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Lobocapillaria austropacifica n. g., n. sp. (Nematoda: Capillariidae) from the obtuse barracuda Sphyraena obtusata Cuvier (Sphyraenidae, Perciformes) off eastern Australia

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Abstract

Based on light and scanning electron microscopical studies, a new nematode parasite, Lobocapillaria austropacifica n. sp. (Capillariidae), is described from the gall-bladder of the marine fish (obtuse barracuda) Sphyraena obtusata Cuvier (Perciformes: Sphyraenidae) from off the eastern Pacific coast of Australia, for which a new genus Lobocapillaria n. g. is established. This new genus is mainly characterised by a single row of stichocytes, the presence of two large, conspicuously elongated lateral caudal lobes and a pair of subventral papillae at their base in males, a flat spicule distended laterally towards its proximal end and provided with superficial rough transverse grooves, a spicular canal and a very long, aspinose spicular sheath with a conspicuous expansion near its proximal end when evaginated. Capillaria sphyraeni Parukhin, 1971 is transferred to Lobocapillaria as L. sphyreni (Parukhin, 1971) n. comb. A key to capillariid genera containing species parasitic in fishes is provided.

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Acknowledgements

We wish to thank Drs Tom Cribb and Scott Cutmore (University of Queensland) for providing the facilities for parasite collection and Drs David M. Spratt and Shokoofeh Shamsi for sending specimens. The authors’ thanks are also due to the staff of the Laboratory of Electron Microscopy, Institute of Parasitology, Biology Centre of the CAS, České Budějovice, for their technical assistance, and to Ing Blanka Škoríková of the same Institute for help with the illustrations.

Funding

This project was supported financially by the Australian Biological Resources Study National Taxonomy Research Grant RF215-40. The study was also partly supported by the Czech Science Foundation (Grant. No. P505/12G112) and by institutional support (RVO:60077344, Institute of Parasitology, BC, CAS).

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Authors and Affiliations

  1. Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic

    František Moravec

  2. Faculty of Veterinary & Agricultural Sciences, The University of Melbourne, 250 Princes Highway Werribee, Melbourne, Victoria, 3030, Australia

    Ian Beveridge

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  1. František Moravec
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  2. Ian Beveridge
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Correspondence to František Moravec.

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The authors declare that they have no conflict of interest.

Ethical approval

All applicable institutional, national and international guidelines for the care and use of animals were followed (AEC approval number SBS/248/15/ABRS/ARC). Most fishes examined during this study were obtained from a commercial fishery; those not obtained from this source were collected under Queensland General Fisheries Permit 187264.

Additional information

This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as urn:lsid:zoobank.org:pub:177684F4-B7F8-404B-9098-4A21EBA11769. 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 Nematoda.

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Moravec, F., Beveridge, I. Lobocapillaria austropacifica n. g., n. sp. (Nematoda: Capillariidae) from the obtuse barracuda Sphyraena obtusata Cuvier (Sphyraenidae, Perciformes) off eastern Australia. Syst Parasitol 94, 547–556 (2017). https://doi.org/10.1007/s11230-017-9722-8

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  • DOI: https://doi.org/10.1007/s11230-017-9722-8

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