Jeffrey Rice, Florida Gulf Coast University

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Abstract:

The goal of the experiment was to determine the mineral composition of the blue crab carapace, specifically calcium, magnesium, and strontium. These concentrations were determined spatially, after acidification, and ontogenetically. Calcium carbonate (CaCO₃) percentage was also determined as it is the main constituent of the blue crab carapace. Results showed that the concentration of CaCO₃ was 30% less than previous values reported in the literature. It was also determined that there is a significant difference in calcium concentrations in the carapace between juveniles and adults. No significant difference was observed in the concentrations of calcium and strontium in the carapace of crabs between different rivers in the Chesapeake Bay. As of now the acidification data set is incomplete but early numbers show no significant difference between calcium and strontium in the treatments.