Informace o publikaci

Epigean gammarids survived millions of years of severe climatic fluctuations in high latitude refugia throughout the Western Carpathians

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COPILA?-CIOCIANU Denis RUTHOVÁ Tereza PAŘIL Petr PETRUSEK Adam

Rok publikování 2017
Druh Článek v odborném periodiku
Časopis / Zdroj Molecular Phylogenetics and Evolution
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://reader.elsevier.com/reader/sd/pii/S105579031730341X?token=1C0BF9FC1248A32121CC5959E44DE68CD0EB6B0B8495420F8946B7EF7D1F1004E483927562661BD2C678D73DC6EA78E8
Doi http://dx.doi.org/10.1016/j.ympev.2017.04.027
Obor Genetika a molekulární biologie
Klíčová slova Biogeographical barrier; Cryptic diversity; Endemicity; Gammarus fossarum; Northern refugium; Phylogeny
Popis Isolated glacial refugia have been documented in Central Europe for a number of taxa, but conclusive evidence for epigean aquatic species has remained elusive. Using molecular data (mitochondrial and nuclear markers), we compared the spatial patterns of lineage diversity of the widely distributed Gammarus fossarum species complex between two adjacent biogeographically and geomorphologically distinct Central European regions: the Bohemian Massif and the Western Carpathians. We investigated if the observed patterns of spatial diversity are more likely to stem from historical or present-day factors. Phylogenetic and phylogeographic analyses revealed eight phylogenetically diverse lineages: two exhibiting local signatures of recent demographic expansion inhabit both regions, while the other six display a relict distributional pattern and are found only in the Western Carpathians. Molecular dating indicates that these lineages are old and probably diverged throughout the Miocene (7–18 Ma). Furthermore, their distribution does not seem to be constrained by the present boundaries of river catchments or topography. The contrasting spatial patterns of diversity observed between the two regions thus more likely result from historical rather than contemporaneous or recent factors. Our results indicate that despite the high latitude and proximity to the Pleistocene ice sheets, the Western Carpathians functioned as long-term glacial refugia for permanent freshwater fauna, allowing the uninterrupted survival of ancient lineages through millions of years of drastic climatic fluctuations.

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