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Sperm morphology in two house mouse subspecies: Do wild-derived strains and wild mice tell the same story?

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    SYSNO ASEP0441851
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleSperm morphology in two house mouse subspecies: Do wild-derived strains and wild mice tell the same story?
    Author(s) Albrechtová, Jana (UBO-W) SAI
    Albrecht, Tomáš (UBO-W) RID, SAI, ORCID
    Ďureje, Ľudovít (UBO-W) RID, SAI, SAI
    Pallazola, V. A. (US)
    Piálek, Jaroslav (UBO-W) RID
    Number of authors5
    Source TitlePLoS ONE
    Roč. 9, č. 12 (2014), e115669
    Number of pages15 s.
    Languageeng - English
    CountryUS - United States
    KeywordsMus musculus musculus ; hybrid zone ; multiple paternity ; Passerine birds ; Swimming velocity ; Central Europe ; Competition ; Speciation ; Common ; Size
    Subject RIVEG - Zoology
    R&D ProjectsGA206/08/0640 GA ČR - Czech Science Foundation (CSF)
    Institutional supportUBO-W - RVO:68081766
    UT WOS000347239900068
    EID SCOPUS84919934318
    DOI10.1371/journal.pone.0115669
    AnnotationBeing subject to intense post-copulatory selection, sperm size is a principal determining component of male fitness. Although previous studies have presented comparative sperm size data at higher taxonomic levels, information on the evolution of sperm size within species is generally lacking. Here, we studied two house mouse subspecies, Mus musculus musculus and Mus musculus domesticus, which undergo incipient speciation. We measured four sperm dimensions from cauda epididymis smears of 28 wild-caught mice of both subspecies. As inbred mouse strains are frequently used as proxies for exploring evolutionary processes, we further studied four wild-derived inbred strains from each subspecies. The subspecies differed significantly in terms of sperm head length and midpiece length, and these differences were consistent for wild mice and wild-derived strains pooled over genomes. When the inbred strains were analyzed individually, however, their strain-specific values were in some cases significantly shifted from subspecies-specific values derived from wild mice. We conclude that: (1) the size of sperm components differ in the two house mouse subspecies studied, and that (2) wild-derived strains reflect this natural polymorphism, serving as a potential tool to identify the genetic variation driving these evolutionary processes. Nevertheless, we suggest that more strains should be used in future experiments to account for natural variation and to avoid confounding results due to reduced variability and/or founder effect in the individual strains.
    WorkplaceInstitute of Vertebrate Biology
    ContactHana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524
    Year of Publishing2015