Glacial allopatry vs. postglacial parapatry and peripatry: the case of hedgehogs

PeerJ

article

Barbora Černa Bolfíková¹  Kristýna Eliášová²  Miroslava Loudová²  Boris Kryštufek⁴  Petros Lymberakis⁵  Attila D. Sándor⁶  Pavel Hulva² 

[1] Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague;Faculty of Science, Charles University in Prague;Department of Zoology, National Museum;Slovenian Museum of Natural History;Natural History Museum of Crete, University of Crete;Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca;Faculty of Science, University of Ostrava

关键词: Balkan;    Founder effect;    Genetic differentiation;    Interspecies interactions;    Landscape genetic;    Phylogeography;    Erinaceus roumanicus;   

DOI  :  10.7717/peerj.3163

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Although hedgehogs are well-known examples of postglacial recolonisation, the specific processes that shape their population structures have not been examined by detailed sampling and fast-evolving genetic markers in combination with model based clustering methods. This study aims to analyse the impacts of isolation within glacial refugia and of postglacial expansion on the population structure of the Northern White-breasted hedgehog (Erinaceus roumanicus). It also discusses the role of the processes at edges of species distribution in its evolutionary history. The maternally inherited mitochondrial control region and the bi-parentally inherited nuclear microsatellites were used to examine samples within the Central Europe, Balkan Peninsula and adjacent islands. Bayesian coalescent inference and neutrality tests proposed a recent increase in the population size. The most pronounced pattern of population structure involved differentiation of the insular populations in the Mediterranean Sea and the population within the contact zone with E. europaeus in Central Europe. An interspecies hybrid was detected for the first time in Central Europe. A low genetic diversity was observed in Crete, while the highest genetic distances among individuals were found in Romania. The recent population in the post-refugial area related to the Balkan Peninsula shows a complex pattern with pronounced subpopulations located mainly in the Pannonian Basin and at the Adriatic and Pontic coasts. Detailed analyses indicate that parapatry and peripatry may not be the only factors that limit range expansion, but also strong microevolutionary forces that may change the genetic structure of the species. Here we present evidence showing that population differentiation may occur not only during the glacial restriction of the range into the refugia, but also during the interglacial range expansion. Population differentiation at the Balkan Peninsula and adjacent regions could be ascribed to diversification in steppe/forest biomes and complicated geomorphology, including pronounced geographic barriers as Carpathians.

【 授权许可】

CC BY