Extensive hybridization between two Andean warbler species with little divergence in mtDNA

Studying processes occurring when closely related taxa achieve secondary contact, such as hybridization, is important to fully understand how species are formed and maintained over time. However, studying these processes has been largely overlooked in studies of avian speciation in the Andes, which...

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Autores:
Céspedes Arias, Laura Natalia
Tipo de recurso:
Fecha de publicación:
2018
Institución:
Universidad de los Andes
Repositorio:
Séneca: repositorio Uniandes
Idioma:
eng
OAI Identifier:
oai:repositorio.uniandes.edu.co:1992/34183
Acceso en línea:
http://hdl.handle.net/1992/34183
Palabra clave:
Filogeografía - Investigaciones - Colombia
Filogeografía - Investigaciones - Ecuador
Aves paserinas - Investigaciones - Colombia
Aves paserinas - Investigaciones - Ecuador
Canto de las aves - Investigaciones - Colombia
Canto de las aves - Investigaciones - Ecuador
Aves paserinas - Hábitos y conducta - Investigaciones
Biología
Rights
openAccess
License
http://creativecommons.org/licenses/by-nc-sa/4.0/
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oai_identifier_str oai:repositorio.uniandes.edu.co:1992/34183
network_acronym_str UNIANDES2
network_name_str Séneca: repositorio Uniandes
repository_id_str
dc.title.es_CO.fl_str_mv Extensive hybridization between two Andean warbler species with little divergence in mtDNA
title Extensive hybridization between two Andean warbler species with little divergence in mtDNA
spellingShingle Extensive hybridization between two Andean warbler species with little divergence in mtDNA
Filogeografía - Investigaciones - Colombia
Filogeografía - Investigaciones - Ecuador
Aves paserinas - Investigaciones - Colombia
Aves paserinas - Investigaciones - Ecuador
Canto de las aves - Investigaciones - Colombia
Canto de las aves - Investigaciones - Ecuador
Aves paserinas - Hábitos y conducta - Investigaciones
Biología
title_short Extensive hybridization between two Andean warbler species with little divergence in mtDNA
title_full Extensive hybridization between two Andean warbler species with little divergence in mtDNA
title_fullStr Extensive hybridization between two Andean warbler species with little divergence in mtDNA
title_full_unstemmed Extensive hybridization between two Andean warbler species with little divergence in mtDNA
title_sort Extensive hybridization between two Andean warbler species with little divergence in mtDNA
dc.creator.fl_str_mv Céspedes Arias, Laura Natalia
dc.contributor.advisor.none.fl_str_mv Cadena Ordóñez, Carlos Daniel
Cuervo Maya, Andrés Mauricio
dc.contributor.author.none.fl_str_mv Céspedes Arias, Laura Natalia
dc.contributor.jury.none.fl_str_mv Taylor, Scott Anthony
Sánchez Muñoz, Juan Armando
dc.subject.keyword.es_CO.fl_str_mv Filogeografía - Investigaciones - Colombia
Filogeografía - Investigaciones - Ecuador
Aves paserinas - Investigaciones - Colombia
Aves paserinas - Investigaciones - Ecuador
Canto de las aves - Investigaciones - Colombia
Canto de las aves - Investigaciones - Ecuador
Aves paserinas - Hábitos y conducta - Investigaciones
topic Filogeografía - Investigaciones - Colombia
Filogeografía - Investigaciones - Ecuador
Aves paserinas - Investigaciones - Colombia
Aves paserinas - Investigaciones - Ecuador
Canto de las aves - Investigaciones - Colombia
Canto de las aves - Investigaciones - Ecuador
Aves paserinas - Hábitos y conducta - Investigaciones
Biología
dc.subject.themes.none.fl_str_mv Biología
description Studying processes occurring when closely related taxa achieve secondary contact, such as hybridization, is important to fully understand how species are formed and maintained over time. However, studying these processes has been largely overlooked in studies of avian speciation in the Andes, which have focused mainly on understanding the role of barriers promoting divergence. In this study I characterized a hybrid zone between two Andean birds, Myioborus ornatus and Myioborus melanocephalus, using genetic, coloration, and song data. Geographic ranges of these species abut around the Colombia-Ecuador border and specimens from the region exhibit intermediate phenotypes suggesting hybridization, but descriptions of patterns of variation were lacking. I conducted fieldwork to collect specimens and obtain recordings of vocalizations across a ca. 400 km transect around the Colombia-Ecuador border and localities away from the putative hybrid zone. I described variation in head color pattern, ventral coloration and tail pattern using specimens. To describe acoustic variation, I measured spectral and temporal parameters from songs. To describe genetic variation, I sequenced the gene ND2. I extended genetic sampling to encompass all main regions where these species occur to describe phylogeographic structure. The hybrid zone is characterized by low genetic structure and is ~200 km wide based on head coloration. Intermediate plumage phenotypes are the most common across the hybrid zone, suggesting extensive hybridization. Song duration is the only acoustic parameter that varies across the sampling transect. Specimens from the hybrid zone and Ecuadorian populations of M. melanocephalus belong to the same genetic group as M. ornatus, and there is low genetic structure within this group characterized by high diversity in plumage phenotypes. Patterns of variation in plumage suggest that selection against hybrids is not strong, a hypothesis that should be tested using genomic data
publishDate 2018
dc.date.issued.none.fl_str_mv 2018
dc.date.accessioned.none.fl_str_mv 2020-06-10T08:59:16Z
dc.date.available.none.fl_str_mv 2020-06-10T08:59:16Z
dc.type.spa.fl_str_mv Trabajo de grado - Maestría
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dc.identifier.uri.none.fl_str_mv http://hdl.handle.net/1992/34183
dc.identifier.pdf.none.fl_str_mv u806954.pdf
dc.identifier.instname.spa.fl_str_mv instname:Universidad de los Andes
dc.identifier.reponame.spa.fl_str_mv reponame:Repositorio Institucional Séneca
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url http://hdl.handle.net/1992/34183
identifier_str_mv u806954.pdf
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dc.language.iso.es_CO.fl_str_mv eng
language eng
dc.rights.uri.*.fl_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
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dc.format.extent.es_CO.fl_str_mv 59 hojas
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dc.publisher.es_CO.fl_str_mv Uniandes
dc.publisher.program.es_CO.fl_str_mv Maestría en Ciencias Biológicas
dc.publisher.faculty.es_CO.fl_str_mv Facultad de Ciencias
dc.publisher.department.es_CO.fl_str_mv Departamento de Biología
dc.source.es_CO.fl_str_mv instname:Universidad de los Andes
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spelling Al consultar y hacer uso de este recurso, está aceptando las condiciones de uso establecidas por los autores.http://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Cadena Ordóñez, Carlos Daniel11f352d0-2b8e-4d71-857a-dacb2dd611a6400Cuervo Maya, Andrés Mauriciob490bda7-0253-4317-9f9c-d49258977e76500Céspedes Arias, Laura Natalia27468500Taylor, Scott AnthonySánchez Muñoz, Juan Armando2020-06-10T08:59:16Z2020-06-10T08:59:16Z2018http://hdl.handle.net/1992/34183u806954.pdfinstname:Universidad de los Andesreponame:Repositorio Institucional Sénecarepourl:https://repositorio.uniandes.edu.co/Studying processes occurring when closely related taxa achieve secondary contact, such as hybridization, is important to fully understand how species are formed and maintained over time. However, studying these processes has been largely overlooked in studies of avian speciation in the Andes, which have focused mainly on understanding the role of barriers promoting divergence. In this study I characterized a hybrid zone between two Andean birds, Myioborus ornatus and Myioborus melanocephalus, using genetic, coloration, and song data. Geographic ranges of these species abut around the Colombia-Ecuador border and specimens from the region exhibit intermediate phenotypes suggesting hybridization, but descriptions of patterns of variation were lacking. I conducted fieldwork to collect specimens and obtain recordings of vocalizations across a ca. 400 km transect around the Colombia-Ecuador border and localities away from the putative hybrid zone. I described variation in head color pattern, ventral coloration and tail pattern using specimens. To describe acoustic variation, I measured spectral and temporal parameters from songs. To describe genetic variation, I sequenced the gene ND2. I extended genetic sampling to encompass all main regions where these species occur to describe phylogeographic structure. The hybrid zone is characterized by low genetic structure and is ~200 km wide based on head coloration. Intermediate plumage phenotypes are the most common across the hybrid zone, suggesting extensive hybridization. Song duration is the only acoustic parameter that varies across the sampling transect. Specimens from the hybrid zone and Ecuadorian populations of M. melanocephalus belong to the same genetic group as M. ornatus, and there is low genetic structure within this group characterized by high diversity in plumage phenotypes. Patterns of variation in plumage suggest that selection against hybrids is not strong, a hypothesis that should be tested using genomic data"Estudiar los procesos que suceden después de que taxones estrechamente relacionados entran en contacto secundario (Ej: hibridación) es clave para entender cómo se forman y mantienen las especies en el tiempo. Sin embargo, estos procesos ha sido pasados por alto en gran medida en los estudios de especiación de aves andinas, que se han centrado en entender el papel de barreras geográficas promoviendo divergencia. En este estudio, caractericé una zona híbrida entre dos aves andinas, Myioborus ornatus y Myioborus melanocephalus, usando datos genéticos, de coloración y de canto. Recolecté especímenes y obtuve grabaciones de cantos a través de ca. 400 km alrededor de la frontera entre Colombia y Ecuador, donde las distribuciones de estas especies se reemplazan, y en localidades alejadas. Describí la variación en el patrón de color de la cabeza, la coloración ventral y el patrón de la cola en pieles de estudio. Para describir la variación acústica, medí parámetros espectrales y temporales en los cantos. Para describir la variación genética, secuencié el gen ND2. Amplié el muestreo para abarcar todas las regiones donde se encuentran estas especies y describir la estructura filogeográfica. La zona híbrida se caracteriza por baja estructura genética y tiene ~200 km de ancho de acuerdo con la variación en la coloración de la cabeza. Los fenotipos intermedios son los más comunes en la zona híbrida. La duración es el único parámetro del canto que varía a lo largo del transecto de muestreo. Los especímenes de la zona híbrida y poblaciones ecuatorianas de M. melanocephalus pertenecen al mismo grupo genético que M. ornatus, el cual se caracteriza por una baja estructura genética y gran diversidad en patrones de coloración. Los patrones de variación en el plumaje sugieren que la selección en contra de los híbridos es débil, una hipótesis que debe ser evaluada usando datos genómicos."--Tomado del Formato de Documento de Grado.Magíster en Ciencias BiológicasMaestría59 hojasapplication/pdfengUniandesMaestría en Ciencias BiológicasFacultad de CienciasDepartamento de Biologíainstname:Universidad de los Andesreponame:Repositorio Institucional SénecaExtensive hybridization between two Andean warbler species with little divergence in mtDNATrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesishttp://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/TMFilogeografía - Investigaciones - ColombiaFilogeografía - Investigaciones - EcuadorAves paserinas - Investigaciones - ColombiaAves paserinas - Investigaciones - EcuadorCanto de las aves - Investigaciones - ColombiaCanto de las aves - Investigaciones - EcuadorAves paserinas - Hábitos y conducta - InvestigacionesBiologíaPublicationTHUMBNAILu806954.pdf.jpgu806954.pdf.jpgIM Thumbnailimage/jpeg7909https://repositorio.uniandes.edu.co/bitstreams/a06b8d3d-af4c-4f52-8cc0-aec592936554/download2326a552a9c601f14e42bafaf1023ff2MD55TEXTu806954.pdf.txtu806954.pdf.txtExtracted texttext/plain131237https://repositorio.uniandes.edu.co/bitstreams/194358b7-f5bb-460a-9c1d-f2a03c42c262/download972e42a63f56d9a8bab6c57d2545aec7MD54ORIGINALu806954.pdfapplication/pdf5503118https://repositorio.uniandes.edu.co/bitstreams/9f618900-3a8c-4251-a3fb-0cb675afcf55/downloadb761400b90efb4343c18116c51e848bdMD511992/34183oai:repositorio.uniandes.edu.co:1992/341832023-10-10 17:57:12.301http://creativecommons.org/licenses/by-nc-sa/4.0/open.accesshttps://repositorio.uniandes.edu.coRepositorio institucional Sénecaadminrepositorio@uniandes.edu.co