Conservation and change in the tectofugal visual system of mammals: A comparative study

The tectofugal pathway (TFP; retina-optic tectum-thalamus-visual pallium) is the main visual route to the telencephalon in amniotes. In mammals and birds, the tecto-thalamic portion of this pathway exhibits a diffuse and bilateral character that is originated exclusively from tectal ganglion cells (...

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Detalhes bibliográficos
Autor: Deichler-Carrasco, Alfonso
Formato: tesis doctoral
Estado:Versión publicada
Fecha de publicación:2020
País:Chile
OAI Identifier:oai:repositorio.anid.cl:10533/253204
Acesso em linha:https://hdl.handle.net/10533/253204
Access Level:acceso abierto
Palavra-chave:Ciencias Naturales
Otras Ciencias Naturales
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dc.title.es_CL.fl_str_mv Conservation and change in the tectofugal visual system of mammals: A comparative study
Conservación y cambio en la vía visual tectofugal de mamíferos: Un estudio comparado
title Conservation and change in the tectofugal visual system of mammals: A comparative study
spellingShingle Conservation and change in the tectofugal visual system of mammals: A comparative study
Deichler-Carrasco, Alfonso
Ciencias Naturales
Otras Ciencias Naturales
title_short Conservation and change in the tectofugal visual system of mammals: A comparative study
title_full Conservation and change in the tectofugal visual system of mammals: A comparative study
title_fullStr Conservation and change in the tectofugal visual system of mammals: A comparative study
title_full_unstemmed Conservation and change in the tectofugal visual system of mammals: A comparative study
title_sort Conservation and change in the tectofugal visual system of mammals: A comparative study
dc.creator.none.fl_str_mv Deichler-Carrasco, Alfonso
author Deichler-Carrasco, Alfonso
author_facet Deichler-Carrasco, Alfonso
author_role author
dc.contributor.advisor.none.fl_str_mv Mpodozis, Jorge
Marín, Gonzalo
dc.contributor.institution.es_CL.fl_str_mv UNIVERSIDAD DE CHILE
dc.subject.oecd1n.es_CL.fl_str_mv Ciencias Naturales
topic Ciencias Naturales
Otras Ciencias Naturales
dc.subject.oecd2n.es_CL.fl_str_mv Otras Ciencias Naturales
description The tectofugal pathway (TFP; retina-optic tectum-thalamus-visual pallium) is the main visual route to the telencephalon in amniotes. In mammals and birds, the tecto-thalamic portion of this pathway exhibits a diffuse and bilateral character that is originated exclusively from tectal ganglion cells (TGC). Thus, the TFP can be regarded as the ancestral amniote condition. However, the constancy of this trait in mammals is still uncertain, as bilateral TGC projections have only been reported in rodent species. In addition to thalamic projections, avian TGCs establish conspicuous reciprocal connections with nuclei in the isthmic and pretectal regions: the nucleus ithsmi pars parvocelullaris (Ipc) and the nucleus pretectalis principalis (PT), respectively. In mammals this association with the isthmus and pretectum has yet to be elucidated. In this project we sought to clarify three aspects of the hodological organization of the TGC-originated tectofugal pathway in mammals: First, using the diurnal rodent Octodon degus as a model, we investigated the organization of the isthmo-tectal connectivity. Second, we searched for the presence of a homologous to the avian PT. Finally, in order to make a clearer picture of the evolutionary history of the mammalian TFP we introduced the marsupial Thylamis elegans as a new comparative model to study the organization of visual pathways in basal mammals.
publishDate 2020
dc.date.issued.es_CL.fl_str_mv 2020
dc.date.accessioned.none.fl_str_mv 2022-03-28T19:28:07Z
2022-08-16T19:12:59Z
dc.date.available.none.fl_str_mv 2022-03-28T19:28:07Z
2022-08-16T19:12:59Z
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dc.type.tesis.none.fl_str_mv Tesis
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spelling UNIVERSIDAD DE CHILEDeichler-Carrasco, Alfonso2020https://hdl.handle.net/10533/253204http://purl.org/coar/access_right/c_abf2Otras Ciencias NaturalesCiencias NaturalesConservation and change in the tectofugal visual system of mammals: A comparative studyMpodozis, JorgeMarín, GonzaloUNIVERSIDAD DE CHILEChileDeichler-Carrasco, Alfonso2022-03-28T19:28:07Z2022-08-16T19:12:59Z2022-03-28T19:28:07Z2022-08-16T19:12:59Zinfo:eu-repo/date/embargoEnd/2023-06-012020The tectofugal pathway (TFP; retina-optic tectum-thalamus-visual pallium) is the main visual route to the telencephalon in amniotes. In mammals and birds, the tecto-thalamic portion of this pathway exhibits a diffuse and bilateral character that is originated exclusively from tectal ganglion cells (TGC). Thus, the TFP can be regarded as the ancestral amniote condition. However, the constancy of this trait in mammals is still uncertain, as bilateral TGC projections have only been reported in rodent species. In addition to thalamic projections, avian TGCs establish conspicuous reciprocal connections with nuclei in the isthmic and pretectal regions: the nucleus ithsmi pars parvocelullaris (Ipc) and the nucleus pretectalis principalis (PT), respectively. In mammals this association with the isthmus and pretectum has yet to be elucidated. In this project we sought to clarify three aspects of the hodological organization of the TGC-originated tectofugal pathway in mammals: First, using the diurnal rodent Octodon degus as a model, we investigated the organization of the isthmo-tectal connectivity. Second, we searched for the presence of a homologous to the avian PT. Finally, in order to make a clearer picture of the evolutionary history of the mammalian TFP we introduced the marsupial Thylamis elegans as a new comparative model to study the organization of visual pathways in basal mammals.La vía tecto-fugal (TFP; retina-tectum optico-thalamo-palio visual) es la principal ruta visual hacia el telencefalo en amniotas. En avez y mamíferos, la porción tecto-tálamica de esta vía exhibe un carácter bilateral y difuso y es originada exclusivamente por las células ganglionares tectales (TGC). Por tanto, la TFP puede ser considera como la condición amniota ancestral. Sin embargo, la constancia de este rasgo en mamíferos es aún incierta, en tanto que las proyecciones tectales bilaterales solo han sido reportadas en especies de roedores. Adicionalmente a las proyecciones tálamicas, las TCG avianas establecen conspicuas conexiones reciprocas con núcleos de la región del Istmo y el pretectum: el núcleo del istmo parvo celular (Ipc) y el núcleo pretectal principal (PT), respectivamente. En mamíferos esta asociación con el Istmo y el Pretectum aún debe ser establecida. En este proyecto buscamos clarificar estos tres aspectos de la organización hodológica de la vía tectofugal originada por las TGC en mamíferos: primero, utilizando al roedor diurno Octodon degus como modelo, investigaremos la organización de la conectividad Istmo-tectal. Segundo, buscaremos un núcleo homologo al PT de aves en el pretectum mamífero. Finalmente, un busca de establecer un panoramas más claro de la historia evolutiva de la vía TFP en mamíferos, introduciremos al marsupial Thylamis elegans como nuevo modelo de estudio de la organización de las vías visual en mamíferos básales.aun estamos trabajando en la publicación por pares del último capitulo de la tesis21161599https://hdl.handle.net/10533/253204instname: Conicytreponame: Repositorio Digital RI2.0info:eu-repo/grantAgreement//21161599info:eu-repo/semantics/dataset/hdl.handle.net/10533/93488info:eu-repo/semantics/openAccessCiencias NaturalesOtras Ciencias NaturalesConservation and change in the tectofugal visual system of mammals: A comparative studyConservación y cambio en la vía visual tectofugal de mamíferos: Un estudio comparadoinfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/publishedVersionTesisTesishttps://hdl.handle.net/10533/253204cef6f9a9-88d4-49fe-85b4-e9a01856a772virtual::57927-1cef6f9a9-88d4-49fe-85b4-e9a01856a772virtual::57927-1THUMBNAILTesis_A Deichler .pdf.jpgIM Thumbnailimage/jpeg3405https://repositorio.anid.cl/bitstreams/6d270cfe-5d18-4a97-91d3-60e059062f59/download6d816ce86a57415ac9066cf0e45191f9MD51TEXTTesis_A Deichler .pdf.txtExtracted texttext/plain336340https://repositorio.anid.cl/bitstreams/751228d6-1c26-48eb-8543-e279fed1fac6/download6ac1972228b9d915e9bbd31e9dfdab03MD52LICENSElicense.txttext/plain1779https://repositorio.anid.cl/bitstreams/d0e9edfd-270a-44f3-99ea-1d84cb33ddfb/download593a6e7305c66c56041a9f9e15a649c1MD53ORIGINALTesis_A Deichler .pdfapplication/pdf65432918https://repositorio.anid.cl/bitstreams/ec4611ea-681f-4c7f-bda2-2f9e6cfde377/downloadfbf3935d0dcd6ea12e6506e45d8d7975MD5410533/253204oai:repositorio.anid.cl:10533/2532042023-07-24 17:57:41.749https://repositorio.anid.clRepositorio ANIDaletelier@anid.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