Psittacine Beak and Feather Syndrome in a Blue-Fronted Amazon (Amazona aestiva)

Huff, David G.; Schmidt, Robert E.; Fudge, Alan M.

doi:10.2307/30134406

Cited by 9 publications

(4 citation statements)

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“…The chronic form of PBFD is more prevalent in older psittacine birds where symptoms begin with depression, diarrhea, lethargy, and feather deformities. Feather deformities include constricted or necrotic feather shafts, curled or clubbed feathers, hemorrhage into the feather shaft and retained feather sheaths [17][18][19][20][21]. In severe cases of PBFD, especially in cockatoos, beak and claw deformities can occur [11,17,20].…”

Section: Introductionmentioning

confidence: 99%

Identification of a Novel Adélie Penguin Circovirus at Cape Crozier (Ross Island, Antarctica)

Morandini

Dugger

Ballard

et al. 2019

Viruses

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Understanding the causes of disease in Antarctic wildlife is crucial, as many of these species are already threatened by environmental changes brought about by climate change. In recent years, Antarctic penguins have been showing signs of an unknown pathology: a feather disorder characterised by missing feathers, resulting in exposed skin. During the 2018–2019 austral summer breeding season at Cape Crozier colony on Ross Island, Antarctica, we observed for the first time an Adélie penguin chick missing down over most of its body. A guano sample was collected from the nest of the featherless chick, and using high-throughput sequencing, we identified a novel circovirus. Using abutting primers, we amplified the full genome, which we cloned and Sanger-sequenced to determine the complete genome of the circovirus. The Adélie penguin guano-associated circovirus genome shares <67% genome-wide nucleotide identity with other circoviruses, representing a new species of circovirus; therefore, we named it penguin circovirus (PenCV). Using the same primer pair, we screened 25 previously collected cloacal swabs taken at Cape Crozier from known-age adult Adélie penguins during the 2014–2015 season, displaying no clinical signs of feather-loss disorder. Three of the 25 samples (12%) were positive for a PenCV, whose genome shared >99% pairwise identity with the one identified in 2018–2019. This is the first report of a circovirus associated with a penguin species. This circovirus could be an etiological agent of the feather-loss disorder in Antarctic penguins.

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Section: Introductionmentioning

confidence: 99%

Identification of a Novel Adélie Penguin Circovirus at Cape Crozier (Ross Island, Antarctica)

Morandini

Dugger

Ballard

et al. 2019

Viruses

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“…BFDV causes beak and feather disease in parrots, the symptoms of which include depression, lethargy, diarrhea, and feather loss ( 3 – 7 ). BFDV can be spread through viral particles shedding in feather dust, crop secretions, and feces.…”

Section: Genome Announcementmentioning

confidence: 99%

Genome Sequences of Beak and Feather Disease Virus in Urban Rainbow Lorikeets (Trichoglossus haematodus)

Collings

Collings²,

Julian

et al. 2015

Genome Announc

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Beak and feather disease viral genomes were recovered from two deceased juvenile urban rainbow lorikeets (Trichoglossus haematodus) that lacked tail feathers. These genomes share ~95% pairwise identity with two beak and feather disease virus (BFDV) genomes identified in wild and captive Australian T. haematodus birds and ~92% identity to those in wild New Caledonian T. haematodus deplanchii birds.

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“…1). Previous descriptions in Amazona aestiva (Huff et al, 1988) and Ara ararauna (Piçarra, 2009) were documented. New World psittacines (Amazona sp., Ara sp.)…”

Section: Molecular Diagnosis Of Beak and Feather Disease In Native Brmentioning

confidence: 99%

Molecular Diagnosis of Beak and Feather Disease in Native Brazilian Psittacines

Araújo

Andery

Ferreira

et al. 2015

Rev. Bras. Cienc. Avic.

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The incidence of the psittacine beak and feather disease virus (BFDV) was investigated in Brazilian native parrots with normal feathering arriving at rescue and triage centers for wild animals (CETAS, IBAMA) in the state of Minas Gerais, Brazil. BFDV DNA was investigated by previously described PCR technique for the partial amplification of BFDV ORF-1 in DNA extracts from blood, cloacal swab or liver of psittacines. Some birds provided more than one sample. Nine species of psittacines were sampled between January 2009 and October 2010. Blood (n=46) or cloacal swab (n=128) samples were obtained from psittacines immediately upon arrival at the triage centers. Liver samples were collected from necropsied birds dead on arrival (n=167). All swab samples were negative, except for one Ara ararauna individual (n=3) which blood presented the BFDV DNA. On the other hand, 11 liver samples were positive for BFDV DNA, with a prevalence of 7.8% in Amazona aestiva (n=140). No BFDV DNA was detected in the liver of Amazona amazonica (n=11), A. vinacea (n=5), A. rhodochorytha (n=4), Anodorhynchus hyacinthinus (n=3), Ara ararauna, (n=3), Aratinga leucophtalma (n=2), Guarouba guarouba (n=1) and Pionus maximiliani (n=1). In most cases, alopecia was not associated with BFDV detection in liver, and liver histopathology was inconclusive. Although all cloacal swab samples were negative, a few psittacines (n=19) that died at CETAS-Belo Horizonte were retested, and 21% were detected as positive in liver. A group of psittacines (n=16) was clinically evaluated, and despite showing feather dystrophy, all birds were negative in the cloacal swabs, except for one, which blood sample was positive (A. ararauna). The obtained sequences of the BFDV strains BH 215 and BH 732 were deposited in the GenBank (JQ649409 and JQ649410). A 98% similarity with strain sequences described in Australia, Japan, and New Zealand was observed. It is possible that these strains arrived in Brazil through the legal and illegal trade of parrots. However, it was not possible to associate BFDV infection with the geographical origin of birds and no local marker was detected. The rates of detection, although similar to other studies, indicate the tendency of a high incidence of the disease, possibly associated with stress, and high bird density and wide transmission in captivity conditions.

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Psittacine Beak and Feather Syndrome in a Blue-Fronted Amazon (Amazona aestiva)

Cited by 9 publications

References 0 publications

Identification of a Novel Adélie Penguin Circovirus at Cape Crozier (Ross Island, Antarctica)

Identification of a Novel Adélie Penguin Circovirus at Cape Crozier (Ross Island, Antarctica)

Genome Sequences of Beak and Feather Disease Virus in Urban Rainbow Lorikeets (Trichoglossus haematodus)

Molecular Diagnosis of Beak and Feather Disease in Native Brazilian Psittacines

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