Fimbriarioides intermedia and F. lintoni (Cestoda: Hymenolepididae): molecular phylogeny, species status, and transmission in Arctic coastal ecosystems.

has a trans-Arctic distribution and is represented by the same population in all these regions. This is due to the high vagility of its definitive hosts, sea ducks, which make long-distance migrations along the coasts of the northern Palaearctic seas, and the almost circumpolar distribution of its intermediate hosts, barnacles.