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dc.contributor.author
Gurovich, Yamila
dc.contributor.author
Bongers, Andre
dc.contributor.author
Ashwell, Ken W. S.
dc.date.available
2019-08-12T14:36:32Z
dc.date.issued
2019-09-28
dc.identifier.citation
Gurovich, Yamila; Bongers, Andre; Ashwell, Ken W. S.; Magnetic Resonance Imaging of the Brains of Three Peramelemorphian Marsupials; Springer; Journal of Mammalian Evolution; 26; 3; 28-9-2019; 295-316
dc.identifier.issn
1064-7554
dc.identifier.uri
http://hdl.handle.net/11336/81409
dc.description.abstract
Peramelemorphians (bandicoots and bilbies) are a unique and diverse group of digging Australasian marsupials, but their behavioral neurology and neuroanatomy is poorly known. Here, we have used Magnetic Resonance Imaging (MRI) to study the brains of three peramelemorphians: two bandicoots (Perameles nasuta and Isoodon obesulus) and the bilby (Macrotis lagotis), which is endangered. These brains had been stored in formaldehyde solution for more than 80 years and one of our goals was to demonstrate the feasibilty of extracting detailed comparative neuroanatomical information from the long-term preserved brains of rare, endangered, and extinct animals. High resolution anatomical and Diffusion Tensor Imaging was performed using a 9.4-T Bruker BioSpec 94/20 Avance III MRI system (Bruker, Ettlingen, Germany) located at the UNSW in Sydney. We were able to differentiate areal and laminar topography within isocortical areas (primary somatosensory – S1; and visual - V1, V2), as well as subdivisions within olfactory and limbic allocortical regions (cingulate, hippocampal). Resolution of subcortical structures was sufficient to differentiate α and β segments within the visual nucleus of the thalamus. We identified several previously unrecognized longitudinal association fiber systems as well as a rich array of sensory thalamocortical connections. Dense fiber pathways were observed to S1 and in the midbrain auditory pathways (mainly the lateral lemniscus, but also the brachium of the inferior colliculus). Our findings demonstrate the feasibility of using this sort of imaging of archived brains to analyze the neuroanatomy of rare and evolutionarily significant species and to relate these findings to the behavioral neurology of those species.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Bandicoot
dc.subject
Bilby
dc.subject
Brain
dc.subject
Mri
dc.subject
Neuroanatomy
dc.subject
Peramelemorphia
dc.subject.classification
Zoología, Ornitología, Entomología, Etología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Magnetic Resonance Imaging of the Brains of Three Peramelemorphian Marsupials
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-07-24T18:34:32Z
dc.journal.volume
26
dc.journal.number
3
dc.journal.pagination
295-316
dc.journal.pais
Alemania
dc.journal.ciudad
Berlín
dc.description.fil
Fil: Gurovich, Yamila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagóica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina. University of New South Wales; Australia
dc.description.fil
Fil: Bongers, Andre. University of New South Wales; Australia
dc.description.fil
Fil: Ashwell, Ken W. S.. University of New South Wales; Australia
dc.journal.title
Journal of Mammalian Evolution
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10914-018-9429-x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10914-018-9429-x
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