Population structure and dispersal routes of an invasive parasite, Fascioloides magna, in North America and Europe

0468754 - BC 2017 RIV GB eng J - Článek v odborném periodiku
Juhasova, L. - Kraľová-Hromadová, I. - Bazsalovicsová, E. - Minárik, G. - Štefka, Jan - Mikulíček, P. - Pálková, L. - Pybus, M.
Population structure and dispersal routes of an invasive parasite, Fascioloides magna, in North America and Europe.
Parasites & Vectors. Roč. 9, OCT 13 (2016), č. článku 547. ISSN 1756-3305. E-ISSN 1756-3305
Institucionální podpora: RVO:60077344
Klíčová slova: microsatellites * parasite * giant liver fluke * Fascioloides magna * genetic interrelationships * migratory routes
Kód oboru RIV: EB - Genetika a molekulární biologie
Impakt faktor: 3.035, rok: 2016

Fascioloides magna (Trematoda: Fasciolidae) is an important liver parasite of a wide range of free-living and domestic ruminants; it represents a remarkable species due to its large spatial distribution, invasive character, and potential to colonize new territories. The present study provides patterns of population genetic structure and admixture in F. magna across all enzootic regions in North America and natural foci in Europe, and infers migratory routes of the parasite on both continents.
The analysis of dispersal routes of the parasite in North America revealed west-east and south-north lineages that partially overlapped in the central part of the continent, where different host populations historically met. The exact origin of European populations of F. magna and their potential translocation routes were determined. Flukes from the first European focus, Italy, were related to F. magna from northern Pacific coast, while parasites from the Czech focus originated from south-eastern USA, particularly South Carolina. The Danube floodplain forests (third and still expanding focus) did not display relationship with any North American population; instead the Czech origin of the Danube population was indicated. A serial dilution of genetic diversity along the dispersion route across central and eastern Europe was observed. The results of microsatellite analyses were compared to previously acquired outputs from mitochondrial haplotype data and correlated with past human-directed translocations and natural migration of the final cervid hosts of F. magna.
The present study revealed a complex picture of the population genetic structure and
interrelationships of North American and European populations, global distribution and migratory routes of F. magna and an origin of European foci.
Trvalý link: http://hdl.handle.net/11104/0266580