Journal article
Genetic variation within species of the nematode genus Cloacina (Strongyloidea : Cloacininae) parasitic in the stomachs of rock wallabies, Petrogale spp. (Marsupialia : Macropodidae) in Queensland
Neil B Chilton, Florence Huby-Chilton, Peter M Johnson, Ian Beveridge, Robin B Gasser
AUSTRALIAN JOURNAL OF ZOOLOGY | CSIRO PUBLISHING | Published : 2009
DOI: 10.1071/ZO08068
Abstract
Four morphospecies of Cloacina, parasitic nematodes in the stomachs of rock wallabies (Petrogale spp.) from Queensland, were compared genetically using sequence data of the two internal transcribed spacers of nuclear ribosomal DNA (rDNA). The results suggest that two geographically isolated populations of C. ernabella from P. purpureicollis were genetically distinct. Based on the autapomorphic species concept, these two C. ernabella populations represented different species. For the three other nematode morphospecies, there were genetic differences among individuals of a morphospecies present in different species of host. The results suggest that each may represent a complex of sibling speci..
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Funding Acknowledgements
We thank Lesley Warner for assistance in obtaining material in the Rockhampton area. Part of the material collected was obtained under permit number C6/000184/01/SAA issued by the Queensland Department of Environment and Heritage. The Australian Research Council provided financial support for part of the project.