6533b7d7fe1ef96bd126913a
RESEARCH PRODUCT
Microevolution of bank voles (Myodes glareolus) at neutral and immune-related genes during multiannual dynamic cycles: consequences for Puumala hantavirus epidemiology.
Renaud VitalisMaria RazzautiLiina VoutilainenHeikki HenttonenNathalie CharbonnelMaxime GalanEmmanuel GuivierBertrand GauffreJukka NiemimaaAdelaïde DuboisAdelaïde DuboisJean-françois Cossonsubject
0301 basic medicineMaleMyxovirus Resistance Proteins0106 biological sciencesSELECTIONPopulation geneticsPopulation DynamicsGene ExpressionPopulation geneticsNATURAL-POPULATIONPuumala virus01 natural sciencesRodent DiseasesNephropathia epidemicaFinlandGeneticsMolecular Epidemiology0303 health scienceseducation.field_of_studyRodentArvicolinaeMicroevolutionBiological EvolutionBank voleInfectious DiseasesMHC DIVERSITYHemorrhagic Fever with Renal SyndromeHost-Pathogen Interactions[SDV.IMM]Life Sciences [q-bio]/ImmunologyFemaleDisease SusceptibilityDensity fluctuationsMicrobiology (medical)Gene FlowPopulationMetapopulationBiologyMicrobiology010603 evolutionary biology03 medical and health sciencesGenetic driftGeneticsmedicineImmunogeneticsAnimalsHumansPOPULATION-STRUCTUREAdaptationeducationMolecular BiologyEcology Evolution Behavior and SystematicsDisease Reservoirs030304 developmental biologyTOLL-LIKE RECEPTORSHost-pathogen interactionPolymorphism Genetic[SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE]MX2 PROTEINGenetic DriftNECROSIS-FACTOR-ALPHADENSITY-FLUCTUATIONSmedicine.diseasebiology.organism_classificationEUROPEAN ROE DEERToll-Like Receptor 4030104 developmental biologyToll-Like Receptor 7Evolutionary biology3121 General medicine internal medicine and other clinical medicineVoleRODENT HOST[SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosisdescription
ABSTRACTUnderstanding how host dynamics, including variations of population size and dispersal, may affect the epidemiology of infectious diseases through ecological and evolutionary processes is an active research area. Here we focus on a bank vole (Myodes glareolus) metapopulation surveyed in Finland between 2005 and 2009. Bank vole is the reservoir of Puumala hantavirus (PUUV), the agent of nephropathia epidemica (NE, a mild form of hemorrhagic fever with renal symptom) in humans.M glareoluspopulations experience multiannual density fluctuations that may influence the level of genetic diversity maintained in bank voles, PUUV prevalence and NE occurrence. We examine bank vole metapopulation genetics at presumably neutral markers and immune-related genes involved in susceptibility to PUUV (Tnf-promoter,Mhc-Drb, Tlr4,Tlr7andMx2gene) to investigate the links between population dynamics, microevolutionary processes and PUUV epidemiology. We show that genetic drift slightly and transiently affects neutral and adaptive genetic variability within the metapopulation. Gene flow seems to counterbalance its effects during the multiannual density fluctuations. The low abundance phase may therefore be too short to impact genetic variation in the host, and consequently viral genetic diversity. Environmental heterogeneity does not seem to affect vole gene flow, which might explain the absence of spatial structure previously detected in PUUV in this area. Besides, our results suggest the role of vole dispersal on PUUV circulation through sex-specific and density-dependent movements. We find little evidence of selection acting on immune-related genes within this metapopulation. Footprint of positive selection is detected atTlr-4gene in 2008 only. We observe marginally significant associations betweenMhc-Drbhaplotypes and PUUV serology, and betweenMx2genotype and PUUV genogroups. These results show that microevolutionary changes and PUUV epidemiology in this metapopulation are mainly driven by neutral processes, although the relative effects of neutral and adaptive forces could vary temporally with density fluctuations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-04-01 |