Fifth and eleventh stage lobsters held in pairs showed significantly longer time between molts than did controls reared individually. In pairs the first animal to molt did not delay ecdysis in the fifth stage, but delayed up to 32% of the control molt period in the eleventh stage. In the fifth stage the second lobster to molt delayed up to 32% and in the eleventh stage up to 71%. Similar differences in time between molts were seen in both an open and a recirculating seawater system.
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Cobb et al. (1974) studied this question.