Abstract
We have compared the convenience and accuracy of two models using 6 shell dimensions for predicting 4 biomass parameters for 4 species of southern U.S.A. unionids (Quadrula quadrula, Q. pustulosa, Lampsilis anodontoides, and Amblema perplicata). Prediction of whole wet weight, tissue wet weight, tissue dry weight, and shell dry weight as a linear function of (shell length)3 was accurate, even with extremely small sample sizes. In addition, this method is very convenient for field use because it requires one simple, unambiguous shell measurement.
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