Survival and Growth of Freshwater Pearl Mussel(Hyriopsis cumingii) Suspended at Different Water Depth in a Commercial Pond

To examine survival and growth of freshwater pearl mussel(Hyriopsis cumingii)suspended at different water depth(10 cm,40 cm and 80 cm under water surface),a 162-day field experiment was carried out in a commercial pond in Zhuji.Results of the experiment indicated survival rate was not significantly different among the pearl mussel suspended at different water depth,however,shell length,shell width and total weight of the pearl mussel suspended at 40 cm increased faster than that of the pearl mussel suspended at 10 cm and 80 cm.The pearl mussel suspended at 10 cm had the least growth rate in shell and total weight.