Alcataenia campylacantha (Krabbe, 1869) from pigeon guillemots, Cepphus columba Pallas, and black guillemots, Cepphus grylle (Linnaeus), and Alcataenia sp. indet. (Cestoda: Dilepididae) from Kittlitz's murrelets, Brachyramphus brevirostris (Vigors) in Alaska

Abstract

Alcataenia campylacantha (Krabbe, 1869) is redescribed and reported for the first time from pigeon guillemots, Cepphus columba Pallas, in Alaska. Specimens of this cestode were also found in black guillemots, Cepphus grylle (Linnaeus) at Point Barrow, Alaska. There were no substantial differences in morphological characters between populations of this cestode from the North Atlantic and North Pacific basins. Additionally, Alcataenia sp. indet. is reported, with a partial description, from Kittlitz's murrelets, Brachyramphus brevirostris (Vigors), in Alaska. This constitutes the first record of dilepidid cestodes from birds of the genus Brachyramphus Brandt.