The migration of Macrobrachium ohione during its spawning season was observed from 1969 to 1971 in the Galveston Bay area. Maximum activity was at night and during the new moon. Rainfall seemed to be associated with increased movement. Salinities near 15 ‰ appeared to act as a barrier to movement of this species into the Galveston Bay system.
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Reimer et al. (1974) studied this question.