COMMON EURASIAN FISH TAPEWORM, CARYOPHYLLAEIDES FENNICA (CESTODA), IN WESTERN NORTH AMERICA: FURTHER EVIDENCE OF 'AMPHI-PACIFIC' VICARIANCE IN FRESHWATER FISH PARASITES

0482944 - BC 2018 RIV US eng J - Journal Article
Oros, M. - Choudhury, A. - Scholz, Tomáš
COMMON EURASIAN FISH TAPEWORM, CARYOPHYLLAEIDES FENNICA (CESTODA), IN WESTERN NORTH AMERICA: FURTHER EVIDENCE OF 'AMPHI-PACIFIC' VICARIANCE IN FRESHWATER FISH PARASITES.
Journal of Parasitology. Roč. 103, č. 5 (2017), s. 486-496. ISSN 0022-3395. E-ISSN 1937-2345
R&D Projects: GA ČR(CZ) GBP505/12/G112
Institutional support: RVO:60077344
Keywords : phylogenetic-relationships * palearctic region * platyhelminthes * identification * biogeography * oligochaeta * morphology * sequences * patterns
OECD category: Zoology
Impact factor: 1.395, year: 2017

The freshwater fish faunas of the Palaearctic and Nearctic regions show similarities but also notable differences, resulting in diverse distributions of their parasites. Relatively few parasite species occur in both regions and fewer still have been examined using molecular data. We report a rare example of 'amphi-Pacific' distribution, involving the common Palaearctic parasite, the caryophyllidean cestode Caryophyllaeides fennica (Schneider, 1902), in the chiselmouth Acrocheilus alutaceus Agassiz and Pickering, 1855, an endemic cyprinid in northwestern Nearctic, Oregon. Available information on nonnative fish species in Oregon suggests that the parasite is native to the area and not introduced. Molecular data (18S ribosomal [r] DNA, 28S rDNA, internal transcribed spacer 2, and cytochrome c oxidase subunit 1 gene) indicate very little genetic divergence between representatives from the Palaearctic and Nearctic, and possibly a relatively more recent colonization of the Nearctic region by this cestode via the Beringian land bridge. This is remarkable considering that Acrocheilus has reportedly been in Oregon since the Miocene.
Permanent Link: http://hdl.handle.net/11104/0278325