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Full-Text Articles in Animal Sciences
Qpx Susceptibility In Hard Clams Varies With Geographic Origin Of Brood Stock, Lisa M. Ragone Calvo, Eugene Burreson
Qpx Susceptibility In Hard Clams Varies With Geographic Origin Of Brood Stock, Lisa M. Ragone Calvo, Eugene Burreson
Reports
T he results of recent investigations by VIMS and collaborating scientists in Massachusetts and New Jersey indicate that clam strains produced from brood stocks of South Carolina and Florida origin are more susceptible to QPX (Quahog Parasite Unknown) disease than clam strains originating from Virginia, New Jersey, and Massachusetts brood stocks. During a 3-year study clam strains produced at VIMS from brood stocks originating from Massachusetts, New Jersey, Virginia, South Carolina, and Florida were grown at sites in Massachusetts, New Jersey and Virginia and evaluated for survival, growth, condition and QPX disease susceptibility. The clams originating from South Carolina and …
A Comparison Of Methods For Calculating Condition Index In Eastern Oysters Crassostrea Virginica (Gmelin, 1791), Julia S. Rainier, Roger L. Mann
A Comparison Of Methods For Calculating Condition Index In Eastern Oysters Crassostrea Virginica (Gmelin, 1791), Julia S. Rainier, Roger L. Mann
VIMS Articles
A number of techniques have been reported to estimate condition index in oysters and other bivalve molluscs. We report and compare condition index, estimated by three different methods, for oysters collected from a single reef in the James River, Virginia over a four week period in the summer of 1987. Two indices express condition as a ratio of dry meat weight to shell cavity volume, but differ in methods of estimating shell cavity volume. A third method expresses condition as a ratio of dry meat weight to dry shell weight. Within the size range 36-96 mm length there is no …