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Abstract:

We investigated the occurrence and anatomy of the vomeronasal system (VNS) in tadpoles of 13 different anuran species. All of the species possessed a morphologically fully developed VNS with a highly conserved anatomical organisation. We found that a bean-shaped vomeronasal organ (VNO) developed early in the tadpoles, during the final embryonic stages, and was located in the anteromedial nasal region. Histology revealed the presence of bipolar chemosensory neurones in the VNO that were immunoreactive for the Gαo protein. Tract-tracing experiments demonstrated that chemosensory neurones from the VNO reach specific areas in the brain, where a discernible accessory olfactory bulb (AOB) could be observed. The AOB was located in the ventrolateral side of the anterior telencephalon, somewhat caudal to the main olfactory bulb. Synaptophysin-like immunodetection revealed that synaptic contacts between VNO and AOB are established during early larval stages. Moreover, using lectin staining, we identified glomerular structures in the AOB in most of the species that we examined. According to our findings, a significant maturation in the VNS is achieved in anuran larvae. Recent published evidence strongly suggests that the VNS appeared early in vertebrate evolution and was already present in the aquatic last common ancestor of lungfish and tetrapods. In this context, tadpoles may be a good model in which to investigate the anatomical, biochemical and functional aspects of the VNS in an aquatic environment. © 2012 Anatomical Society.

Registro:

Documento: Artículo
Título:A putative functional vomeronasal system in anuran tadpoles
Autor:Jungblut, L.D.; Pozzi, A.G.; Paz, D.A.
Filiación:Laboratorio de Biologia del Desarrollo Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales Instituto, Fisiologia Biología Molecular y Neurociencias (IFIBYNE-CONICET) Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:Accessory olfactory system; Chemical sensing; G protein; Pheromones; Vomeronasal organ; guanine nucleotide binding protein alpha subunit; lectin; synaptophysin; animal tissue; Anura; article; brain region; embryo; embryo development; fetus; histology; larval development; nonhuman; olfactory bulb; priority journal; sensory nerve cell; tadpole; telencephalon; vomeronasal organ; Animals; Anura; Immunohistochemistry; Larva; Olfactory Bulb; Species Specificity; Vomeronasal Organ; Tetrapoda; Vertebrata
Año:2012
Volumen:221
Número:4
Página de inicio:364
Página de fin:372
DOI: http://dx.doi.org/10.1111/j.1469-7580.2012.01543.x
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_v221_n4_p364_Jungblut

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Citas:

---------- APA ----------
Jungblut, L.D., Pozzi, A.G. & Paz, D.A. (2012) . A putative functional vomeronasal system in anuran tadpoles. Journal of Anatomy, 221(4), 364-372.
http://dx.doi.org/10.1111/j.1469-7580.2012.01543.x
---------- CHICAGO ----------
Jungblut, L.D., Pozzi, A.G., Paz, D.A. "A putative functional vomeronasal system in anuran tadpoles" . Journal of Anatomy 221, no. 4 (2012) : 364-372.
http://dx.doi.org/10.1111/j.1469-7580.2012.01543.x
---------- MLA ----------
Jungblut, L.D., Pozzi, A.G., Paz, D.A. "A putative functional vomeronasal system in anuran tadpoles" . Journal of Anatomy, vol. 221, no. 4, 2012, pp. 364-372.
http://dx.doi.org/10.1111/j.1469-7580.2012.01543.x
---------- VANCOUVER ----------
Jungblut, L.D., Pozzi, A.G., Paz, D.A. A putative functional vomeronasal system in anuran tadpoles. J. Anat. 2012;221(4):364-372.
http://dx.doi.org/10.1111/j.1469-7580.2012.01543.x