Abstract:

Procedures for acclimating commercially important euryhaline tilapias to seawater are reviewed. Single-step acclimation (intermediate salinity directly to the final salinity) has been most often used for Oreochromis mossambicus (Peters) and requires only one day at an intermediate salinity with no resulting mortality. Other tilapias which are less salt tolerant have required multistep acclimation (gradual increase in salinity). Time required for seawater acclimation with no mortality ranges from four days for O. aureus (Steindachner) to eight days for O. niloticus. Research needs are discussed.

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Date 1992/08/01

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