Diseases of oysters.
D000190:Actinomyces; D000656:Amoeba; D000818:Animals; D016798:Ciliophora; D005658:Fungi; D008011:Lichens; D009026:Mortality; D010125:Ostreidae / Q000254:growth & development; D010271:Parasites; D014871:Water Microbiology