A new species of Mesonivirus from the Northern Territory, Australia

D. Warrilow, D. Watterson, R.A. Hall, S.S. Davis, R.P. Weir, N. Kurucz, P.I. Whelan, Richard Allcock, S. Hall-Mendelin, C.A. O'Brien, J.M. Hobson-Peters

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    36 Citations (Scopus)

    Abstract

    Here we describe Casuarina virus (CASV), a new virus in the family Mesoniviridae. This is the first report of a mesonivirus in Australia, which extends the geographical range of this virus family to 3 continents. The virus was isolated in 2010 from Coquillettidia xanthogaster mosquitoes during surveillance in the suburbs of Darwin, the capital of the Northern Territory. Cryo-electron microscopy of the CASV virions revealed spherical particles of 65 nm in size with large club-shaped projections of approximately 15 nm in length. The new virus was most closely related to Alphamesonivirus 1, the only currently recognized species in the family. In 2013 a further 5 putative new mesonivirus species were described: Hana, Méno, Nsé, Moumo and Dak Nong viruses. The evolutionary distance between CASV and two of its closest relatives, Cavally and Hana viruses (Jones-Taylor-Thornton distance of 0.151 and 0.224, respectively), along with its isolation from a different genus of mosquitoes captured on a separate continent indicate that CASV is a new species. © 2014 Warrilow et al.
    Original languageEnglish
    Pages (from-to)e91103
    JournalPLoS One
    Volume9
    Issue number3
    DOIs
    Publication statusPublished - 26 Mar 2014

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