Molecular characterisation and updated description of Neoechinorhynchus aldrichettae Edmonds, 1971 (Acanthocephala: Neoechinorhynchidae), based on material from Aldrichetta forsteri (Valenciennes) collected in Tasmania, Australia

We report on Neoechinorhynchus aldrichettae Edmonds, 1971 (Acanthocephala: Neoechinorhynchidae), obtained from yellow-eye mullet Aldrichetta forsteri (Valenciennes) (Mugiliformes: Mugilidae) from the Huon River, Tasmania, Australia. We provide new 18S and 28S rDNA gene sequence data for N . aldriche...

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Bibliographic Details
Published in:Systematic parasitology 2022-04, Vol.99 (2), p.241-251
Main Authors: Huston, Daniel C., Cutmore, Scott C., Smales, Lesley R.
Format: Article
Language:English
Subjects:
Acanthocephala
Agriculture
Aldrichetta forsteri
Animal Anatomy
Animal Ecology
Animal Systematics/Taxonomy/Biogeography
Biomedical and Life Sciences
Fertilization
Histology
Life Sciences
Morphology
Neoechinorhynchidae
Neoechinorhynchus
Neoechinorhynchus aldrichettae
Phylogenetics
Phylogeny
Proboscis
Species
Zoology
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Summary:We report on Neoechinorhynchus aldrichettae Edmonds, 1971 (Acanthocephala: Neoechinorhynchidae), obtained from yellow-eye mullet Aldrichetta forsteri (Valenciennes) (Mugiliformes: Mugilidae) from the Huon River, Tasmania, Australia. We provide new 18S and 28S rDNA gene sequence data for N . aldrichettae , assess its phylogenetic position relative to other species of Neoechinorhynchus and provide an updated morphological account of this species including detail of features omitted in the type-description, specifically of the apical organ, a collar at the base of the neck and a para-receptacle structure associated with the proboscis receptacle. We determine that eggs in this species are ovoid, without polar prolongations of fertilisation membrane, which permits assignment of N . aldrichettae to the subgenus Neoechinorhynchus . Our phylogenetic analyses place N . (N .) aldrichettae in a clade with other species of Neoechinorhynchus which parasitise mullets in marine and estuarine waters. We find that, in terms of monophyletic clades, the current subgeneric classification system for Neoechinorhynchus is not reflected in our phylogenetic analyses.
ISSN:0165-5752
1573-5192
DOI:10.1007/s11230-022-10023-x