Nucleotide sequence-based identification of a novel circovirus of canaries.
2001
Circovirus-like, spherical particles measuring 16 to 18 nm in diameter were detected in organ homogenates from adult canaries that had died after a short illness characterized by dullness, anorexia, lethargy and feather disorder. A polymerase chain reaction method, based on degenerate primers specific to conserved amino acid sequences in the circovirus replication-associated protein, was used to amplify DNA specific to a novel circovirus, tentatively named canary circovirus (CCV). Sequence analysis of a 510 nucleotide genomic fragment indicated that CCV exhibited 67.4, 64.9, 53.7 and 53.9% nucleotide identities and 70.0, 61.8, 40.4 and 40.1% amino acid identities with columbid (pigeon) circovirus (CoCV), beak and feather disease virus (BFDV), porcine circovirus type 1 and porcine circovirus type 2, respectively. CCV therefore represents a new avian virus of the genus Circovirus of the family Circoviridae, and is more closely related to CoCV than BFDV.The availability of nucleotide sequence data will facil...
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