Abstract
The effects of location and density on the growth and survival of juvenile freshwater pearl mussel, Chamberlainia hainesiana, 150–360 d after metamorphosis were investigated to determine the optimal ranges for commercial farming in Thailand. Juveniles were reared outdoors in two locations (the Mae Klong Reservoir and the Khwae Yai River, Kanchanaburi Province). Three density levels (25, 50, and 100 mussels/basket) were established at each location, with three replicates per density level. Phytoplankton from the water column in the natural habitats served as feed; no supplemental feed was provided. The mussels cultured in the reservoir had significantly higher growth rates than those cultured in the river (P 0.05), but both showed significant differences in growth from the density level of 100 mussels/basket (P < 0.01).
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