Health and disease are important components in the broader concept of welfare. Understanding the relationship between health and welfare requires inferences about subjective feelings such as pain and distress. Similar types of disease occur in animals and humans, and our assessment of how animals...

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.

This chapter covers the biology, morphology, transmission and impacts of Cryptobia salmositica infection. The diagnosis, clinical signs, histopathology, physiopathology, control and prevention (antiserum, monoclonal antibodies, disease resistance, vaccination, drug therapy, immunochemotherapy and...

This chapter covers Miamiensis avidus and related species parasitizing fish and other aquacultured species. Focus is given on the tissue and geographical distribution, host range, transmission, impact on fish production, diagnosis, external and internal lesions, histopathology, physiopathology and...

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 the host range and specificity, morphology, life cycle, physiopathology, parasite-host interactions, role as disease vector and control and prevention (biological control, environmental approach, drug therapy, vaccination and insecticides) of Lepeophtheirus salmonis and Caligus...