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Induced triploidy has been used in oyster culture to improve growth, but has not been fully explored for the hard clam Mercenaria mercenaria notata. Therefore, growth was examined in approximately 14 week-old (Exp I) and 15–18 week-old (Exp II) triploid juvenile hard clams in two 3-week experiments. Triploidy was induced chemically (cytochalasin B, 1.0 mg/l) by inhibiting polar body I (PBI) or polar...
The effect of acclimation time, habituation period, and final freshwater ion composition on the survival of freshwater-acclimated Pacific white shrimp Litopenaeus vannamei postlarvae was investigated. During each of three experiments, shrimp were acclimated from 30 ppt to freshwater (<1 ppt TDS) utilizing various acclimation times (32, 40, 48, 72 h) with a constant or variable rate of salinity...
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