Differences in vocal brain areas and astrocytes between the house wren and the rufous-tailed hummingbird

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dc.contributor.authorLopez-Murillo, Carolina
dc.contributor.authorHinestroza-Morales, Santiago
dc.contributor.authorHenny, Pablo
dc.contributor.authorToledo, Jorge
dc.contributor.authorCardona-Gomez, Gloria Patricia
dc.contributor.authorRivera-Gutierrez, Hector
dc.contributor.authorPosada-Duque, Rafael
dc.date.accessioned2025-01-20T17:06:09Z
dc.date.available2025-01-20T17:06:09Z
dc.date.issued2024
dc.description.abstractThe house wren shows complex song, and the rufous-tailed hummingbird has a simple song. The location of vocal brain areas supports the song's complexity; however, these still need to be studied. The astrocytic population in songbirds appears to be associated with change in vocal control nuclei; however, astrocytic distribution and morphology have not been described in these species. Consequently, we compared the distribution and volume of the vocal brain areas: HVC, RA, Area X, and LMAN, cell density, and the morphology of astrocytes in the house wren and the rufous-tailed hummingbird. Individuals of the two species were collected, and their brains were analyzed using serial Nissl- NeuN- and MAP2-stained tissue scanner imaging, followed by 3D reconstructions of the vocal areas; and GFAP and S100 beta astrocytes were analyzed in both species. We found that vocal areas were located close to the cerebral midline in the house wren and a more lateralized position in the rufous-tailed hummingbird. The LMAN occupied a larger volume in the rufous-tailed hummingbird, while the RA and HVC were larger in the house wren. While Area X showed higher cell density in the house wren than the rufous-tailed hummingbird, the LMAN showed a higher density in the rufous-tailed hummingbird. In the house wren, GFAP astrocytes in the same bregma where the vocal areas were located were observed at the laminar edge of the pallium (LEP) and in the vascular region, as well as in vocal motor relay regions in the pallidum and mesencephalon. In contrast, GFAP astrocytes were found in LEP, but not in the pallidum and mesencephalon in hummingbirds. Finally, when comparing GFAP astrocytes in the LEP region of both species, house wren astrocytes exhibited significantly more complex morphology than those of the rufous-tailed hummingbird. These findings suggest a difference in the location and cellular density of vocal circuits, as well as morphology of GFAP astrocytes between the house wren and the rufous-tailed hummingbird.
dc.fuente.origenWOS
dc.identifier.doi10.3389/fnana.2024.1339308
dc.identifier.issn1662-5129
dc.identifier.urihttps://doi.org/10.3389/fnana.2024.1339308
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90764
dc.identifier.wosidWOS:001198889200001
dc.language.isoen
dc.revistaFrontiers in neuroanatomy
dc.rightsacceso restringido
dc.subjectvocal areas
dc.subjectHVC
dc.subjectLMAN
dc.subjectRA
dc.subjectastrocytes
dc.subjectGFAP
dc.subjecthummingbird
dc.subjectsongbird
dc.subject.ods15 Life on Land
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleDifferences in vocal brain areas and astrocytes between the house wren and the rufous-tailed hummingbird
dc.typeartículo
dc.volumen18
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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