Leonardo
dc.date.available
2024-05-07T13:52:24Z
dc.date.issued
2024-03
dc.identifier.citation
Darival Ferreira, José; Rinderknecht, Andrés; de Moura Bubadué, Jamile; Flores Gasparetto, Luiza ; Dozo, Maria Teresa; et al.; Unveiling the neuroanatomy of Josephoartigasia monesi and the evolution of encephalization in caviomorph rodents; Springer; Brain Structure and Function; 229; 4; 3-2024; 971-985
dc.identifier.issn
1863-2661
dc.identifier.uri
http://hdl.handle.net/11336/234753
dc.description.abstract
Caviomorph rodents are an exceptional model for studying the effects of ecological factors and size relations on brain evolution.These mammals are not only speciose and ecologically diverse but also present wide body size disparity, especially when considering their fossil relatives. Here, we described the brain anatomy of the largest known rodent, Josephoartigasia monesi, uncovering distinctive features within this species regarding other taxa. Albeit resembling extant pacarana Dinomys branickii, J. monesi stands out due to its longer olfactory tract and well-developed sagittal sinus. Challenging the previous hypothesis that giant rodents possessed comparatively smaller brains, we found that J. monesi and another giant extinct rodent, Neoepiblema acreensis, are within the encephalization range of extant caviomorphs. This was unraveled while developing the a Phylogenetic Encephalization Quotient (PEQ) for Caviomorpha. With PEQ, we were able to trace brainsize predictions more accurately, accounting for species-shared ancestry while adding the extinct taxa phenotypic diversity into the prediction model. According to our results, caviomorphs encephalization patterns are not the product of ecological adaptations, and brain allometry is highly conservative within the clade. We challenge future studies to investigate caviomorphsencephalization within different taxonomic ranks while increasing the sampled taxa diversity, especially of extinct forms, in order to fully comprehend the magnitude of this evolutionary stasis.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ALLOMETRY
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LOCOMOTION
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BRAIN EVOLUTION
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SOUTH AMERICA
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Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Unveiling the neuroanatomy of Josephoartigasia monesi and the evolution of encephalization in caviomorph rodents
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-05-06T10:56:48Z
dc.journal.volume
229
dc.journal.number
4
dc.journal.pagination
971-985
dc.journal.pais
Alemania
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dc.description.fil
Fil: Darival Ferreira, José. Universidade Federal de Santa Maria; Brasil
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Fil: Rinderknecht, Andrés. Ministerio de Educación y Cultura. Museo Nacional de Historia Natural; Uruguay
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Fil: de Moura Bubadué, Jamile. Universidade Estadual Do Norte Fluminense Darcy Ribeiro; Brasil
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Fil: Flores Gasparetto, Luiza. Universidade Federal do Rio Grande do Sul; Brasil
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Fil: Dozo, Maria Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
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Fil: Sánchez Villagra, Marcelo Ricardo. Universitat Zurich. Instituto Palaontologisches Institut And Museum; Suiza
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Fil: Kerber, Leonardo. Universidade Federal de Santa Maria; Brasil
dc.journal.title
Brain Structure and Function
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00429-024-02762-y
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