Abstract
Abstract Rothschild, B. J., Adams, C. F., Sarro, C. L., and Stokesbury, K. D. E. 2009. Variability in the relationship between sea scallop shell height and meat weight. – ICES Journal of Marine Science, 66: 1972–1977. We investigated the spatial and temporal variability in the relationship between shell height and meat weight (SHMW) of the sea scallop (Placopecten magellanicus) from Georges Bank (GB) and the mid-Atlantic. Data for the study were collected collaboratively during normal commercial fishing operations. A one-way random-effects ANOVA revealed that 19–44% of the variance in MW was at the batch level. A linear mixed-effects model was used to explain the variability in SHMW regression equations across batches. There was a significant effect of month and year on the SHMW relationship for GB from June through December, and a significant effect of area and year on the SHMW relationship for the mid-Atlantic from January through May. The SHMW relationships presented reflect those of the fishery year-round rather than an estimate of the biological population at a specific point in time. Failure to include intra-annual, interannual, and regional variations in the SHMW could result in continually over- or underestimating the allowable catch in areas open to fishing for short periods. The techniques used are applicable to length–weight studies in general.
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