Phylogenetic Relationships within the Nematode Subfamily Phascolostrongylinae (Nematoda: Strongyloidea) from Australian Macropodid and Vombatid Marsupials.
AuthorSukee, T; Beveridge, I; Sabir, AJ; Jabbar, A
University of Melbourne Author/sJabbar, Abdul
Document TypeJournal Article
CitationsSukee, T., Beveridge, I., Sabir, A. J. & Jabbar, A. (2021). Phylogenetic Relationships within the Nematode Subfamily Phascolostrongylinae (Nematoda: Strongyloidea) from Australian Macropodid and Vombatid Marsupials.. Microorganisms, 9 (1), https://doi.org/10.3390/microorganisms9010009.
Access StatusOpen Access
The strongyloid nematode subfamily Phascolostrongylinae comprises parasites of the large intestine and stomach of Australian macropods and wombats. In this study, we tested the phylogenetic relationships among the genera of the Phascolostrongylinae using the first and second internal transcribed spacers of the nuclear ribosomal DNA. Monophyly was encountered in the tribe Phascolostrongylinea comprising two genera, Phascolostrongylus and Oesophagostomoides, found exclusively in the large intestine of wombats. The tribe Hypodontinea, represented by the genera Hypodontus and Macropicola from the ileum and large intestine of macropods, was also found to be monophyletic. The tribe Macropostrongyloidinea, comprising the genera Macropostrongyloides and Paramacropostrongylus, was paraphyletic with the species occurring in the stomach grouping separately from those found in the large intestines of their hosts. However, Macropostrongyloidesdissimilis from the stomach of the swamp wallaby and Paramacropostrongylus toraliformis from the large intestine of the eastern grey kangaroo were distinct from their respective congeners. This study provided strong support for the generic composition of the tribe Phascolostrongylinea. The unexpected finding of M. dissimilis and P. toraliformis being distantly related to their respective congeners suggests a requirement for future taxonomic revision that may warrant separation of these species at the generic level.
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