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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Acknowledgements
We wish to thank Janine N. Caira (University of Connecticut) and Kirsten Jensen (University of Kansas) for making this material available for study. We are also grateful to Bronwyn Campbell, Neil Young, Matt Nolan, Abdul Jabbar and Florian Roeber (all from the University of Melbourne) for offering technical assistance and valuable advice for the molecular study. We are also grateful to Joan Clark (Monash University) for excellent technical assistance in taking SEM micrographs. Collecting was funded by National Science Foundation (NSF) PBI award Nos DEB 0818696 and DEB 0818823, and NSF BS&I award Nos DEB 011882, DEB 0542846 and DEB 0542941. Collections were undertaken under permit number UPE:40/200/19SJ.924 issued by the Economic Planning unit in Kuala Lumpur (for collections in Sarawak) and research agreement No. SBC-RA-0050-JNC from the Sarawak Biodiversity Center in Kuching.
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Schaeffner, B.C., Gasser, R.B. & Beveridge, I. Ancipirhynchus afossalis n. g., n. sp. (Trypanorhyncha: Otobothriidae), from two species of sharks off Indonesian and Malaysian Borneo. Syst Parasitol 80, 1–15 (2011). https://doi.org/10.1007/s11230-011-9309-8
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DOI: https://doi.org/10.1007/s11230-011-9309-8