Genetic variation within species of the nematode genus Cloacina (Strongyloidea : Cloacininae) parasitic in the stomachs of rock wallabies, Petrogale spp. (Marsupialia : Macropodidae) in Queensland

摘要: Four morphospecies of Cloacina, parasitic nematodes in the stomachs rock wallabies (Petrogale spp.) from Queensland, were compared genetically using sequence data two internal transcribed spacers nuclear ribosomal DNA (rDNA). The results suggest that geographically isolated populations C. ernabella P. purpureicollis distinct. Based on autapomorphic species concept, these represented different species. For three other nematode morphospecies, there genetic differences among individuals a present host. each may represent complex sibling species, with wallaby examined for morphospecies. In caenis and pearsoni complexes, lineage western Queensland represents sister taxon to those pencillata east coast. robertsi complex, persephone purpureicollis. was found first time Winton central suggesting contact recent past between member penicillata complex.