A phylogeographic investigation of the hybrid origin of a species of swordtail fish from Mexico

Jones, Julia; Perez-Sato, Juan-Antonio; Meyer, Axel

A phylogeographic investigation of the hybrid origin of a species of swordtail fish from Mexico

Dateien

Meyer_209030.pdfGröße: 10.84 MBDownloads: 532

Datum

2012

Autor:innen

Jones, Julia

Perez-Sato, Juan-Antonio

Meyer, Axel

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie
Zukunftskolleg

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Molecular Ecology. 2012, 21(11), pp. 2692-2712. ISSN 0962-1083. eISSN 1365-294X. Available under: doi: 10.1111/j.1365-294X.2012.05571.x

Zusammenfassung

Hybrid speciation may contribute significantly to generating biodiversity, but only a few well-documented examples for it exist so far that do not involve polyploidization as a mechanism. The swordtail fish, Xiphophorus clemenciae, shows common hallmarks of a hybrid origin and still overlaps in its current geographic distribution with its putative ancestral species (Xiphophorus hellerii and Xiphophorus maculatus). Xiphophorus clemenciae provides an ideal system for investigating the possible continued genetic interactions between a hybrid and its parental species. Here, we use microsatellite and mitochondrial markers to investigate the population structure of these species of swordtails and search for signs of recent hybridization. Individuals were sampled from 21 localities across the known range of X. clemenciae– the Isthmus of Tehuantepec (IT) Mexico, and several environmental parameters that might represent barriers to dispersal were recorded. The hybridization event that gave rise to X. clemenciae appears to be rather ancient, and a single origin is likely. We find negligible evidence for ongoing hybridization and introgression between the putative ancestral species, because they now occupy distinct ecological niches, and a common haplotype is shared by most populations of X. clemenciae. The population structure within these species shows an isolation-by-distance (IBD) pattern and genetic differentiation between most populations is significant and high. We infer that tectonic evolution in the Isthmus has greatly restricted gene flow between the southern and central IT populations of X. clemenciae and X. helleriii and provide preliminary information to aid in conservation management of this geographically restricted hybrid species, X. clemenciae.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Zitieren

ISO 690

JONES, Julia, Juan-Antonio PEREZ-SATO, Axel MEYER, 2012. A phylogeographic investigation of the hybrid origin of a species of swordtail fish from Mexico. In: Molecular Ecology. 2012, 21(11), pp. 2692-2712. ISSN 0962-1083. eISSN 1365-294X. Available under: doi: 10.1111/j.1365-294X.2012.05571.x

BibTex

@article{Jones2012-06phylo-20903,
  year={2012},
  doi={10.1111/j.1365-294X.2012.05571.x},
  title={A phylogeographic investigation of the hybrid origin of a species of swordtail fish from Mexico},
  number={11},
  volume={21},
  issn={0962-1083},
  journal={Molecular Ecology},
  pages={2692--2712},
  author={Jones, Julia and Perez-Sato, Juan-Antonio and Meyer, Axel}
}

RDF

<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/20903">
    <dc:creator>Jones, Julia</dc:creator>
    <dcterms:bibliographicCitation>Molecular Ecology ; 21 (2012), 11. - S. 2692-2712</dcterms:bibliographicCitation>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2012-11-30T07:27:35Z</dc:date>
    <dcterms:issued>2012-06</dcterms:issued>
    <dc:creator>Meyer, Axel</dc:creator>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/20903"/>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/20903/2/Meyer_209030.pdf"/>
    <dcterms:abstract xml:lang="eng">Hybrid speciation may contribute significantly to generating biodiversity, but only a few well-documented examples for it exist so far that do not involve polyploidization as a mechanism. The swordtail fish, Xiphophorus clemenciae, shows common hallmarks of a hybrid origin and still overlaps in its current geographic distribution with its putative ancestral species (Xiphophorus hellerii and Xiphophorus maculatus). Xiphophorus clemenciae provides an ideal system for investigating the possible continued genetic interactions between a hybrid and its parental species. Here, we use microsatellite and mitochondrial markers to investigate the population structure of these species of swordtails and search for signs of recent hybridization. Individuals were sampled from 21 localities across the known range of X. clemenciae– the Isthmus of Tehuantepec (IT) Mexico, and several environmental parameters that might represent barriers to dispersal were recorded. The hybridization event that gave rise to X. clemenciae appears to be rather ancient, and a single origin is likely. We find negligible evidence for ongoing hybridization and introgression between the putative ancestral species, because they now occupy distinct ecological niches, and a common haplotype is shared by most populations of X. clemenciae. The population structure within these species shows an isolation-by-distance (IBD) pattern and genetic differentiation between most populations is significant and high. We infer that tectonic evolution in the Isthmus has greatly restricted gene flow between the southern and central IT populations of X. clemenciae and X. helleriii and provide preliminary information to aid in conservation management of this geographically restricted hybrid species, X. clemenciae.</dcterms:abstract>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:contributor>Jones, Julia</dc:contributor>
    <dcterms:title>A phylogeographic investigation of the hybrid origin of a species of swordtail fish from Mexico</dcterms:title>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:rights>terms-of-use</dc:rights>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-09-30T22:25:04Z</dcterms:available>
    <dc:language>eng</dc:language>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/20903/2/Meyer_209030.pdf"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/52"/>
    <dc:contributor>Meyer, Axel</dc:contributor>
    <dc:contributor>Perez-Sato, Juan-Antonio</dc:contributor>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:creator>Perez-Sato, Juan-Antonio</dc:creator>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/52"/>
  </rdf:Description>
</rdf:RDF>

Universitätsbibliographie

Ja