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Detection of Deltacoronavirus in Environmental Fecal Samples from Seabirds in the Saint Peter and Saint Paul Archipelago, central equatorial Atlantic Ocean

Gomes, F.; Correa, L.; da Silva, A. F.; Prado, T.; Bueno, M. G.; Appolinario, L.; Flores, P. S.; Resende, P. C.; Siqueira, M.; Brandao, M.; Reck, J.; Wallau, G. d. L.; Ogrzewalska, M.

2024-11-21 molecular biology
10.1101/2024.11.19.624433 bioRxiv
Show abstract

This study investigates the presence of avian coronaviruses (CoVs), influenza A viruses (IAVs), and Avian rotaviruses (RVs) group A in seabird populations inhabiting the Saint Peter and Saint Paul Archipelago (SPSPA), an isolated and remote oceanic island situated in the equatorial region of the Atlantic Ocean. In July 2022, 95 environmental fecal samples were collected from seabird colonies and screened for the viruses by quantitative one-step real-time RT-PCR (IAVs and RVs), by the conventional pancoronavirus RT-PCR protocols and metatranscriptomics of a positive sample. Four environmental feces samples tested positive for CoVs. Avian IAVs and RVs were not detected. Phylogenetic analysis revealed CoVs closely related to avian deltacoronaviruses previously identified in waterbirds from Asia and Australia. We could not recover the CoV by metatranscriptomics but we recovered a single viral contig of an avian enterovirus. The findings contribute valuable insights into virus dynamics among seabird populations, laying the groundwork for future investigations in this field.

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