Parasite phylogeographical congruence with salmon host evolutionarily significant units: implications for salmon conservation.

摘要: Comparative phylogeographical studies between parasites and their hosts or with biogeographical regions are useful to predict parasite dispersal potential over a broad geographical range. We used both microsatellite markers mtDNA sequence data from trematode parasite, Plagioporus shawi, test for congruence across two evolutionarily significant unit (ESU) boundaries of its salmonid (Oncorhynchus spp.). find congruent patterns the nuclear loci P. shawi ESU hosts. This pattern indicates that broad-scale can be predicted by history Furthermore, this provides independent support these as biologically relevant barriers. The shows some discordance level genetic differentiation greater than explained drift. Thus, cannot in isolation infer population shawi. at will salmon fisheries management providing tool assign ocean-migrating salmonids back freshwater origin.