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Effect Of Salinity On Infection Progression And Pathogenicity Of Perkinsus-Marinus In The Eastern Oyster, Crassostrea-Virginica (Gmelin), Lisa M. Ragone, Eugene M. Burreson
Effect Of Salinity On Infection Progression And Pathogenicity Of Perkinsus-Marinus In The Eastern Oyster, Crassostrea-Virginica (Gmelin), Lisa M. Ragone, Eugene M. Burreson
VIMS Articles
The effect of salinity on Perkinsus marinus, a protozoan pathogen of the eastern oyster, Crassostrea virginica (Gmelin 1791) was investigated. Oysters parasitized by P. marinus were exposed in the laboratory to 6, 9, 12, and 20 ppt at a temperature ranging from 20-25-degrees-C, for an eight week period. Infection prevalence and intensity were assessed in samples (n = 25) from each treatment following 2, 4, 6, and 8 weeks of exposure and oyster mortality was determined daily. The pathogen persisted, at high prevalences, throughout the course of the experiment at all treatment salinities; however, P. marinus infection development was retarded …