Development of immersion vaccine for bacterial cold-water disease in ayu Plecoglossus altivelis.

Flavobacterium psychrophilum (F. psychrophilum) is the causative agent of bacterial cold-water disease (BCWD) that occurs in ayu Plecoglossus altivelis. Formalin-killed cell of F.

Flow cytometric analysis of the neutrophil respiratory burst of ayu, Plecoglossus altivelis: comparison with other fresh water fish.

Neutrophils of vertebrates undergo respiratory burst activity (RBA) as a defense mechanism against bacterial infections. We report here that ayu (Plecoglossus altivelis) have unusually high RBAs even when they are in a healthy condition. Kidney and blood leukocytes were obtained from ayu, rainbow trout (Oncorhynchus mykiss), carp (Cyprinus carpio), eel (Anguilla japonica), and pond smelt (Hypomesus nipponensis).