Red sea bream iridoviral disease (RSIVD) was first detected causing mass mortality among cultured red sea bream (Pagrus major) in the summer of 1990 in Japan. These viruses are genetically classified into three groups according to the nucleotide sequence of the major capsid protein gene. An...

This chapter covers Heterobothrium okamotoi and Neoheterobothrium hirame, which are monogenean parasites of tiger puffer and olive flounder in Japan, respectively. The life cycle and morphology of these parasites are presented. Focus is given on the diagnosis, external and internal lesions,...