The second set of two experiments were similar to the first except that in Exp S-2, we established four replicates per treatment, each with 12 larvae per replicate, but tested only four salinities including the 30‰ control. In Exp S-3, larvae were exposed to only three salinities Ž30‰, 12‰, 10‰.. They were generally stressed either for 24 h Žthree replicates, 12 larvae per replicate. or 48 h Žthree replicates, 12 larvae per replicate. except that larvae were exposed to the lowest salinity only for 24 h.