Naslov
Continental-scale patterns of hyper-cryptic diversity (HCD) within a freshwater model species: Gammarus fossarum (Crustacea Amphipoda)
(Continental-scale patterns of hyper-cryptic diversity within the freshwater model taxon Gammarus fossarum (Crustacea, Amphipoda))

Autori
Wattier, Remi ; Mamos, Tomasz ; Copilas- Ciocianu, Denis ; Jelić, Mišel ; Ollivier, Anthony ; Chaumot, Arnaud ; Danger, Michael ; Felten, Vincent ; Piscart, Christophe ; Žganec, Krešimir ; Rewicz, Tomasz ; Wysocka, Anna ; Rigaud, Thierry ; Grabowski, Michał

Izvornik
Scientific reports (2045-2322) 10 (2020); 16536, 16

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

Ključne riječi
cryptic diversity ; barcoding ; distribution ; freshwater ; Crustacea, amphipod, Gammarus fossarum

Sažetak
Traditional morphological diagnoses of taxonomic status remain widely used while an increasing number of studies show that one morphospecies might hide cryptic diversity, i.e. lineages with unexpectedly high molecular divergence. This hidden diversity can reach even tens of lineages, i.e. hyper cryptic diversity. Even well-studied model-organisms may exhibit overlooked cryptic diversity. Such is the case of the freshwater crustacean amphipod model species Gammarus fossarum. It is extensively used in both applied and basic types of research, including biodiversity assessments, ecotoxicology and evolutionary ecology. Based on COI barcodes of 4, 926 individuals from 498 sampling sites in 19 European countries, the present paper shows 1) hyper cryptic diversity, ranging from 84 to 152 Molecular Operational Taxonomic Units, 2) ancient diversification starting already 26 Mya in the Oligocene, and 3) high level of lineage syntopy. Even if hyper cryptic diversity was already documented in G. fossarum, the present study increases its extent fourfold, providing a first continental-scale insight into its geographical distribution and establishes several diversification hotspots, notably south-eastern and central Europe. The challenges of recording hyper cryptic diversity in the future are also discussed.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA