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Evaluación preliminar de la estructura filogeográfica de la Tángara Triguera (Tangara cayana, Aves: Thraupidae) en la Orinoquía colombiana

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dc.contributor.advisorAvendaño, Jorge Enrique
dc.contributor.authorTejeiro Mahecha, Laura Nattaly
dc.date.accessioned2023-09-27T13:53:44Z
dc.date.available2023-09-27T13:53:44Z
dc.date.issued2016
dc.descriptionIncluye tablas, figuras y símbolos.spa
dc.description.abstractLos estudios sobre filogeografía de aves Neotropicales se han centrado en gran medida en taxones de bosques húmedos de tierras bajas. En contraste, poca atención ha sido dedicada al estudio de especies con ecologías propicias para la dispersión, tales como los asociados a ecosistemas no boscosos y acuáticos. A pesar de un incremento reciente en estudios filogeográficos de aves de ecosistemas no boscosos aún existe un vacío de conocimiento en ecosistemas de sabana al norte del río Amazonas. En este trabajo se evaluó la estructura filogeográfica de Tangara cayana con énfasis en la Orinoquia colombiana a partir de secuencias del gen mitocondrial ND2. A nivel de especie, las poblaciones mostraron baja estructura genética; sin embargo, se presentan tres haplogrupos correspondientes a poblaciones de Bolivia, Brasil y noreste de la Orinoquia colombiana, el sur de la Orinoquia colombiana y Amazonas. La baja estructura genética encontrada no concuerda con la delimitación tradicional de distritos biogeográficos para la Orinoquia. Las poblaciones de la Orinoquia colombiana probablemente derivaron de poblaciones de Brasil más que de Bolivia, lo cual posiblemente pudo ser promovido por la expansión de las sabanas durante las oscilaciones climáticas del Pleistoceno. Es de precisar que los resultados encontrados en este estudio deben ser complementados con un mayor número de muestras y poblaciones de T. cayana en la Orinoquia colombiana y venezolana, con la finalidad de obtener un escenario filogeográfico más completo de la especie.spa
dc.description.abstractPhylogeographic studies of Neotropical birds have mostly on taxa from the lowland humid forests. In contrast, little attention has been devoted to the study of species with ecologies with higher propensity for dispersal, such as those associated with non-forest and aquatic ecosystems. In this paper the phylogeographic structure in the Colombian Orinoquia of Tangara cayana was evaluated using sequenced data of mitochondrial ND2 gene. At the species level, populations exhibited shallow genetic structure; however, three haplogroups were represented in the Colombian Orinoquian savannahs, which have affinities with populations of Bolivia, Brazil and northeastern Colombia, and southern Colombia. The low genetic structure found does not match the traditional definition of biogeographic districts for Orinoquia. The populations of the Colombian Orinoco basin probably derived from Brazil, which possibly could be promoted by the expansion of savannahs during the Pleistocene climatic oscillations. Results from this study may be supplemented with samples from the Colombian and Venezuelan Orinoquian, in order to obtain a more complete phylogeographic scenario of the species.eng
dc.description.degreelevelPregradospa
dc.description.degreenameBiólogospa
dc.description.programBiologíaspa
dc.description.tableofcontentsLista de figuras. -- Lista de tablas. -- Lista de símbolos y abreviaturas. -- Planteamiento del problema. -- Hipótesis. -- Objetivos. -- Objetivo general. -- Objetivos específicos. – Justificación. -- Marco teórico. -- Metodología. -- Muestreo taxonómico y geográfico. -- Extracción de ADN, PCR y secuenciación. -- Análisis filogeográficos. – Resultados. -- Análisis filogenéticos. -- Estructura geográfica y diversidad genética. -- Historia demográfica y tiempos de divergencia. -- Discusión. -- Origen y diversificación de T. cayana. -- Estructura Genética Poblacional en la Orinoquia Colombiana. -- Conclusiones. -- Bibliografía.spa
dc.format.extent45 páginasspa
dc.format.mimetypeapplication/pdfspa
dc.identifier.citationTejeiro Mahecha, L. N. (2016). Evaluación preliminar de la estructura filogeográfica de la Tángara Triguera (Tangara cayana, Aves: Thraupidae) en la Orinoquia colombiana [Trabajo de grado, Universidad de los Llanos]. Repositorio digital Universidad de los Llanos. https://repositorio.unillanos.edu.co/handle/001/3028spa
dc.identifier.instnameUniversidad de los Llanosspa
dc.identifier.reponameRepositorio digital Universidad de los Llanosspa
dc.identifier.repourlhttps://repositorio.unillanos.edu.co/spa
dc.identifier.urihttps://repositorio.unillanos.edu.co/handle/001/3028
dc.language.isospaspa
dc.publisherUniversidad de los Llanosspa
dc.publisher.facultyFacultad de Ciencias Básicas e Ingenieríaspa
dc.publisher.placeVillavicenciospa
dc.relation.indexedN/Aspa
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dc.rightsDerechos Reservados - Universidad de los Llanos, 2016spa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.coarhttp://purl.org/coar/access_right/c_abf2spa
dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)spa
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/spa
dc.subject.armarcMigración de aves
dc.subject.armarcAves - Distribución geográfica
dc.subject.proposalSabanas neotropicalesspa
dc.subject.proposalPaleoecologíaspa
dc.subject.proposalDistritos biogeográficosspa
dc.subject.proposalEstructura genética.spa
dc.subject.proposalNeotropical savannaseng
dc.subject.proposalPaleoecologyeng
dc.subject.proposalBiogeographic districtseng
dc.subject.proposalGenetic structureeng
dc.titleEvaluación preliminar de la estructura filogeográfica de la Tángara Triguera (Tangara cayana, Aves: Thraupidae) en la Orinoquía colombianaspa
dc.typeTrabajo de grado - Pregradospa
dc.type.coarhttp://purl.org/coar/resource_type/c_7a1fspa
dc.type.coarversionhttp://purl.org/coar/version/c_970fb48d4fbd8a85spa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/bachelorThesisspa
dc.type.redcolhttps://purl.org/redcol/resource_type/TPspa
dc.type.versioninfo:eu-repo/semantics/publishedVersionspa
dspace.entity.typePublication

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