Naslov
Successful post-glacial colonization of Europe by single lineage of freshwater amphipod from its Pannonian Plio-Pleistocene diversification hotspot

Autori
Csapó, Hedvig ; Krzywoźniak, Paula ; Grabowski, Michał ; Wattier, Remi ; Bącela-Spychalska, Karolina ; Mamos, Tomasz ; Jelić, Mišel ; Rewicz, Tomasz

Izvornik
Scientific reports (2045-2322) 10 (2020), 1; 1-15

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Gammarus ; Amphipoda

Sažetak
Gammarus roeselii Gervais, 1835 is a morphospecies with a wide distribution range in Europe. The Balkan Peninsula is known as an area of pre- Pleistocene cryptic diversification within this taxon, resulting in at least 13 Molecular Operational Taxonomic Units (MOTUs). The morphospecies diversified there during Neogene and has probably invaded other parts of the continent very recently, in postglacial or even historical times. Thus, the detailed goals of our study were to (1) identify which lineage(s) colonized Central-Western Europe (CWE), (2) determine their possible geographical origin, (3) verify, whether the colonisation was associated with demographic changes. In total, 663 individuals were sequenced for the cytochrome oxidase I (COI) barcoding fragment and 137 individuals for the internal transcribed spacer II (ITS2). We identified two MOTUs in the study area with contrasting Barcode Index Number and haplotype diversities. The Pannonian Basin (PB) appeared to be a potential ice age refugium for the species, while CWE was colonised by a single lineage (also present in PB), displaying low genetic diversity. Our results suggest that G. roeselii is a relatively recent coloniser in CWE, starting demographic expansion around 10 kya.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA