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Antioxidative responses and bioaccumulation in Japanese flounder larvae and juveniles under chronic mercury exposure
Huang, Wei1,2; Cao, Liang1,2; Ye, Zhenjiang3; Yin, Xuebo1; Dou, Shuozeng1
2010-06-01
Source PublicationCOMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
Volume152Issue:1Pages:99-106
SubtypeArticle
AbstractThis study investigated the sub-lethal effects of waterborne mercury on growth, bioaccumulation and antioxidative responses of larvae and juveniles of Japanese flounder (Paralichthys olivaceus). Fish were exposed to 0-10 mu g Hg(2+) L(-1) solutions from embryonic to the juvenile stages for 80 days. Antioxidative responses to mercury exposure were studied in metamorphosing larvae (18 days post hatching, dph), settling larvae (33 dph) and juveniles (78 dph). Results showed that increasing mercury concentration led to increased mercury bioaccumulation and reduced flounder growth. Of the antioxidants investigated, superoxide dismutase (SOD) and catalase (CAT) activities at the three developmental stages were sensitive to mercury exposure and increased with increasing mercury concentration. Glutathione (GSH) content was elevated in metamorphosing larvae, but decreased in juveniles as mercury concentration increased. Glutathione-S-transferase (GST) activity did not significantly vary with mercury concentration in either larvae or juveniles. Mercury exposure did not affect malondialdehyde (MDA) content of larvae, but significantly increased MDA content of juveniles. Results suggest that flounder larvae and juveniles have the potential to manipulate the levels of antioxidants such as SOD, CAT and GSH, which protect flounder from oxidative stress induced by mercury exposure. These antioxidants could serve as biomarkers of mercury contamination in the aquatic environment. (C) 2010 Elsevier Inc. All rights reserved.
KeywordMercury Bioaccumulation Antioxidant Biomarker Lipid Peroxidation Paralichthys Olivaceus Els Sub-lethal Toxicity
DOI10.1016/j.cbpc.2010.03.005
Indexed BySCI
Language英语
WOS IDWOS:000278211800014
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/32843
Collection海洋生态与环境科学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
3.Ocean Univ China, Fishery Coll, Qingdao 266003, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Huang, Wei,Cao, Liang,Ye, Zhenjiang,et al. Antioxidative responses and bioaccumulation in Japanese flounder larvae and juveniles under chronic mercury exposure[J]. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY,2010,152(1):99-106.
APA Huang, Wei,Cao, Liang,Ye, Zhenjiang,Yin, Xuebo,&Dou, Shuozeng.(2010).Antioxidative responses and bioaccumulation in Japanese flounder larvae and juveniles under chronic mercury exposure.COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY,152(1),99-106.
MLA Huang, Wei,et al."Antioxidative responses and bioaccumulation in Japanese flounder larvae and juveniles under chronic mercury exposure".COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY 152.1(2010):99-106.
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