Hybrid origin of a swordtail species (Teleostei: Xiphophorus clemenciae) driven by sexual selection

Meyer, Axel; Salzburger, Walter; Schartl, Manfred

Hybrid origin of a swordtail species (Teleostei: Xiphophorus clemenciae) driven by sexual selection

Dateien

hybrid_origin_of_a_swordtail_species_driven_by_sexual_selection_2006.pdfGröße: 1016.22 KBDownloads: 1088

Datum

2006

Autor:innen

Meyer, Axel

Salzburger, Walter

Schartl, Manfred

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie
Zukunftskolleg

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Molecular Ecology. 2006, 15(3), pp. 721-730. ISSN 0962-1083. eISSN 0962-1083. Available under: doi: 10.1111/j.1365-294X.2006.02810.x

Zusammenfassung

The swordlike exaggerated caudal fin extensions of male swordtails are conspicuous traits that are selected for through female choice. Swords are one of only few examples where the hypothesis of a pre-existing bias is believed to apply for the evolution of a male trait. Previous laboratory experiments demonstrated that females prefer males with longer swords and even females from some swordless species show an affiliation for males of sworded species. Earlier phylogenetic studies based on maternally inherited mitochondrial DNA placed the sworded southern swordtail Xiphophorus clemenciae with swordless platies, contradicting its morphology-based evolutionary affinities. The analyses of new nuclear DNA markers now recover its traditional phylogenetic placement with other southern swordtails, suggesting that this species was formed by an ancient hybridization event. We propose that sexual selection through female choice was the likely process of hybrid speciation, by mating of platy females with males of an ancestral swordtail lineage. In artificial crosses of descendent species from the two potential ancestral lineages of X. clemenciae the hybrid and backcross males have swords of intermediate lengths. Additionally, mate choice experiments demonstrate that hybrid females prefer sworded males. These experimental lines of evidence make hybridization through xeno-specific sexual selection by female choice the likely mechanism of speciation.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

hybrid speciation, mate choice experiment, nuclear DNA phylogeny, sexual selection, xeno-specific sexual selection

Zitieren

ISO 690

MEYER, Axel, Walter SALZBURGER, Manfred SCHARTL, 2006. Hybrid origin of a swordtail species (Teleostei: Xiphophorus clemenciae) driven by sexual selection. In: Molecular Ecology. 2006, 15(3), pp. 721-730. ISSN 0962-1083. eISSN 0962-1083. Available under: doi: 10.1111/j.1365-294X.2006.02810.x

BibTex

@article{Meyer2006Hybri-8624,
  year={2006},
  doi={10.1111/j.1365-294X.2006.02810.x},
  title={Hybrid origin of a swordtail species (Teleostei: Xiphophorus clemenciae) driven by sexual selection},
  number={3},
  volume={15},
  issn={0962-1083},
  journal={Molecular Ecology},
  pages={721--730},
  author={Meyer, Axel and Salzburger, Walter and Schartl, Manfred}
}

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/123456789/8624">
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/8624"/>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:format>application/pdf</dc:format>
    <dcterms:title>Hybrid origin of a swordtail species (Teleostei: Xiphophorus clemenciae) driven by sexual selection</dcterms:title>
    <dcterms:bibliographicCitation>First publ. in: Molecular Ecology 15 (2006), 3, pp. 721-730</dcterms:bibliographicCitation>
    <dc:language>eng</dc:language>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:creator>Salzburger, Walter</dc:creator>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/8624/1/hybrid_origin_of_a_swordtail_species_driven_by_sexual_selection_2006.pdf"/>
    <dc:creator>Schartl, Manfred</dc:creator>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/52"/>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/52"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:45:13Z</dcterms:available>
    <dc:contributor>Schartl, Manfred</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:45:13Z</dc:date>
    <dcterms:issued>2006</dcterms:issued>
    <dc:creator>Meyer, Axel</dc:creator>
    <dc:rights>Attribution-NonCommercial-NoDerivs 2.0 Generic</dc:rights>
    <dc:contributor>Salzburger, Walter</dc:contributor>
    <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by-nc-nd/2.0/"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:contributor>Meyer, Axel</dc:contributor>
    <dcterms:abstract xml:lang="eng">The swordlike exaggerated caudal fin extensions of male swordtails are conspicuous traits that are selected for through female choice. Swords are one of only few examples where the hypothesis of a pre-existing bias is believed to apply for the evolution of a male trait. Previous laboratory experiments demonstrated that females prefer males with longer swords and even females from some swordless species show an affiliation for males of sworded species. Earlier phylogenetic studies based on maternally inherited mitochondrial DNA placed the sworded southern swordtail Xiphophorus clemenciae with swordless platies, contradicting its morphology-based evolutionary affinities. The analyses of new nuclear DNA markers now recover its traditional phylogenetic placement with other southern swordtails, suggesting that this species was formed by an ancient hybridization event. We propose that sexual selection through female choice was the likely process of hybrid speciation, by mating of platy females with males of an ancestral swordtail lineage. In artificial crosses of descendent species from the two potential ancestral lineages of X. clemenciae the hybrid and backcross males have swords of intermediate lengths. Additionally, mate choice experiments demonstrate that hybrid females prefer sworded males. These experimental lines of evidence make hybridization through xeno-specific sexual selection by female choice the likely mechanism of speciation.</dcterms:abstract>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/8624/1/hybrid_origin_of_a_swordtail_species_driven_by_sexual_selection_2006.pdf"/>
  </rdf:Description>
</rdf:RDF>

Universitätsbibliographie

Ja