biostudies-literatureOuisse TInstitut Polaire Français Paul Emile VictorInstitut National d'Ecologie et d'Evolution, Centre National de la Recherche ScientifiqueInstitut Universitaire de FranceNatural Environment Research Council1234https://www.ebi.ac.uk/biostudies/studies/S-EPMC6985133biostudies-literatureUnknown10(1)Climatic changes can induce geographic expansion and altitudinal shifts in the distribution of invasive species by offering more thermally suitable habitats. At the remote sub-Antarctic Kerguelen Islands, the predatory insect Merizodus soledadinus (Coleoptera: Carabidae), introduced in 1913, rapidly invaded coastal habitats. More recent colonisation of higher elevation habitats by this species could be underlain by their increased thermal suitability as the area has warmed. This study compared the effect of elevational range shift on the morphology and physiology of adult M. soledadinus sampled along two altitudinal transects (from the foreshore to 250 m a.s.l.) and a horizontal lowland transect orthogonal to the seashore (400 m length). Although high inter-individual and inter-transect vaScientific reportsEffects of elevational range shift on the morphology and physiology of a carabid beetle invading the sub-Antarctic Kerguelen Islands.PMC6985133Enviromics 'Aliens'Projet IPEV 136 SubantecoENVIEbas0100036Renault DLaville LOuisse TDay EHendrickx FConvey PfalseEffects of elevational range shift on the morphology and physiology of a carabid beetle invading the sub-Antarctic Kerguelen Islands.Climatic changes can induce geographic expansion and altitudinal shifts in the distribution of invasive species by offering more thermally suitable habitats. At the remote sub-Antarctic Kerguelen Islands, the predatory insect Merizodus soledadinus (Coleoptera: Carabidae), introduced in 1913, rapidly invaded coastal habitats. More recent colonisation of higher elevation habitats by this species could be underlain by their increased thermal suitability as the area has warmed. This study compared the effect of elevational range shift on the morphology and physiology of adult M. soledadinus sampled along two altitudinal transects (from the foreshore to 250 m a.s.l.) and a horizontal lowland transect orthogonal to the seashore (400 m length). Although high inter-individual and inter-transect va2020-01-01T00:00:00Z2020 Jan2025-04-04T09:44:42.873Z2020-05-22T08:35:03ZS-EPMC69851333198837010.1038/s41598-020-57868-0