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?:abstract
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Bats are hosts to a large variety of viruses, including many capable of cross species transmissions to other mammals or humans. We characterized the virome in guano from five common bat species in 9 Northern California roosts and a pool of 5 individual bats. Genomes belonging to 14 viral families known to infect mammals and 17 viral families infecting insects or of unknown tropism were detected. Near or complete genomes of a novel parvovirus, astrovirus, nodavirus, CRESS-DNA viruses and densoviruses and more partial genomes of a novel alphacoronavirus, and bunyavirus were characterized. Lower numbers of reads with >90% amino acid identity to previously described calicivirus, circovirus, adenoviruses, hepatovirus, bocaparvoviruses, and polyomavirus in other bat species were also found likely reflecting their wide distribution among different bats. Unexpectedly a few sequence reads of canine parvovirus 2 and the recently described mouse kidney parvovirus were also detected and their presence confirmed by PCR possibly originating from guano contamination by carnivores and rodents. The majority of eukaryotic viral reads were highly divergent indicating that numerous viruses still remain to be characterized even from such a heavily investigated order as Chiroptera.IMPORTANCE Characterizing the bat virome is important for understanding viral diversity and detecting viral spillover between animal species. Using unbiased metagenomics method, we characterize the virome in guano collected from multiple roosts of common Northern California bat species. We describe several novel viral genomes and report the detection of viruses with close relatives reported in other bat species likely reflecting cross-species transmissions. Viral sequences from well-known carnivore and rodent parvoviruses were also detected whose presence are likely the result of contamination from defecation and urination atop guano and reflect the close interaction of these mammals in the wild.
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