This chapter covers the general biology and distribution (systematics, life cycle and epidemiology) of Anguillicoloides crassus. The diagnosis, macroscopic and microscopic lesions, pathobiology (mortality, condition, swimming performance and reproduction) and control and prevention (drug therapy,...

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,...

This chapter gives an overview on the morphology, host range, life cycle, impact on oyster production, diagnosis, histopathology, physiopathology and control and prevention (selective breeding) of Perkinsus marinus and Haplosporidium nelsoni.

This chapter gives an overview of the biology (life cycle, parasite stages, transmission and geographical distribution) and diagnosis of Ichthyophthirius multifiliis, host physiopathology and immunity as well as treatment and prevention of infection.