The gastrointestinal nematodes of Varanus rosenbergi (Reptilia: Varanidae) and the effects of habitat change in southern Australia, with particular reference to the genus Abbreviata (Physalopteroidea)

Hugh Jones

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    Abstract

    Nine species of nematode were collected from the stomachs of 56Varanus rosenbergi from southern Australia, viz. Abbreviata anomala, A.antarctica, A. confusa, A. hastaspicula, A. levicauda, A. tumidocapitis,Pseudorictularia disparilis, Maxvachonia chabaudi, and Ophidascaris pyrrhus. A.antarctica occurred in 93% of lizards. Sixty-two percent of lizards wereinfected with this species only, and 30% had concurrent infections with fromtwo to five species of Abbreviata. A. levicauda and A. hastaspicula were presentat low prevalence in the drier and hotter parts of this host's range. Intensityof infection with Abbreviata nematodes ranged to more than 400 adults, andmore than 600 Abbreviata spp. larvae. Highest intensity of infection with A.antarctica in Western Australia was east of the agricultural areas, and in orclose to reserves where the ecosystem was less disturbed. The high prevalenceof nematodes in this genus across a wide range of habitat and climate typessuggests a prevalent arthropod intermediate host, or a wide range of speciesof arthropod, which are susceptible to infection.
    Original languageEnglish
    Pages (from-to)259-263
    JournalRecords of the Western Australian Museum
    Volume22
    Publication statusPublished - 2005

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