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Abstract:

Psittaciformes are a very diverse group of non-passerine birds, with advanced cognitive abilities and highly developed locomotor and feeding behaviours. Using computed tomography and three-dimensional (3D) visualization software, the endocasts of 14 extant Neotropical parrots were reconstructed, with the aim of analysing, comparing and exploring the morphology of the brain within the clade. A 3D geomorphometric analysis was performed, and the encephalization quotient (EQ) was calculated. Brain morphology character states were traced onto a Psittaciformes tree in order to facilitate interpretation of morphological traits in a phylogenetic context. Our results indicate that: (i) there are two conspicuously distinct brain morphologies, one considered walnut type (quadrangular and wider than long) and the other rounded (narrower and rostrally tapered); (ii) Psittaciformes possess a noticeable notch between hemisphaeria that divides the bulbus olfactorius; (iii) the plesiomorphic and most frequently observed characteristics of Neotropical parrots are a rostrally tapered telencephalon in dorsal view, distinctly enlarged dorsal expansion of the eminentia sagittalis and conspicuous fissura mediana; (iv) there is a positive correlation between body mass and brain volume; (v) psittacids are characterized by high EQ values that suggest high brain volumes in relation to their body masses; and (vi) the endocranial morphology of the Psittaciformes as a whole is distinctive relative to other birds. This new knowledge of brain morphology offers much potential for further insight in paleoneurological, phylogenetic and evolutionary studies. © 2015 Anatomical Society

Registro:

Documento: Artículo
Título:Comparative brain morphology of Neotropical parrots (Aves, Psittaciformes) inferred from virtual 3D endocasts
Autor:Carril, J.; Tambussi, C.P.; Degrange, F.J.; Benitez Saldivar, M.J.; Picasso, M.B.J.
Filiación:Cátedra de Histología y Embriología Animal, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
Centro de Investigaciones en Ciencias de la Tierra (CICTERRA), CONICET-UNC, Córdoba, Argentina
Centro de Investigaciones Paleobiológicas (CIPAL), Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
División Paleontología Vertebrados, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Buenos Aires, Argentina
Palabras clave:3D brain reconstructions; Aves; character mapping; endocranial morphology; geometric morphometrics; adult; animal tissue; Article; body mass; brain region; brain size; character state; comparative anatomy; computer assisted tomography; diencephalon; imaging software; mesencephalon; metencephalon; morphological trait; morphology; myelencephalon; Neotropics; neuroanatomy; nonhuman; parrot; phylogeny; priority journal; psittacine; telencephalon; three dimensional imaging; virtual reality
Año:2016
Volumen:229
Número:2
Página de inicio:239
Página de fin:251
DOI: http://dx.doi.org/10.1111/joa.12325
Título revista:Journal of Anatomy
Título revista abreviado:J. Anat.
ISSN:00218782
CODEN:JOANA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00218782_v229_n2_p239_Carril

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Citas:

---------- APA ----------
Carril, J., Tambussi, C.P., Degrange, F.J., Benitez Saldivar, M.J. & Picasso, M.B.J. (2016) . Comparative brain morphology of Neotropical parrots (Aves, Psittaciformes) inferred from virtual 3D endocasts. Journal of Anatomy, 229(2), 239-251.
http://dx.doi.org/10.1111/joa.12325
---------- CHICAGO ----------
Carril, J., Tambussi, C.P., Degrange, F.J., Benitez Saldivar, M.J., Picasso, M.B.J. "Comparative brain morphology of Neotropical parrots (Aves, Psittaciformes) inferred from virtual 3D endocasts" . Journal of Anatomy 229, no. 2 (2016) : 239-251.
http://dx.doi.org/10.1111/joa.12325
---------- MLA ----------
Carril, J., Tambussi, C.P., Degrange, F.J., Benitez Saldivar, M.J., Picasso, M.B.J. "Comparative brain morphology of Neotropical parrots (Aves, Psittaciformes) inferred from virtual 3D endocasts" . Journal of Anatomy, vol. 229, no. 2, 2016, pp. 239-251.
http://dx.doi.org/10.1111/joa.12325
---------- VANCOUVER ----------
Carril, J., Tambussi, C.P., Degrange, F.J., Benitez Saldivar, M.J., Picasso, M.B.J. Comparative brain morphology of Neotropical parrots (Aves, Psittaciformes) inferred from virtual 3D endocasts. J. Anat. 2016;229(2):239-251.
http://dx.doi.org/10.1111/joa.12325