Publicación:
Delimitación de especies del género Potamotrygon (Garman, 1877) mediante el uso de secuencias del gen mitocondrial Citocromo Oxidasa I (COI)

dc.contributor.advisorRodríguez Castro, Karen Giselle
dc.contributor.advisorRamirez Malaver, Jorge Luis
dc.contributor.authorUbaque Bernal, Jhoimar De Jesus
dc.date.accessioned2023-04-13T13:28:57Z
dc.date.available2023-04-13T13:28:57Z
dc.date.issued2022
dc.descriptionIncluye figuras, tablas y anexosspa
dc.description.abstractEl género Potamotrygon incluye 33 especies de rayas de rio, pero la identificación de sus especies ha presentado dificultades debido a la escasez de caracteres puntuales para identificar especies, su sistemática compleja con varios ejemplos de especies cripticas en todo su rango de distribución. Por tal razón la delimitación de especies utilizando características alternativas, como las moleculares, es importante en estos casos. El objetivo de este estudio fue delimitar las especies del género utilizando datos moleculares, comparar los resultados con las especies definidas con datos morfológicos y definir MOTUs (ingles Molecular operational Taxonomic Units) y relacionar su existencia con eventos evolutivos. Con el uso de 255 secuencias del gen citocromo oxidasa I (COI) obtenidas a partir de datos depositados en NCBI y BOLD de distintos autores y de diferentes localidades, realizamos la delimitación de especies de Potamotrygon con los métodos PTP, bPTP y GYMC. Para finalizar, se compararon las MOTUs encontradas con las regiones biogeográficas. Encontramos 84 haplotipos donde especies diferentes compartían un mismo haplotipo. Además, en el árbol ultramétrico se delimitaron por el análisis de GYMC 27 MOTUs, PTP 28MOTUs y bPTP 29 MOTUs. El consenso delimitó 28 MOTUs, que guardan relación con la región biogeográfica y en menor medida, con especies nominales. Ciertos MOTUs encontradas corresponden a las especies nominales de las secuencias trabajadas, sin embargo, algunas presentan inconsistencias. Sugerimos qué esto se debe a especies cripticas, una alta variabilidad morfológica y la existencia de complejos de especies. El número de regiones biogeográficas influencian en el número de MOTUs y algunas MOTUs son de amplia distribución mientras que algunas son propias de una única cuenca. Otro aspecto importante es que la historia evolutiva (biogeográfica) de las cuencas han influido en la alta diversidad de especies del género. Por último, la delimitación de especies utilizando métodos coalescentes con estas secuencias fue eficiente para el género Potamotrygon, los MOTUs obtenidos se ajustan adecuadamente a las regiones biogeográficas y la alta variabilidad de especies es explicada por los eventos evolutivos ocurridos en sus diferentes cuencas.spa
dc.description.degreelevelPregradospa
dc.description.degreenameBiólogospa
dc.description.programBiologíaspa
dc.description.tableofcontents1.Resumen. – 2. Planteamiento Del Problema. – 3. Objetivos. – 4. Objetivo general. -- 5. Objetivos específicos. – 6. Justificación. – 7. Marco Teórico. – 8. Identificación molecular: códigos de barras de ADN y aplicaciones. – 9. Bases de datos genéticas. – 10. Delimitación de especies. – 11. Estudios en peces; género Potamotrygon. Metodología. – 12. Obtención y análisis de secuencias. – 13. Delimitación de especies. – 14. Clasificación biogeográfica. – 15. Resultados. Discusión De Resultados. – 16. Conclusiones. – 17. Bibliografía. – 18. Anexos.spa
dc.format.extent44 Páginasspa
dc.format.mimetypeapplication/pdfspa
dc.identifier.citationUbaque Bernal, Jhoimar de J. (2022). Delimitación de especies del género Potamotrygon (Garman, 1877) mediante el uso de secuencias del gen mitocondrial Citocromo Oxidasa I (COI) [Trabajo de grado, Universidad de los Llanos]. Repositorio digital Universidad de los Llanos.spa
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/001/2849
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, 2022spa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.coarhttp://purl.org/coar/access_right/c_abf2spa
dc.rights.licenseAtribución-SinDerivadas 4.0 Internacional (CC BY-ND 4.0)spa
dc.rights.urihttps://creativecommons.org/licenses/by-nd/4.0/spa
dc.subject.armarcDegradación de hábitats
dc.subject.armarcBiodiversidad
dc.subject.proposalÁrbol ultramétricospa
dc.subject.proposalCuencas biogeograficasspa
dc.subject.proposalEspecies crípticasspa
dc.subject.proposalMOTUspa
dc.titleDelimitación de especies del género Potamotrygon (Garman, 1877) mediante el uso de secuencias del gen mitocondrial Citocromo Oxidasa I (COI)spa
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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