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A review of the nematode assemblage of the Australian bandicoot, Isoodon macrourus (Peramelidae), from material held in the South Australian Museum with the description of Sprattellus cassonei n. sp. (Mackerrastrongylidae)

Published online by Cambridge University Press:  19 October 2023

L.R. Smales Open the ORCID record for L.R. Smales [Opens in a new window] ,
J.A.L. Wood  and
L.A. Chisholm Open the ORCID record for L.A. Chisholm [Opens in a new window]
L.R. Smales*
Affiliation:
Parasitology Section, South Australian Museum, North Terrace, Adelaide 5000 South Australia, Australia
J.A.L. Wood
Affiliation:
Parasitology Section, South Australian Museum, North Terrace, Adelaide 5000 South Australia, Australia
L.A. Chisholm
Affiliation:
Parasitology Section, South Australian Museum, North Terrace, Adelaide 5000 South Australia, Australia Ecology and Evolutionary Biology, School of Biological Sciences, University of Adelaide, North Terrace, Adelaide, South Australia 5001, Australia
*
Corresponding author: L.R. Smales; Email: l.warner@cqu.edu.au
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Abstract

A total of 235 vials of nematodes held in the Australian Helminthological Collection of the South Australian Museum from 125 individuals of Isoodon macrourus were examined. The nematode assemblage of I. macrourus, comprising 12 families, including 16 genera and 23 identified species, was compared with the sympatric bandicoot species Perameles nasuta, 20 identified species (Sorensen’s index of similarity 0.56) and P. pallescens, 12 identified species (Sorensen’s index 0.51). Sprattellus cassonei n. sp. is distinguished from its congeners by having a synlophe with 7–8 ridges with the anterior ventral ridges interrupted, the morphology of the dorsal ray and the branching of the spicule tips. A single male specimen identified as Linstowinema sp. 1. is characterised by seven circles of body hooks, the oesophagus terminating at the level of the seventh circle and robust scale-like spines on the posterior ventral body. A complete description of the species will require additional material, including females. Difficulties in identifying individuals of the genus Mackerrastrongylus to species level are discussed. Overall similarities in the nematode assemblages of the three bandicoot hosts are likely due to shared relationships and similar behaviours.

Keywords

Northern brown bandicootPapua New GuineaAustraliahelminth assemblagesSprattellus cassonei n. sp
Type
Research Paper
Information
Journal of Helminthology , Volume 97 , 2023 , e79
Copyright
© The Author(s), 2023. Published by Cambridge University Press

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