Anophryocephalus inuitorum sp. nov. and A. arcticensis sp. nov. (Eucestoda: Tetrabothriidae) in Ringed Seals ( Phoca hispida hispida ) and Harp Seals ( Phoca groenlandica ) from High-Latitude Seas of Eastern Canada and the Arctic Basin

• Main Authors: Hoberg, Eric P., Measures, Lena N.
• Format: Text
• Language: unknown
• Published: DigitalCommons@University of Nebraska - Lincoln 1995
• Subjects: Biodiversity; Ecology and Evolutionary Biology; Marine Biology; Parasitology; Zoology; Arctic; Canada; Phoques; Arctic Basin; Groenland; Phoca groenlandica; Phoca hispida
• Online Access: https://digitalcommons.unl.edu/parasitologyfacpubs/788; https://digitalcommons.unl.edu/context/parasitologyfacpubs/article/1799/viewcontent/Hoberg_Measures_Anoph_inuitorum_Can_J_Zool_1995.pdf

Anophryocephalus inuitorum sp. nov. and A. arcticensis sp. nov. are described from ringed seals (Phoca hispida hispida) in the eastern Canadian Arctic; the latter species is also reported from harp seals (Phoca groenlandica) in the Gulf of St. Lawrence. Anophryocephalus inuitorum is most similar to A. skrjabini, but can be distinguished by fewer testes (14-27) and smaller dimensions of the strobila, neck (3.0-5.9 mm long), and cirrus sac (31-70 μm long), diameter of the genital atrium (44 -68 pm), and length of the male canal (23-42 μm long). Anophyrocephulus arcticensis resembles A. nunivakensis in the structure of the scolex, but is readily distinguished by a longer neck (8.9-14.7 mm), an elongate cirrus sac (60-98 x 44-73 μm) with a substantially thicker muscular wall, a more globular vitelline gland, and larger embryophores (29-41 μm long) and oncospheres (24-34 μm long). These are the first species of Anophryocephalus to be described from phocines in the eastern Canadian Arctic, and are included in a revised key for the genus. French abstract: On trouvera ici la description d’Anophryocephalus inuitorum sp. nov. et d’A. arcticensis sp. nov., rencontrés chez des Phoques annelés (Phoca hispida hispida) dans l’est de l’Arctique canadien; la seconde espèce a également été trouvée chez des Phoques du Groenland (Phoca groenlandica) dans le golfe du Saint-Laurent. Anophryocephalus inuitorum s’apparente surtout à A. skrjabini, mais s’en distingue par le nombre plus restreint de ses testicules (14-27) et les dimensions plus réduites des composantes de son strobila, cou (3,0-5,9 mm longueur), sac du cirre (31-70 μm), atrium génital (44-68 μm de diamètre), canal mâle (23-42 μm de longueur). Anophyocephulus articensis ressemble à A. nunivakensis par la structure de son scolex, mais s’en distingue facilement par un cou plus long (8,9-14,7 mm de longueur), par son sac du cirre allongé (60-98 x 44-73 μm) à la paroi musculaire beaucoup plus épaisse, par sa glande vitelline plus globuleuse et par la taille plus importante de ...