Original research in the field of environmental pathology, fish toxicology and fish histopathology with particular emphasis on aquatic animals including the effects of natural and synthetic toxicants on cellular structure and of toxicants on embryonic and larval development
Role of disease in population change
Interaction of disease, environmental conditions and physiology on health of free ranging or cultured aquatic animals
Pathogenesis of infectious diseases in aquatic animals

Morphologic pathologist for the Fish Health Service of the UCD Veterinary Medical Teaching Hospital
Review of manuscripts for several journals
Review of histopathology slides and reports dealing with fish carcinogenesis and toxicology for government and industry