Yoshitomo Katsumata
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View article: PCR-based Discrimination and Scanning Electron Microscopy of Genotypically Differentiated Ectoparasitic Flagellates <i>Ichthyobodo</i> spp. Infecting Salmonid Species Cultured in Freshwater in Hokkaido, Japan
PCR-based Discrimination and Scanning Electron Microscopy of Genotypically Differentiated Ectoparasitic Flagellates <i>Ichthyobodo</i> spp. Infecting Salmonid Species Cultured in Freshwater in Hokkaido, Japan Open
The present study investigated the genotype of Ichthyobodo spp. that caused six cases of ichthyobodosis in various salmonid species cultured in freshwater, in Hokkaido, Japan, through molecular phylogenetic analysis of the parasite ribosom…
View article: Quantitative Analysis of Diplomonad Flagellate <i>Spironucleus salmonis</i> Infection in Intestines of Hatchery and Wild Salmonid Fishes in Hokkaido
Quantitative Analysis of Diplomonad Flagellate <i>Spironucleus salmonis</i> Infection in Intestines of Hatchery and Wild Salmonid Fishes in Hokkaido Open
Diplomonad flagellate Spironucleus salmonis infection in hatchery-reared juvenile chum salmon Oncorhynchus keta and masu salmon O. masou has been previously reported in Hokkaido, northern Japan. We established a quantitative real-time PCR…
View article: Ultrastructural and Molecular Phylogenetic Identification of the Diplomonad Flagellate <i>Spironucleus salmonis</i> Infecting Hatchery-reared Salmonid Fishes in Hokkaido
Ultrastructural and Molecular Phylogenetic Identification of the Diplomonad Flagellate <i>Spironucleus salmonis</i> Infecting Hatchery-reared Salmonid Fishes in Hokkaido Open
Systemic infections caused by diplomonad flagellates belonging to the genus Spironucleus commonly result in heavy mortalities in salmonids. Diplomonad flagellates were found in the intestinal lumen of hatchery-reared juvenile chum Oncorhy…
View article: Asymptomatic Infection of <i>Renibacterium salmoninarum</i> in Hatchery-reared Juvenile Chum Salmon <i>Oncorhynchus keta</i> Resulted in Mass Mortalities after Long-term Rearing
Asymptomatic Infection of <i>Renibacterium salmoninarum</i> in Hatchery-reared Juvenile Chum Salmon <i>Oncorhynchus keta</i> Resulted in Mass Mortalities after Long-term Rearing Open
Mass mortalities due to bacterial kidney disease (BKD) occurred after 10-15 months rearing in two groups of chum salmon Oncorhynchus keta which had been raised from asymptomatically infected eggs and fry transferred from private hatcheries…