Abstract
Three new monorchiid trematodes are reported from fishes of the families Nemipteridae and Pomacanthidae; two species are described from the southern Great Barrier Reef and the third from off Moorea, French Polynesia. Allobacciger polynesiensis sp. nov. is described from Centropyge flavissima (Cuvier), Allobacciger brevicirrus sp. nov. from Scolopsis bilineata (Bloch) and Scolopsis margaritifera (Cuvier), and Allobacciger annulatus sp. nov. from Centropyge tibicen (Cuvier), Centropyge vroliki (Bleeker) and Centropyge bicolor (Bloch). The three species most closely resemble the type-species, Allobacciger macrorchis Hafeezullah & Siddiqi, 1970, as well as Allobacciger centropygis Machida & Uchida, 2001, differing primarily in the morphology of the terminal genitalia and excretory vesicle. With the introduction of these new species, the most recent generic concept does not accurately reflect all species in the genus, and we provide a revised generic diagnosis to accommodate the new taxa. Complete ITS2 rDNA, partial 28S rDNA, partial 18S rDNA and partial cox1 mtDNA sequence data were generated for the three new species; all markers distinguish the three species reported here unambiguously. Phylogenetic analyses of the new sequence data show that the three new species of Allobacciger Hafeezullah & Siddiqi, 1970 form a well-supported clade.
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Data availability
The datasets generated during and/or analysed during the current study are available in GenBank repository, https://www.ncbi.nlm.nih.gov/nucleotide. GenBank accession numbers are listed in Table 1.
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Acknowledgements
We thank all members of the Marine Parasitology Laboratory for their assistance with the collection of fish and the staff of Heron Island Research Station and Lizard Island Research Station in Australia and CRIOBE Research Station in French Polynesia for their support of our work.
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This project was supported by The Holsworth Wildlife Research Endowment & The Ecological Society of Australia, The Joyce W. Vickery Research Fund administered by The Linnean Society of New South Wales, and the PADI Foundation through funds awarded to NW. NW is supported by a PhD scholarship from the University of Queensland (Research Training Program (RTP) Scholarship).
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PS collected samples in the field. NW and TC conceived the research. NW conducted morphological and molecular analyses. NW, SC and TC analysed the data. NW wrote the manuscript. All authors read and approved the manuscript
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The datasets generated during and/or analysed during the current study are available in GenBank repository, https://www.ncbi.nlm.nih.gov/nucleotide. GenBank accession numbers are listed in Table 1.
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Communicated by M. Curini-Galletti
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Wee, N.QX., Cutmore, S.C., Sasal, P. et al. Three new species of Allobacciger Hafeezullah & Siddiqi, 1970 (Digenea: Monorchiidae) from Australia and French Polynesia. Mar. Biodivers. 50, 16 (2020). https://doi.org/10.1007/s12526-019-01029-8
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DOI: https://doi.org/10.1007/s12526-019-01029-8