title: Biochemical responses of the copepod Centropages tenuiremis to CO(2)-driven acidified seawater.
abstract: An ecophysiological experiment was conducted to examine the biochemical effects of acidified seawater containing elevated concentration of CO(2) (C(CO2) 0.08, 0.20, 0.50 and 1.00%) on the copepod Centropages tenuiremis. AchE, ATPase, SOD, GPx, GST, GSH level and GSH/GSSG ratio of the copepod were analyzed. The results showed that elevated C(CO2) and the duration of culture time significantly influenced several biochemical indices in C. tenuiremis (ATPase, GPx, GST, GSH and SOD). Furthermore, the principal component analysis results indicated that 72.32% of the overall variance was explained by the first three principal components (GPx, SOD and GSH). Changes in GPx and GSH levels may play a significant role in the antioxidant defense of copepods against seawater acidification. The long-term response of copepods to seawater acidification and the synergistic effects of acidification with other environmental factors, such as temperature, salinity and trace metal need further investigation.
authors.affiliation: College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China.
authors.forename: Dajuan
authors.initials: D
authors.lastname: Zhang
authors.forename: Shaojing
authors.initials: S
authors.lastname: Li
authors.forename: Guizhong
authors.initials: G
authors.lastname: Wang
authors.forename: Donghui
authors.initials: D
authors.lastname: Guo
authors.forename: Kezhi
authors.initials: K
authors.lastname: Xing
authors.forename: Shulin
authors.initials: S
authors.lastname: Zhang
mesh_terms: D000110:Acetylcholinesterase / Q000378:metabolism; D000251:Adenosine Triphosphatases / Q000378:metabolism; D000393:Air Pollutants / Q000737:chemistry*; D000818:Animals; D002245:Carbon Dioxide / Q000737:chemistry*; D033342:Copepoda / Q000378:metabolism*; D004777:Environment; D005978:Glutathione / Q000378:metabolism; D019803:Glutathione Disulfide / Q000378:metabolism; D005979:Glutathione Peroxidase / Q000378:metabolism; D005982:Glutathione Transferase / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D025341:Principal Component Analysis; D012623:Seawater / Q000737:chemistry; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D000393:Air Pollutants; D002245:Carbon Dioxide; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D005982:Glutathione Transferase; D000110:Acetylcholinesterase; D000251:Adenosine Triphosphatases; D005978:Glutathione; D019803:Glutathione Disulfide