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Gastrointestinal helminth parasites of the common wallaroo or euro, Osphranter robustus (Gould) (Marsupialia: Macropodidae) from Australia

Published online by Cambridge University Press:  13 January 2020

I. Beveridge Open the ORCID record for I. Beveridge [Opens in a new window]
I. Beveridge*
Affiliation:
Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia Honorary Associate, South Australian MuseumAdelaide, South Australia, Australia
*
Author for correspondence: I. Beveridge, E-mail: ibeve@unimelb.edu.au
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Abstract

The gastrointestinal helminth parasites of 170 common wallaroos or euros, Osphranter robustus (Gould), collected from all mainland states in which the species occurs as well as the Northern Territory, are presented, including previously published data. A total of 65 species of helminths were encountered, including four species of anoplocephalid cestodes found in the bile ducts and small intestine, and 61 species of strongylid nematodes, all but two of which occurring in the stomach, and with the remainder occurring in the terminal ileum, caecum and colon. Among the mainland subspecies of O. robustus, 52 species of helminths were encountered in O. r. robustus, compared with 30 species in O. r. woodwardi and 35 species in O. r. erubescens. Of the parasite species encountered, only 17 were specific to O. robustus, the remaining being shared with sympatric host species. Host-specific species or species occurring in O. robustus at a high prevalence can be classified as follows: widely distributed; restricted to northern Australia; restricted to the northern wallaroo, O. r. woodwardi; found only in the euro, O. r. erubescens; found essentially along the eastern coast of Australia, primarily in O. r. robustus; and species with highly limited regional distributions. The data currently available suggest that the acquisition of a significant number of parasites is due to co-grazing with other macropodids, while subspeciation in wallaroos as well as climatic variables may have influenced the diversification of the parasite fauna.

Keywords

HelminthsparasitesOsphranter robustuswallarooeuroMacropodidaeAustralia
Type
Research Paper
Information
Journal of Helminthology , Volume 94 , 2020 , e114
Copyright
Copyright © Cambridge University Press 2020

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