Li Zequn, Ren Tongjun, Han Yuzhe, Jiang Zhiqiang, Hu Yanan, Bai Zhuoan, Wang Lianshun, Ding Jingyun
Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, China.
Bull Environ Contam Toxicol. 2018 May;100(5):683-689. doi: 10.1007/s00128-018-2321-9. Epub 2018 Mar 14.
Triplicate groups of sea cucumbers (4.83 ± 0.15 g) were exposed to one of the four nominal concentrations of dietary mercury [0 (control), 67.6, 338, and 676 mg/kg dry weight, and actually total mercury were 17.55, 87.00, 275.50, 468.50 mg/kg, respectively; Table 3] for 21 days. Mercury accumulation in the intestine showed the greatest mercury burden (77.96 ± 1.20 mg Hg/kg tissue wet weight basis). However, survival rate (SR) was not affected. Body weight gain after the 676 mg Hg/kg treatment was significantly lower than the control group. The feed conversion rate of the 676 mg Hg/kg treatment group was significantly higher than the control group. Additionally, the superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) of sea cucumbers decreased as the mercury dose increased. SOD, T-AOC and alkaline phosphatase of the 676 mg Hg/kg treatment group were significantly lower than the control group. However, there were no significant differences between the four groups in acid phosphatase and catalase (CAT) activity.
将三组海参（每组4.83±0.15克）暴露于四种名义浓度的膳食汞之一[0（对照组）、67.6、338和676毫克/千克干重，实际总汞分别为17.55、87.00、275.50、468.50毫克/千克；表3]中21天。肠道中的汞积累显示出最大的汞负荷（以77.96±1.20毫克汞/千克组织湿重计）。然而，存活率（SR）未受影响。676毫克汞/千克处理组后的体重增加显著低于对照组。676毫克汞/千克处理组的饲料转化率显著高于对照组。此外，海参的超氧化物歧化酶（SOD）和总抗氧化能力（T-AOC）随汞剂量增加而降低。676毫克汞/千克处理组的SOD、T-AOC和碱性磷酸酶显著低于对照组。然而，四组之间的酸性磷酸酶和过氧化氢酶（CAT）活性没有显著差异。
