Ancipirhynchus afossalis n. g., n. sp. (Trypanorhyncha: Otobothriidae), from two species of sharks off Indonesian and Malaysian Borneo |
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Authors: | Schaeffner Bjoern C Gasser Robin B Beveridge Ian |
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Institution: | (1) Department of Veterinary Science, The University of Melbourne, 250 Princes Highway, Werribee, VIC, 3030, Australia |
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Abstract: | A new genus of trypanorhynch cestode is described from two species of sharks, the sliteye shark Loxodon macrorhinus Müller & Henle and the straight-tooth weasel shark Paragaleus tengi (Chen) collected in the Makassar Strait (off Indonesian Borneo) and Sulu Sea (off Malaysian Borneo). Ancipirhynchus
afossalis n. g., n. sp. possesses two bothria and a heteroacanthous, heteromorphous tentacular armature with three distinctive files
of hooks on the external tentacle surface but lacks prebulbar organs and gland cells within the tentacular bulbs. The hook
arrangement of alternating files on the external surface of the tentacle resembles that seen in the superfamily Otobothrioidea
Dollfus, 1942 in the genus Fossobothrium Beveridge & Campbell, 2005. However, the new species lacks the defining characteristic of this group, i.e. the paired bothrial
pits. A Bayesian inference (BI) analysis of 37 LSU sequences of trypanorhynchs from three superfamilies provided evidence
supporting the taxonomic placement of Ancipirhynchus
afossalis n. g., n. sp. within the Otobothrioidea. |
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