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Four new species of Paradiscogaster Yamaguti, 1934 (Digenea: Faustulidae) from batfishes (Perciformes: Ephippidae) on the Great Barrier Reef, Australia

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Abstract

Examination of three species of batfishes (Teleostei: Epphippidae) from off Lizard and Heron Islands on the Great Barrier Reef led to the discovery of specimens of the trematode genus Paradiscogaster Yamaguti, 1934 (Digenea: Faustulidae). Morphological analysis demonstrated that the new specimens represented four morphotypes which we interpret to be new species: Paradiscogaster martini n. sp., P. vichovae n. sp. and P. brayi n. sp. from Platax orbicularis (Forsskål) and P. pinnatus (Linnaeus) off Lizard Island, and P. nitschkei n. sp. from P. teira (Forsskål) off Heron Island. Published material was re-examined and the specimens identified as P. chaetodontis okinawensis Yamaguti, 1971 from P. pinnatus from Okinawa, Japan, actually represent the new species P. brayi n. sp., demonstrating that some species of Paradiscogaster have wide geographical distributions. ITS2 rDNA data for the four morphotypes differ by 4–39 base pairs confirming the delineation of the four species proposed. A feature of this study is the recognition of Platax spp. as an important host group for Paradiscogaster, with the new species placing them as the second richest host group for these parasites after the Chaetodontidae.

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Acknowledgements

PED thanks Becas Chile of Comisión Nacional de Ciencia y Tecnología Chile for granting a PhD scholarship.

Funding

This work was supported by the Australian Research Council and the Australian Biological Resources Study funding to Cribb. We thank Storm Martin and Drs Rob Adlard and Rodney Bray for assistance with collection and dissection of fishes. We appreciate the support of staff of the Lizard Island and Heron Island Research Stations.

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Authors and Affiliations

  1. School of Biological Sciences, The University of Queensland, Brisbane, OLD, 4072, Australia

    Pablo E. Diaz, Scott C. Cutmore & Thomas H. Cribb

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  1. Pablo E. Diaz
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  2. Scott C. Cutmore
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  3. Thomas H. Cribb
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Correspondence to Pablo E. Diaz.

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All applicable institutional, national and international guidelines for the care and use of animals were followed. All procedures performed in studies involving animals were in accordance with the ethical standards of the institution or practice at which the studies were conducted. The Animal Ethics Approval Certificate (AEC) number for this study was SBS/248/15/ABRS/ARC.

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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as 60F11829-65EE-47CA-98EE-005D646B021E. This article was published as an Online First article on the online publication date shown on this page. The article should be cited by using the doi number. This is the Version of Record.

This article is part of the Topical Collection Digenea.

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Diaz, P.E., Cutmore, S.C. & Cribb, T.H. Four new species of Paradiscogaster Yamaguti, 1934 (Digenea: Faustulidae) from batfishes (Perciformes: Ephippidae) on the Great Barrier Reef, Australia. Syst Parasitol 94, 339–349 (2017). https://doi.org/10.1007/s11230-017-9709-5

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