RESUMO
Surveillance of avian influenza virus and paramyxovirus in migratory waterfowl and shorebirds was conducted in the San-in district of western Japan from the winter of 2001 to 2008. From 4,335 fecal samples from wild birds, 41 avian influenza viruses of 12 different HA and NA combinations, including two H5N3 strains, and 13 avian paramyxoviruses were isolated. Phylogenetic analysis of HA genes revealed that H5N3 strains clustered in a different branch from the recent highly pathogenic H5N1 isolates in Japan; however, the introduction of new highly pathogenic avian influenza virus by migratory birds cannot be ignored. Therefore, it is necessary to continue surveillance of these potentially serious pathogens in waterfowl and shorebirds.
Assuntos
Doenças das Aves/virologia , Influenza Aviária/epidemiologia , Infecções por Paramyxoviridae/veterinária , Migração Animal , Animais , Animais Selvagens/virologia , Doenças das Aves/epidemiologia , Aves , Patos/virologia , Gansos/virologia , Vírus da Influenza A/classificação , Vírus da Influenza A/isolamento & purificação , Japão/epidemiologia , Infecções por Paramyxoviridae/epidemiologiaRESUMO
Some trematodes were found in the cloaca of a rustic bunting (Emberiza rustica) captured in Tsushima Islands, Japan. From their morphological characters and distribution, the flukes were identified as Urogonimus macrostomus. The phylogenetic relationship between this fluke and related species was inferred from the 28S rRNA gene sequences, and the gene sequence of the fluke was found to differ at only 4 nucleotide positions from that of U. macrostomus reported from Ukraine. This is the first report of this species in Japan.
