Detection of a Novel Alphaherpesvirus and Avihepadnavirus in a Plantar Papilloma from a Rainbow Lorikeet (Trichoglosis moluccanus)

Detection of a Novel Alphaherpesvirus and Avihepadnavirus in a Plantar Papilloma from a Rainbow Lorikeet (Trichoglosis moluccanus)

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Cutaneous plantar papillomas are a relatively common lesion of wild psittacine birds in Australia.Next-generation sequencing technology was used to investigate the potential aetiologic agent(s) for a plantar cutaneous papilloma in a wild rainbow lorikeet (Trichoglosis moluccanus).In the DNA from this lesion, two novel viral sequences were detected.

The first was the partial sequence of a herpesvirus with the proposed name, psittacid alphaherpesvirus 6, from the Mardivirus genus of the family alphaherpesviruses.This represents the first mardivirus to be detected in a psittacine bird, elbeco adu ripstop pants the first mardivirus to be detected in a wild bird in Australia, and the second mardivirus to be found in a biopsy of an avian cutaneous papilloma.The second virus sequence was a complete sequence of a hepadnavirus, proposed as parrot hepatitis B genotype H (PHBV-H).

PHBV-H is the first hepadnavirus to be detected in a wild psittacine bird in Australia.Whether other similar viruses are circulating in wild birds in Australia and whether either of these viruses play a role poise pads in bulk in the development of the plantar papilloma will require testing of biopsies from similar lesions and normal skin from other wild psittacine birds.