Ultrastructural study of retinal development in the turtle Trachemys scripta elegans

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Title: Ultrastructural study of retinal development in the turtle Trachemys scripta elegans
Authors: Segovia Huertas, Yolanda | García Irles, Magdalena | Gómez-Torres, María José | Mengual Molina, Rosa María
Research Group/s: Grupo de Inmunología
Center, Department or Service: Universidad de Alicante. Departamento de Biotecnología
Keywords: Trachemys scripta elegans | Embryogenesis | Synaptogenesis | Retinal development | Ultrastructure
Knowledge Area: Biología Celular
Issue Date: Jun-2016
Publisher: Springer Berlin Heidelberg
Citation: Zoomorphology. 2016, 135(2): 205-216. doi:10.1007/s00435-016-0308-9
Abstract: The present study was conducted by using light and transmission electron microscopy to examine the morphologic development of turtle retina from embryonic stage 18 (S18) to S26 (hatching). Particular attention was paid to the formation of functional structures such as neurites, synapses, photoreceptors, among others, and the moment that chemical synapses appear in the outer and inner plexiform layers. The results show that retinal differentiation in the turtle follows the vitreal to scleral morphological differentiation of retinal cells. Moreover, the central region of the optic cup is most advanced compared to the peripheral parts. Early functional plexiform layers, based on appearance of synapses, precede the complete differentiation of photoreceptors. The first synaptic structures occur in the inner plexiform layer before the outer plexiform layer. Receptor outer segments and first synaptic ribbon in receptor synaptic terminals initiate the differentiation at the same time, but final maturation includes dendritic invaginations of bipolar and horizontal cells in the receptor terminals. We assume that at birth, the turtle retina has achieved the ability to see.
Sponsor: This research was supported by University of Alicante VIGROB-186.
URI: http://hdl.handle.net/10045/63472
ISSN: 0720-213X (Print) | 1432-234X (Online)
DOI: 10.1007/s00435-016-0308-9
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Springer-Verlag Berlin Heidelberg 2016. The final publication is available at Springer via http://dx.doi.org/10.1007/s00435-016-0308-9
Peer Review: si
Publisher version: http://dx.doi.org/10.1007/s00435-016-0308-9
Appears in Collections:INV - Grupo de Inmunología - Artículos de Revistas

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