Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations.
Tupinambis teguixin, the common tegu, is the only species of the genus found in Venezuela. It is distributed in different bioregions in the Neotropics, some of them separated by geographic barriers that may restrict gene flow among populations. Thus, to assess this possibility, we tested the Paleoge...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Costa Rica |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Idioma: | inglés |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/17962 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962 |
| Access Level: | acceso abierto |
| Palabra clave: | barreras geográficas ADN mitocondrial genética de poblaciones estructura poblacional Tupinambis teguixin Venezuela. geographic barriers mitochondrial DNA population genetics population structure |
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| dc.title.none.fl_str_mv |
Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations. Estructura genética de Tupinambis teguixin (Squamata: Teiidae), con énfasis en las poblaciones venezolanas. |
| title |
Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations. |
| spellingShingle |
Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations. Gols Ripoll, Ariana barreras geográficas ADN mitocondrial genética de poblaciones estructura poblacional Tupinambis teguixin Venezuela. geographic barriers mitochondrial DNA population genetics population structure Tupinambis teguixin Venezuela. |
| title_short |
Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations. |
| title_full |
Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations. |
| title_fullStr |
Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations. |
| title_full_unstemmed |
Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations. |
| title_sort |
Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations. |
| dc.creator.none.fl_str_mv |
Gols Ripoll, Ariana Herrera, Emilio A. Arrivillaga, Jazzmín |
| author |
Gols Ripoll, Ariana |
| author_facet |
Gols Ripoll, Ariana Herrera, Emilio A. Arrivillaga, Jazzmín |
| author_role |
author |
| author2 |
Herrera, Emilio A. Arrivillaga, Jazzmín |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
barreras geográficas ADN mitocondrial genética de poblaciones estructura poblacional Tupinambis teguixin Venezuela. geographic barriers mitochondrial DNA population genetics population structure Tupinambis teguixin Venezuela. |
| topic |
barreras geográficas ADN mitocondrial genética de poblaciones estructura poblacional Tupinambis teguixin Venezuela. geographic barriers mitochondrial DNA population genetics population structure Tupinambis teguixin Venezuela. |
| description |
Tupinambis teguixin, the common tegu, is the only species of the genus found in Venezuela. It is distributed in different bioregions in the Neotropics, some of them separated by geographic barriers that may restrict gene flow among populations. Thus, to assess this possibility, we tested the Paleogeographic hypothesis and the Riverine hypothesis for the divergence among populations. To this end, we evaluated the degree of genetic structuring in six populations of T. teguixin from Venezuela, plus one from Brazil and one from Ecuador. We used two molecular datasets, one with the populations from Venezuela (Venezuela dataset, 1 023 bp) and one including the other two (South America dataset, 665 bp), with 93 and 102 concatenated sequences from cytochrome b and ND4, and 38/37 haplotypes. We used three measures of genetic diversity: nucleotide diversity, haplotype diversity and number of polymorphic sites. Gene flow was estimated with the statistic ΦST and paired FST values. We also constructed a haplotype network. We found genetic structuring with (1) ΦST = 0.83; (2) high paired FST estimates (0.54 - 0.94); (3) haplotype networks with a well-defined geographic pattern; and (4) a single shared haplotype. The genetic structure does not seem to stem from geographic distance (r = 0.282, p = 0.209), but rather the product of an historic biogeographic event with the Mérida Andes and the Orinoco River (71.2 % of the molecular variance) as barriers. We propose the Zulia population as an Evolutionary Significant Unit and that the other populations be temporarily considered Management Units, pending further data. Populations Delta and Guri should form a single Management Unit since they share a haplotype. |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015-12-01 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion Contribution artículo original http://purl.org/coar/resource_type/c_2df8fbb1 info:eu-repo/semantics/article |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962 10.15517/rbt.v63i4.17962 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962 |
| identifier_str_mv |
10.15517/rbt.v63i4.17962 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962/21755 https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962/21756 https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962/34995 https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962/34996 |
| dc.rights.none.fl_str_mv |
Derechos de autor 2015 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 acceso abierto http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
Derechos de autor 2015 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 acceso abierto http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf text/html application/vnd.openxmlformats-officedocument.wordprocessingml.document application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| dc.publisher.none.fl_str_mv |
Universidad de Costa Rica |
| publisher.none.fl_str_mv |
Universidad de Costa Rica |
| dc.source.none.fl_str_mv |
Revista de Biología Tropical; Vol. 63 No. 4 (2015): Volume 63 – Regular number 4 – December 2015; 1235–1249 Revista de Biología Tropical; Vol. 63 Núm. 4 (2015): Volumen 63 – Número regular 4 – Diciembre 2015; 1235–1249 Revista Biología Tropical; Vol. 63 N.º 4 (2015): Volumen 63 – Número regular 4 – Diciembre 2015; 1235–1249 2215-2075 0034-7744 10.15517/rbt.v63i4 reponame:Portal de Revistas UCR instname:Universidad de Costa Rica instacron:UCR |
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Universidad de Costa Rica |
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UCR |
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UCR |
| reponame_str |
Portal de Revistas UCR |
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Portal de Revistas UCR |
| repository.name.fl_str_mv |
Portal de Revistas UCR - Universidad de Costa Rica |
| repository.mail.fl_str_mv |
jorge.polanco@ucr.ac.cr |
| _version_ |
1849325363965984768 |
| spelling |
Genetic structure of Tupinambis teguixin (Squamata: Teiidae), with emphasis on Venezuelan populations.Estructura genética de Tupinambis teguixin (Squamata: Teiidae), con énfasis en las poblaciones venezolanas.Gols Ripoll, ArianaHerrera, Emilio A.Arrivillaga, Jazzmínbarreras geográficasADN mitocondrialgenética de poblacionesestructura poblacionalTupinambis teguixinVenezuela.geographic barriersmitochondrial DNApopulation geneticspopulation structureTupinambis teguixinVenezuela.Tupinambis teguixin, the common tegu, is the only species of the genus found in Venezuela. It is distributed in different bioregions in the Neotropics, some of them separated by geographic barriers that may restrict gene flow among populations. Thus, to assess this possibility, we tested the Paleogeographic hypothesis and the Riverine hypothesis for the divergence among populations. To this end, we evaluated the degree of genetic structuring in six populations of T. teguixin from Venezuela, plus one from Brazil and one from Ecuador. We used two molecular datasets, one with the populations from Venezuela (Venezuela dataset, 1 023 bp) and one including the other two (South America dataset, 665 bp), with 93 and 102 concatenated sequences from cytochrome b and ND4, and 38/37 haplotypes. We used three measures of genetic diversity: nucleotide diversity, haplotype diversity and number of polymorphic sites. Gene flow was estimated with the statistic ΦST and paired FST values. We also constructed a haplotype network. We found genetic structuring with (1) ΦST = 0.83; (2) high paired FST estimates (0.54 - 0.94); (3) haplotype networks with a well-defined geographic pattern; and (4) a single shared haplotype. The genetic structure does not seem to stem from geographic distance (r = 0.282, p = 0.209), but rather the product of an historic biogeographic event with the Mérida Andes and the Orinoco River (71.2 % of the molecular variance) as barriers. We propose the Zulia population as an Evolutionary Significant Unit and that the other populations be temporarily considered Management Units, pending further data. Populations Delta and Guri should form a single Management Unit since they share a haplotype.Tupinambis teguixin es la única especie registrada para Venezuela. Este teido se encuentra distribuido en diferentes bioregiones del Neotrópico, en algunos casos separadas por barreras geográficas que pueden estar restringiendo el flujo genético entre sus poblaciones. Para evaluar esta posibilidad, pusimos a prueba las Hipótesis Paleogeográfica y la Rivereña. Para ello evaluamos el grado de estructuración genética de seis poblaciones de T. teguixin de Venezuela, una de Brasil y una de Ecuador. Utilizamos dos bases de datos moleculares, una con las poblaciones de Venezuela (Base de datos Venezuela, 1 023 pb) y la segunda incluyendo las otras dos poblaciones (Base de datos Suramérica, 665 pb), con 93 y 102 secuencias concatenadas de citocromo b y ND4, y 38/37 haplotipos. En cuanto a la metodología, utilizamos tres medidas de diversidad genética: diversidad nucleotídica, diversidad haplotípica y número de sitios polimórficos. Estimamos el flujo genético mediante el estadístico ΦST y los valores de FST pareados. También construimos redes de haplotipos. Los resultados evidencian estructura poblacional, encontrándose (1) un ΦST global de 0.83, (2) FST pareados altos (0.54-0.94), (3) redes de haplotipos con un patrón geográfico definido, cada población con sus haplotipos agrupados (menos Delta), Zulia y Ecuador con redes separadas, y (4) un solo haplotipo compartido entre las poblaciones. Los análisis muestran que la estructura no es producto de la distancia geográfica entre las poblaciones (r = 0.282, p = 0.209), sino un efecto histórico biogeográfico de la Cordillera de Mérida y del río Orinoco (71.19 % variación molecular), como barreras geográficas. Consideramos la población del Zulia una unidad evolutiva significativa y proponemos que las otras poblaciones temporalmente sean consideradas unidades de manejo, hasta tanto se tenga más información. Las poblaciones del Delta y Guri conformarán una sola unidad de manejo por compartir un haplotipo.Universidad de Costa Rica2015-12-01info:eu-repo/semantics/publishedVersionContributionartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleapplication/pdftext/htmlapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/vnd.openxmlformats-officedocument.wordprocessingml.documenthttps://revistas.ucr.ac.cr/index.php/rbt/article/view/1796210.15517/rbt.v63i4.17962Revista de Biología Tropical; Vol. 63 No. 4 (2015): Volume 63 – Regular number 4 – December 2015; 1235–1249Revista de Biología Tropical; Vol. 63 Núm. 4 (2015): Volumen 63 – Número regular 4 – Diciembre 2015; 1235–1249Revista Biología Tropical; Vol. 63 N.º 4 (2015): Volumen 63 – Número regular 4 – Diciembre 2015; 1235–12492215-20750034-774410.15517/rbt.v63i4reponame:Portal de Revistas UCRinstname:Universidad de Costa Ricainstacron:UCRenghttps://revistas.ucr.ac.cr/index.php/rbt/article/view/17962/21755https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962/21756https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962/34995https://revistas.ucr.ac.cr/index.php/rbt/article/view/17962/34996Derechos de autor 2015 Revista de Biología Tropicalhttp://creativecommons.org/licenses/by/4.0acceso abiertohttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccess2022-06-09T17:46:14Zoai:portal.ucr.ac.cr:article/17962Portal de revistashttps://revistas.ucr.ac.cr/Universidadhttp://www.ucr.ac.crhttps://revistas.ucr.ac.cr/index.php/index/oaijorge.polanco@ucr.ac.crCosta RicaNo aplicaNo aplicaNo aplicaopendoar:2025-08-13T10:17:44.500Portal de Revistas UCR - Universidad de Costa Ricafalse |
| score |
15,228081 |