海洋酸化背景下铅胁迫对近江牡蛎溶菌酶活性的影响-《江苏农业科学》

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Title:: Effects of Pb stress on lysozyme activity of Crassostrea rivularis under ocean acidification

作者:: 李晓梅; 郭体环; 张来军; 李由明; 琼州学院热带生物与农学院，海南三亚 572022

Author(s):: Li Xiaomei; et al

关键词:: 海洋酸化; 铅; 鳃; 溶菌酶; 近江牡蛎

Keywords:: -

分类号:: X55

DOI:: -

文献标志码:: A

摘要:: 为探讨在未来海洋酸化背景下重金属对贝类免疫的影响，在实验室条件下设置0.05、0.50、5.00 mg/L 3种硝酸铅质量浓度，以0 mg/L作为对照，比较正常海水(pH值8.0)与酸化海水(pH值7.6)条件下铅胁迫对近江牡蛎鳃组织溶菌酶含量的影响。结果表明，低pH值高铅质量浓度组［pH值7.6，Pb(NO₃)₂质量浓度5.00 mg/L］的鳃组织溶菌酶含量随时间的延长直线下降，其余各试验组的鳃组织溶菌酶含量总体呈先下降、后上升、再下降的变化趋势。至30 d时，对照组［pH值8.0，Pb(NO₃)₂质量浓度0.00 mg/L］的溶菌酶含量显著高于其他组(P<0.05)，而低pH值高铅质量浓度组显著低于其他组(P<0.05)，酸化组的近江牡蛎鳃组织溶菌酶含量均低于正常海水组，差异显著(P<0.05)。在2种pH值条件下，近江牡蛎鳃组织溶菌酶含量均随硝酸铅质量浓度的增加而降低。研究表明，近江牡蛎长时间暴露于低pH值、铅胁迫或低pH值与铅胁迫共存的环境下，均导致其鳃组织溶菌酶含量降低、免疫力下降；海洋酸化和铅对近江牡蛎具有联合毒性效应。

Abstract:: -

参考文献/References:

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