To evaluate the effects of abrupt salinity decline on the anti-disease ability of scallop Chlamys faireri, the animals in normal salinity were suddenly transferred to the sea water with salinity 20 or 25, respectively. Hemolymph was collected at 0 h, 1 h, 4 h, 12 h, 24 h, 48 h and 72 h to assay total hemocytes number (THN), serum protein concentration (SPC), superoxide dismutase (SOD) and acid phosphatase (ACP) activity. THN and SOD activity were generally lower than those of control, while SPC and ACP activity were generally higher than those of control. After 72 h of low salinity stress, a challenge test was carried out by injection of 1 × 107 bacteria into animals. THN and SOD activity decreased while the SPC and ACP activity increased. Survival rate of scallops in salinity 20 was significantly lower than that of the control at 10 h after challenge. It is concluded that the abrupt decline in salinity probably damages the anti-disease ability of scallop.
|Number of pages||6|
|Journal||Gaojishu Tongxin/Chinese High Technology Letters|
|State||Published - Jul 1 2006|
- Anti-disease ability
- Chlamys farreri