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Multiple parasites mediate balancing selection at two MHC class II genes in the fossorial water vole: insights from multivariate analyses and population genetics

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F08%3A00310942" target="_blank" >RIV/68081766:_____/08:00310942 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Multiple parasites mediate balancing selection at two MHC class II genes in the fossorial water vole: insights from multivariate analyses and population genetics

  • Original language description

    We investigated the factors mediating selection acting on two MHC class II genes (DQA and DRB) in water vole (Arvicola scherman) natural populations in the French Jura Mountains. Population genetics showed significant homogenity in allelic frequencies atthe DQA1 locus as opposed to neutral markers (nine microsatellites), indicating balancing selection acting on this gene. Moreover, almost exhaustive screening for parasites, including gastrointestinal helminths, brain coccidia and antibodies against viruses responsible for zoonoses, was carried out. We applied a co-inertia approach to the genetic and parasitological data sets to avoid statistical problems related to multiple testing. Two alleles, Arte-DRB-11 and Arte-DRB-15, displayed antagonistic associations with the nematode Trichuris arvicolae, revealing the potential parasite-mediated selection acting on DRB locus. Selection mechanisms acting on the two MHC class II genes thus appeared different.

  • Czech name

    Balancujici selekce na dvou MHC Class II genech je zprostředkována více druhy parazitů: výsledky vícerozměrných analýz a populační genetiky

  • Czech description

    V práci jsme analyzovali faktory, které jsou zodpovědné za selekci působící na dva MHC Class II geny (DQA a DRB) v populacích hryzce vodního v pohoří Jura (Francie). Balancující selekce působila výrazněji na gen DQA než na gen DRB. Vyčerpávající screening parazitofauny a následné vícerozměrné analýzy co-inertie prokázaly, že dvě alely genu DRB vykazovaly antagonistické asociace s parazitem Trichuris arvicolae. Selekční mechanismy působící na dva MHC Class II geny se tedy zdají být rozdílné, nicméně overdominance jako selekční mechanismus je dosti nepravděpodobný.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    EB - Genetics and molecular biology

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Evolutionary Biology

  • ISSN

    1010-061X

  • e-ISSN

  • Volume of the periodical

    21

  • Issue of the periodical within the volume

    5

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    14

  • Pages from-to

  • UT code for WoS article

    000258379600014

  • EID of the result in the Scopus database