Tetraphyllidean and onchoproteocephalidean cestodes of elasmobranchs from Moreton Bay, Australia: description of two new species and new records for seven described species
Parasitological examination of elasmobranchs of Moreton Bay, Queensland, Australia, resulted in the discovery of cestodes belonging to several armed genera of the Tetraphyllidea and Onchoproteocephalidea. Two new tetraphyllideans, Yorkeria moretonensis n. sp. and Yorkeria williamsi n. sp., are described from Chiloscyllium cf. punctatum (Hemiscylliidae). Yorkeria moretonensis n. sp. differs from its congeners in the possession of vitelline follicles that are discontinuous in the region of the ovary and in the length of its pedicels. Yorkeria williamsi n. sp. is most similar to Y. parva Southwell, 1927, but has larger, oval bothridia, longer pedicels and differences in the sizes of the scolex hooks. Yorkeria longstaffae Caira, Jensen & Rajan, 2007 is reported from Moreton Bay for the first time, and Spiniloculus mavensis Southwell, 1925 is re-reported from the type-locality and likely type-host (Moreton Bay and Chiloscyllium cf. punctatum, respectively), over 90 years after its original description. Six known onchoproteocephalideans, Acanthobothrium cannoni Campbell & Beveridge, 2002, A. chisholmae Campbell & Beveridge, 2002, A. ocallaghani Campbell & Beveridge, 2002, A. margieae Fyler, 2011, Megalonchos shawae Caira, Reyda & Mega, 2007 and M. sumansinghai Caira, Reyda & Mega, 2007, are reported from Moreton Bay for the first time, representing significant range extensions for all species.
We thank John Page, Dave Thompson and Joanna Stead for their assistance in the collection of elasmobranch specimens, Dr Susan Theiss for help in the production of SEM images, Dr Janine Caira for the image of the hologenophore of Y. izardi and Dr L. Chisholm for access to material in the South Australian Museum.
We acknowledge the Australian Biological Resources Study (ABRS) for their ongoing support. This study was funded by the ABRS National Taxonomy Research Grant RF215-40.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
All applicable institutional, national and international guidelines for the care and use of animals were followed.
- Beveridge, I., & Schaeffner, B. C. Trypanorhynch cestodes (Platyhelminthes) parasitic in elasmobranchs and crustaceans in Moreton Bay, Queensland. Memoirs of the Queensland Museum (In press).Google Scholar
- Caira, J. N., Jensen, K., & Barbeau, E. (2016). Global Cestode Database. World Wide Web electronic publication. www.tapewormdb.uconn.edu. Accessed April 25, 2018.
- Caira, J. N., Reyda, F. B., & Mega, J. D. (2007b). A revision of Megalonchos Baer & Euzet, 1962 (Tetraphyllidea: Onchobothriidae), with the description of two new species and transfer of two species to Biloculuncus Nasin, Caira & Euzet, 1997. Systematic Parasitology, 67, 211–223.CrossRefGoogle Scholar
- Cutmore, S. C., Bennett, M. B., & Cribb, T. H. (2010). A new tetraphyllidean genus and species, Caulopatera pagei n. g., n. sp. (Tetraphyllidea: Phyllobothriidae), from the grey carpetshark Chiloscyllium punctatum Müller & Henle (Orectolobiformes: Hemiscylliidae). Systematic Parasitology, 77, 13–21.CrossRefGoogle Scholar
- Cutmore, S. C., Bennett, M. B., Miller, T. L., & Cribb, T. H. (2017). Patterns of specificity and diversity in species of Paraorygmatobothrium Ruhnke, 1994 (Cestoda: Phyllobothriidae) in Moreton Bay, Queensland, Australia, with the description of four new species. Systematic Parasitology, 94, 941–970.CrossRefGoogle Scholar
- ICZN (2012). International Commission on Zoological Nomenclature: Amendment of articles 8, 9, 10, 21 and 78 of the International Code of Zoological Nomenclature to expand and refine methods of publication. Bulletin of Zoological Nomenclature, 69, 161–169.Google Scholar
- Last, P. R., & Stevens, J. D. (2009). Sharks and rays of Australia (2nd ed). Collingwood: CSIRO Publishing, 644 pp.Google Scholar
- Last, P. R., White, W. T., Carvalho, M. R., Séret, B., Stehmann, M. F. W., & Naylor, G. J. P. (2016). Rays of the world. Melbourne: CSIRO Publishing.Google Scholar
- Lockyer, A. E., Olson, P. D., & Littlewood, D. T. J. (2003). Utility of complete large and small subunit rRNA genes in resolving the phylogeny of the Neodermata (Platyhelminthes): implications and a review of the cercomer theory. Biological Journal of the Linnean Society, 78, 155–171.CrossRefGoogle Scholar
- Maddison, W. P., & Maddison, D. R. (2018). Mesquite: a modular system for evolutionary analysis. Version 3.01. http://mesquiteproject.org.
- Miller, M. A., Pfeiler, E., & Schwartz, T. (2010). Creating the CIPRES Science Gateway for inference of large phylogenetic trees. In: Proceedings of the gateway computing environments workshop (GCE), 14 Nov. 2010, New Orleans, LA, USA, pp. 1–8.Google Scholar
- Naylor, G. J. P., Caira, J. N., Jensen, K., Rosana, K. A. M., White, W. T., & Last, P. R. (2012). A DNA sequence-based approach to the identification of shark and ray species and its implications for global elasmobranch diversity and parasitology. Bulletin of the American Museum of Natural History, 367, 1–262.CrossRefGoogle Scholar
- Southwell, T. (1925). A monograph on the Tetraphyllidea with notes on related cestodes. Memoirs of the Liverpool School of Tropical Medicine (New Series), 2, 1–368.Google Scholar
- Waeschenbach, A., Webster, B. L., Bray, R. A., & Littlewood, D. T. J. (2007). Added resolution among ordinal level relationships of tapeworms (Platyhelminthes: Cestoda) with complete small and large subunit nuclear ribosomal RNA genes. Molecular Phylogenetics and Evolution, 45, 311–325.CrossRefGoogle Scholar