Bats provide important ecosystem services as pollinators, seed dispersers, and/or insect controllers, but they have also been found harboring different viruses with zoonotic potential. Virome studies in bats distributed in Asia, Africa, Europe, and North America have increased dramatically over the past decade, whereas information on viruses infecting South American species is scarce. We explored the virome of Tadarida brasiliensis, an insectivorous New World bat species inhabiting a maternity colony in Rosario (Argentina), by a metagenomic approach. The analysis of five pooled oral/anal swab samples indicated the presence of 43 different taxonomic viral families infecting a wide range of hosts. By conventional nucleic acid detection techniques and/or bioinformatics approaches, the genomes of two novel viruses were completely covered clustering into the Papillomaviridae (Tadarida brasiliensis papillomavirus type 1, TbraPV1) and Genomoviridae (Tadarida brasiliensis gemykibivirus 1, TbGkyV1) families. TbraPV1 is the first papillomavirus type identified in this host and the prototype of a novel genus. TbGkyV1 is the first genomovirus reported in New World bats and constitutes a new species within the genus Gemykibivirus. Our findings extend the knowledge about oral/anal viromes of a South American bat species and contribute to understand the evolution and genetic diversity of the novel characterized viruses.
Fourteen species of bats in the genus Molossus currently are recognized in the Neotropical region; only three are known from Argentina. Here, we describe a new species based on specimens collected in the province of Santa Fe, Argentina, in the Pampa ecoregion. The new species can be distinguished from its congeners by its general strong orange coloration, forearm length > 41 mm, dorsal hairs bicolor and long (~5 mm), infraorbital foramen laterally oriented, and long and forward-projected (pincer-like) upper incisors. The external and cranial morphology of the new species are described and comparisons made with other species of similar size and with those present in its distributional area. Wilcoxon tests and multivariate analyses (nonmetric multidimensional scaling ordination and PERMANOVA) were carried out to determine the morphometric differences between the new species and other seven species of Molossus. The species tree, estimated by *BEAST from the concatenation of mitochondrial and nuclear genes, suggests that Molossus sp. nov. is basal within the clade formed by {{M. aztecus, M. rufus}, {{M. currentium, M. pretiosus}, M. sinaloae}} with a posterior probability of 0.82.
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