Eighty-two Pasteurellaceae isolates from marsupials characterized by phylogenetic analysis of rpoB gene sequences formed five distinct groups. Twenty-one strains from long-nosed potoroos ( Potorous tridactylus apicalis), spotted-tailed quolls ( Dasyurus maculatus), and eastern quolls ( Dasyurus viverrinus) made up group 1, which classified with Frederiksenia canicola. Group 2, 15 strains from Tasmanian devils ( Sarcophilus harrisii), common wombats ( Vombatus ursinus), common ring-tailed possums ( Pseudocheirus peregrinus), and eastern quolls, grouped with Pasteurella multocida. Three strains from koalas ( Phascolarctos cinereus) formed group 3 and clustered with Lonepinella koalarum. Group 4, 13 common wombat strains only distantly related to other Pasteurellaceae, probably represent a new genus. Finally, 29 strains from Tasmanian devils, spotted-tailed quolls and eastern quolls formed group 5 and clustered with 15 previously described Tasmanian devil strains, belonging to a yet unnamed Pasteurellaceae taxon. The results strongly indicate that Pasteurellaceae bacteria represent a part of the normal oral microbiota in marsupials.

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http://dx.doi.org/10.1638/2017-0071.1DOI Listing

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Article Synopsis
  • - The eastern quoll, an endangered marsupial from Australia, has lost its mainland populations and now only exists on two islands, leading to efforts for captive breeding and re-establishment on the mainland.
  • - Researchers created a high-quality reference genome for the eastern quoll, aiding in genetic management and providing insight into its demographic history, which shows signs of long-term decline starting in the late Pleistocene.
  • - The study also discovered a genetic deletion at the ASIP locus that may explain the color differences in fur between the eastern quoll and the closely related Tasmanian devil.
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