铅暴露与排放对中华鲟幼鱼血液中碱性磷酸酶、乳酸脱氢酶及肌酸激酶活力的影响

生态学杂志 ›› 2010, Vol. 29 ›› Issue (07): 1359-1364.

铅暴露与排放对中华鲟幼鱼血液中碱性磷酸酶、乳酸脱氢酶及肌酸激酶活力的影响

章龙珍^1,2**,冯琳^1,2,侯俊利¹,庄平^1,2,冯广朋¹,黄晓荣¹

¹中国水产科学研究院东海水产研究所农业部海洋与河口渔业资源及生态重点开放实验室,上海 200090;²上海海洋大学上海高校水产养殖E-研究院,上海 201306

出版日期:2010-07-08 发布日期:2010-07-08

Effects of lead exposure on the activities of alkaline phosphatase, lactate dehydrogenase and creatine kinase in juvenile Acipenser sinensis blood.

ZHANG Long-zhen^1,2, FENG Lin^1,2, HOU Jun-li¹, ZHUANG Ping^1,2, FENG Guang-peng¹, HUANG Xiao-rong¹

¹Key and Open Laboratory of Marine and Estuarine Fisheries Resource and Ecology, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China;²ShanghaiOcean University, Aquaculture Division, E-Institute of Shanghai Universities, Shanghai 201306, China

Online:2010-07-08 Published:2010-07-08

摘要/Abstract

摘要： 采用水溶液静态置换法，从中华鲟受精卵发育至96 h开始，进行了16周的Pb暴露试验和6周的Pb排放试验，研究了不同浓度Pb²⁺水溶液（0、0.2、0.8和1.6 mg·L^-1）对中华鲟幼鱼血液中碱性磷酸酶(ALP)、乳酸脱氢酶(LDH)和肌酸激酶(CK)活力的影响。Pb暴露后结果显示：幼鱼血液中的ALP活力总体表现为随Pb暴露剂量增加而下降的趋势，其中1.6 mg·L^-1组极显著低于其他各组（P＜0.01）；幼鱼血液中的LDH和CK活力均表现为随Pb暴露剂量增加而升高的趋势，其中LDH活力只在1.6 mg·L^-1组显著升高（P＜0.05）；而CK对Pb浓度则比较敏感，0.8 mg·L^-1组达到对照组的8倍（P＜0.01），1.6 mg·L^-1组则高达对照组的20倍（P＜0.01）。Pb排放后结果显示：幼鱼血液中的ALP活力总体仍表现为随Pb暴露剂量增加而下降的趋势，但各暴露组之间比较差异不显著（P＞0.05）；幼鱼血液中LDH活力各组之间均无显著差异（P＞0.05）。积累和排放对比显示，血液中的ALP活力在0.8和1.6 mg·L^-1组有所回升但无显著差异（P＞0.05）；而LDH活力在1.6 mg·L^-1组极显著降低（P＜0.01），表现出明显恢复。初步认为：经1.6 mg·L^-1Pb²⁺暴露后的中华鲟幼鱼会发生代谢异常；血液CK变化较ALP和LDH更为明显，是Pb污染的敏感指标。

关键词: 城市森林, 景观要素, 尺度, 内部生境, 景观格局

Abstract: By using static replacement method, this paper studied the effects of different Pb concentrations (0, 0.2, 0.8, and 1.6 mg·L^-1) in water on the activities of alkaline phosphatase (ALP), lactate dehydrogenase (LDH) and creatine kinase (CK) in the blood of juvenile Chinese sturgeon (Acipenser sinensis). To start with the zygote having developed for 96 hours, the juveniles were exposed to Pb for 16 weeks, and then transferred to Pb-free water for 6 weeks. After Pb exposure, the ALP activity in the blood presented a downward trend with increasing Pb concentration, and the decrease was significant when the Pb concentration was 1.6 mg·L^-1 (P<0.01). The activities of LDH and CK in the blood increased with increasing Pb concentration, and only LDH activity had a significant increase when the Pb concentration was 1.6 mg·L^-1 (P<0.05). The CK activity in the blood was more sensitive to Pb, which was 7 times higher when the Pb concentration was 0.8 mg·L^-1, and 19 times higher when the Pb concentration was 1.6 mg·L^-1, compared with the control (P<0.01). After 6-week recovery in Pb-free water, the ALP activity in the blood still presented a downward trend with increasing Pb concentration, but no significant differences were observed among all treatments (P＞0.05). The LDH activity in the blood also had no significant differences among the treatments (P>0.05). After transferring to Pb-free water, the ALP activity in the blood had somewhat recovery, whereas the LDH activity recovered significantly. It was considered that after exposure to 1.6 mg·L^-1 of Pb, the juvenile A. sinensis could have metabolic abnormality and tissue (liver or muscle) injury. The CK activity in the blood was more sensitive than the ALP and LDH activities, and thus, could be used as a useful index of Pb pollution for fish.

Key words: Urban forest, Landscape element, Scale, Interior habitat, Landscape pattern

章龙珍,冯琳,侯俊利,庄平,冯广朋,黄晓荣. 铅暴露与排放对中华鲟幼鱼血液中碱性磷酸酶、乳酸脱氢酶及肌酸激酶活力的影响[J]. 生态学杂志, 2010, 29(07): 1359-1364.

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