Taxonomy of rock-wallabies, Petrogale (Marsupialia: Macropodidae). III. Molecular data confirms the species status of the purple-necked rock-wallaby (Petrogale purpureicollis Le Souef)

Mark D. B. Eldridge, Alex C. Wilson, Cushla J. Metcalfe, Anne E. Dollin, Jane M. Bell, Peter M. Johnson, Peter G. Johnston, Robert Close

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    31 Citations (Scopus)

    Abstract

    Mitochondrial DNA (mtDNA) analysis was undertaken to resolve the systematic uncertainties surrounding the morphologically distinct purple-necked rock-wallaby (P. lateralis purpureicollis) of north-west Queensland, Australia. A comparison of mtDNA sequence divergence using both whole mtDNA restriction site and control-region sequence analyses revealed that P. l. purpureicollis was as well differentiated from other P. lateralis (black-footed rock-wallaby) taxa as P. lateralis was from P. penicillata (brush-tailed rock-wallaby) or P. assimilis (allied rock-wallaby). Phylogenetic analysis of the sequence data suggests thatP. lateralis (sensu lato) is paraphyletic, with P. l. purpureicollis being more closely aligned to P. penicillataand P. assimilis than to P. lateralis (sensu stricto). Data are also presented that demonstrate significant differences in the distribution of the telomeric repeat sequence (TTAGGG)n between the chromosomes of P. l. purpureicollis and the karyotypically similar MacDonnell Ranges race of P. lateralis. In addition, meiosis appears to be severely disrupted in the majority (73%) of oocytes examined from two P. l. purpureicollis MacDonnell Ranges race hybrids. In light of these findings we recommend that the purple-necked rock-wallaby be reinstated as a full species, P. purpureicollis Le Souef 1924.
    Original languageEnglish
    Pages (from-to)323-343
    JournalAustralian Journal of Zoology
    Volume49
    Issue number4
    DOIs
    Publication statusPublished - 2001

    Keywords

    • Mitochondrial DNA
    • Petrogale purpureicollis Le Souef
    • Queensland, Northern
    • wallabies

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