Abstract
Hatchery-reared pediveliger larvae of the American oyster Crassostrea virginica (Gmelin) were used to evaluate temporal aspects of the relationship between the density of settlers and the subsequent mortality of recruits. Controlled settlement, frequent photographic sampling of experimental substrata, and image analysis techniques allowed for a clear distinction between settlers and recruits over time. High initial mortality and variable responses to density attributable to the oyster growth form resulted in density-independent mortality patterns throughout the sample period. Despite this, the results indicate that estimating densities of settlers from densities of recruits using linear regression analysis is inappropriate with this species because of changes in the mortality rate (slope of the regression lines) with time.
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