| 摘要: |
| 通过实验生态学方法, 研究了乌苏里拟鲿(Pseudobagrus ussuriensis)的初次摄食率、不可逆点、窒息点以及对5种常见渔药的敏感性。结果表明: 水温22～23℃条件下, 乌苏里拟鲿第7日龄初次摄食率达到最高值100%, 仔鱼不可逆点(PNR)发生在孵化后第13天; 窒息点与水温呈正相关性(R=0.909 3,P<0.001)、与体质量呈负相关性(R=?0.881 6, P<0.05); 水温24～25℃条件下, 乌苏里拟鲿对硫酸铜+硫酸亚铁合剂(比例5 : 2)、高锰酸钾、硫酸铜、甲醛、氯化钠5种渔药的安全浓度分别为0.34、0.24、0.27、4.03、1135.56 mg/L, 对5种药物敏感性依次排序为: 高锰酸钾>硫酸铜>硫酸铜+硫酸亚铁合剂>甲醛>氯化钠。 |
| 关键词: 乌苏里拟鲿(Pseudobagrus ussuriensis) 急性毒性 安全质量浓度 不可逆点 窒息点 渔药 |
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| 基金项目:江苏省科技厅科技支撑项目(BE2009340); 苏州市科技局科技支撑项目(SNG0912) |
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| Pseudobagrus ussuriensis: the point of no return, suffocation point, and sensitivity to five aquacultural drugs |
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| Abstract: |
| Pseudobagrus ussuriensis was studied for its initial feeding rate, point of no return (PNR), suffocation point, and acute toxicity of five aquacultural drugs to through an ecological method. At 22～23 ℃, the maximum value of the initial feeding rate was100% in the seventh day after hatching. The PNR of larvae appeared on the 13th day after hatching. The suffocation point of Pseudobagrus ussuriensis was positively correlated with water temperature (R=0.909 3, P<0.001) and negatively correlated with body weight (R=?0.881 6, P<0.05). At 24～25 ℃ condition, the safe concentrations of CuSO4+FeSO4 (Ratio 5:2), KMnO4, CuSO4, HCHO, and NaCl to Pseudobagrus ussuriensis were 0.34, 0.24, 0.27, 4.03, and 1135.56 mg/L, respectively. The sensitivity Pseudobagrus ussuriensis toward the five commonly-used aquacultural drugs was KMnO4> CuSO4> CuSO4+FeSO4(Ratio 5 : 2)> HCHO> NaCl. |
| Key words: Pseudobagrus ussuriensis acute toxicity safety concentration point of no return suffocation point aquacultural drugs |
