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Journal article
A new microbothriid monogenean Dermopristis pterophilus n. sp. from the skin of the Critically Endangered green sawfish Pristis zijsron Bleeker, 1851 (Batoidea: Pristidae) in Western Australia
International Journal for Parasitology: Parasites and Wildlife, Vol.17, pp.185-193
2022
Abstract
A new microbothriid monogenean Dermopristis pterophilus n. sp. is described from the skin of the Critically Endangered green sawfish Pristis zijsron Bleeker, 1851 in the Ashburton River delta, northern Western Australia. Analyses of the 28S ribosomal DNA marker and the molecular barcoding markers Histone 3 and Elongation Factor 1 α confirmed position among the Microbothriidae, with close affinity to the only other sequenced representative of Dermopristis Kearn, Whittington and Evans-Groing, 2010. The new species is morphologically consistent with the concept of Dermopristis; it has two testes, lacks a male copulatory organ and has a simple haptor. It is smaller than its two congeners D. paradoxus Kearn, Whittington and Evans-Gowing, 2010 and D. cairae Whittington and Kearn, 2011 and is most similar to the former, distinguished only in that it lacks the strong, transverse, parallel ridges on the ventral body surface that characterise that species. It is more easily distinguished from D. cairae, differing in body shape, possession of a seminal receptacle, and relative position and size of the haptor. It may further differ from both species by fine details of the gut diverticula, although these details are difficult to ascertain. Spermatophores were observed in the new species, similar to those previously reported for D. cairae. The new species exhibits site attachment preference: infections were greatest on and immediately adjacent to the host pelvic fins (including male reproductive organs, i.e. claspers), moderate in proximity to the dorsal and pectoral fins, few on the caudal fin and peduncle, and infrequently, isolated worms occurred elsewhere on the dorsal and ventral surfaces of the body. There was no incidence of infection on the head (including rostrum). We presume D. pterophilus is restricted to P. zijsron and thus likely faces the same threat of extinction.
Details
- Title
- A new microbothriid monogenean Dermopristis pterophilus n. sp. from the skin of the Critically Endangered green sawfish Pristis zijsron Bleeker, 1851 (Batoidea: Pristidae) in Western Australia
- Authors/Creators
- J. Ingelbrecht (Author/Creator)D.L. Morgan (Author/Creator)K.O. Lear (Author/Creator)T. Fazeldean (Author/Creator)A.J. Lymbery (Author/Creator)B.M. Norman (Author/Creator)S.B. Martin (Author/Creator)
- Publication Details
- International Journal for Parasitology: Parasites and Wildlife, Vol.17, pp.185-193
- Publisher
- Elsevier Limited
- Identifiers
- 991005541268207891
- Copyright
- © 2022 The Authors.
- Murdoch Affiliation
- Harry Butler Institute; School of Environmental and Conservation Sciences; Centre for Sustainable Aquatic Ecosystems
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 1 Clinical & Life Sciences
- 1.163 Parasitology - General
- 1.163.645 Fish Parasitology
- Web Of Science research areas
- Ecology
- Parasitology
- ESI research areas
- Plant & Animal Science