The role of river drainages in shaping the genetic structure of capybara populations

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The capybara, Hydrochoerus hydrochaeris, is an herbivorous rodent widely distributed throughout most of South American wetlands that lives closely associated with aquatic environments. In this work, we studied the genetic structure of the capybara throughout part of its geographic range in Argentina...

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Autores principales: Byrne, María Soledad, Quintana, Ruben Dario, Bolkovic, María Luisa, Cassini, Marcelo Hernan, Tunez, Juan Ignacio
Formato: publishedVersion Artículo
Lenguaje:Inglés
Publicado: Springer 2015
Materias:
HYDROCHOERUS HYDROCHAERIS
MITOCHONDRIAL DNA
RIVER BASINS
SOUTH AMERICA
CIENCIAS BIOLÓGICAS
CIENCIAS NATURALES Y EXACTAS
Acceso en línea:https://ri.unsam.edu.ar/handle/123456789/981
Aporte de:
Repositorio Institucional de la UNSAM de Universidad Nacional de General San Martín
id I78-R216-123456789-981
record_format dspace
spelling I78-R216-123456789-9812023-03-27T19:33:02Z The role of river drainages in shaping the genetic structure of capybara populations Byrne, María Soledad Quintana, Ruben Dario Bolkovic, María Luisa Cassini, Marcelo Hernan Tunez, Juan Ignacio HYDROCHOERUS HYDROCHAERIS MITOCHONDRIAL DNA RIVER BASINS SOUTH AMERICA CIENCIAS BIOLÓGICAS CIENCIAS NATURALES Y EXACTAS info:eu-repo/semantics/publishedVersion The capybara, Hydrochoerus hydrochaeris, is an herbivorous rodent widely distributed throughout most of South American wetlands that lives closely associated with aquatic environments. In this work, we studied the genetic structure of the capybara throughout part of its geographic range in Argentina using a DNA fragment of the mitochondrial control region. Haplotypes obtained were compared with those available for populations from Paraguay and Venezuela. We found 22 haplotypes in 303 individuals. Hierarchical AMOVAs were performed to evaluate the role of river drainages in shaping the genetic structure of capybara populations at the regional and basin scales. In addition, two landscape genetic models, isolation by distance and isolation by resistance, were used to test whether genetic distance was associated with Euclidean distance (i.e. isolation by distance) or river corridor distance (i.e. isolation by resistance) at the basin scale. At the regional scale, the results of the AMOVA grouping populations by mayor river basins showed significant differences between them. At the basin scale, we also found significant differences between sub-basins in Paraguay, together with a significant correlation between genetic and river corridor distance. For Argentina and Venezuela, results were not significant. These results suggest that in Paraguay, the current genetic structure of capybaras is associated with the lack of dispersion corridors through permanent rivers. In contrast, limited structuring in Argentina and Venezuela is likely the result of periodic flooding facilitating dispersion. Fil: Byrne, María Soledad. Universidad Nacional de Luján. Departamento de Ciencias Básicas. Grupo de Estudios en Ecología de Mamíferos; Argentina. Fil: Quintana, Ruben Dario. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Fil: Bolkovic, María Luisa. Secretaría de Ambiente y Desarrallo Sustentable de la Nación; Argentina Fil: Cassini, Marcelo Hernan. Universidad Nacional de Luján. Departamento de Ciencias Básicas. Grupo de Estudios en Ecología de Mamíferos; Argentina. Fil: Tunez, Juan Ignacio. Universidad Nacional de Luján. Departamento de Ciencias Básicas. Grupo de Estudios en Ecología de Mamíferos; Argentina. 2015-09 info:eu-repo/semantics/article info:ar-repo/semantics/artículo Byrne, M. S.; Quintana, R. D.; Bolkovic, M. L.; Cassini, M. H.; Tunez, J. I. (sep 2015). The role of river drainages in shaping the genetic structure of capybara populations; Springer; Genetica; 143 (6) 645-656. 0016-6707 Genetica 2015 143(6) 645-656 https://ri.unsam.edu.ar/handle/123456789/981 eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Creative Commons Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5) application/pdf pp. 645-656 application/pdf Springer Genetica 2015 143(6) 645-656 https://doi.org/10.1007/s10709-015-9862-1
institution Universidad Nacional de General San Martín
institution_str I-78
repository_str R-216
collection Repositorio Institucional de la UNSAM
language Inglés
topic HYDROCHOERUS HYDROCHAERIS
MITOCHONDRIAL DNA
RIVER BASINS
SOUTH AMERICA
CIENCIAS BIOLÓGICAS
CIENCIAS NATURALES Y EXACTAS
spellingShingle HYDROCHOERUS HYDROCHAERIS
MITOCHONDRIAL DNA
RIVER BASINS
SOUTH AMERICA
CIENCIAS BIOLÓGICAS
CIENCIAS NATURALES Y EXACTAS
Byrne, María Soledad
Quintana, Ruben Dario
Bolkovic, María Luisa
Cassini, Marcelo Hernan
Tunez, Juan Ignacio
The role of river drainages in shaping the genetic structure of capybara populations
topic_facet HYDROCHOERUS HYDROCHAERIS
MITOCHONDRIAL DNA
RIVER BASINS
SOUTH AMERICA
CIENCIAS BIOLÓGICAS
CIENCIAS NATURALES Y EXACTAS
description The capybara, Hydrochoerus hydrochaeris, is an herbivorous rodent widely distributed throughout most of South American wetlands that lives closely associated with aquatic environments. In this work, we studied the genetic structure of the capybara throughout part of its geographic range in Argentina using a DNA fragment of the mitochondrial control region. Haplotypes obtained were compared with those available for populations from Paraguay and Venezuela. We found 22 haplotypes in 303 individuals. Hierarchical AMOVAs were performed to evaluate the role of river drainages in shaping the genetic structure of capybara populations at the regional and basin scales. In addition, two landscape genetic models, isolation by distance and isolation by resistance, were used to test whether genetic distance was associated with Euclidean distance (i.e. isolation by distance) or river corridor distance (i.e. isolation by resistance) at the basin scale. At the regional scale, the results of the AMOVA grouping populations by mayor river basins showed significant differences between them. At the basin scale, we also found significant differences between sub-basins in Paraguay, together with a significant correlation between genetic and river corridor distance. For Argentina and Venezuela, results were not significant. These results suggest that in Paraguay, the current genetic structure of capybaras is associated with the lack of dispersion corridors through permanent rivers. In contrast, limited structuring in Argentina and Venezuela is likely the result of periodic flooding facilitating dispersion.
format publishedVersion
Artículo
Artículo
author Byrne, María Soledad
Quintana, Ruben Dario
Bolkovic, María Luisa
Cassini, Marcelo Hernan
Tunez, Juan Ignacio
author_facet Byrne, María Soledad
Quintana, Ruben Dario
Bolkovic, María Luisa
Cassini, Marcelo Hernan
Tunez, Juan Ignacio
author_sort Byrne, María Soledad
title The role of river drainages in shaping the genetic structure of capybara populations
title_short The role of river drainages in shaping the genetic structure of capybara populations
title_full The role of river drainages in shaping the genetic structure of capybara populations
title_fullStr The role of river drainages in shaping the genetic structure of capybara populations
title_full_unstemmed The role of river drainages in shaping the genetic structure of capybara populations
title_sort role of river drainages in shaping the genetic structure of capybara populations
publisher Springer
publishDate 2015
url https://ri.unsam.edu.ar/handle/123456789/981
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