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Growth rate and average cell volume were measured throughout auxospore formation in two populations of Thalassiosira weissflogii (Hustedt). In both cases, the entire population shifted from relatively small (800 μm3) to large cells (2800 μm3) over a 5 day interval. This shift was accompanied by a dramatic increase in the average growth rate of the populations from 1.6 to 3.4 doublings/day.
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Costello et al. (1981) studied this question.
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