Document Detail

Effects of total dissolved gas supersaturated water on lethality and catalase activity of Chinese sucker (Myxocyprinus asiaticus Bleeker).
MedLine Citation:
PMID:  23024046     Owner:  NLM     Status:  MEDLINE    
Total dissolved gas (TDG) supersaturation caused by dam sluicing can result in gas bubble trauma (GBT) in fish and threaten their survival. In the present study, Chinese suckers (Myxocyprinus asiaticus Bleeker) were exposed to TDG supersaturated water at levels ranging from 120% to 145% for 48 h. The median lethal concentration (LC(50)) and the median lethal time (LT(50)) were determined to evaluate acute lethal effects on Chinese suckers. The results showed that the LC(50) values of 4, 6, 8, and 10 h were 142%, 137%, 135%, and 130%, respectively. The LT(50) values were 3.2, 4.7, 7.8, 9.2, and 43.4 h, respectively, when TDG supersaturated levels were 145%, 140%, 135%, 130%, and 125%. Furthermore, the biological responses in Chinese suckers were studied by assaying the catalase (CAT) activities in gills and muscles at the supersaturation level of 140% within LT(50). The CAT activities in the gills and muscle tissues exhibited a regularity of a decrease after an increase. CAT activities in the muscles were increased significantly at 3/5LT(50) (P<0.05) and then came back to the normal level. However, there were no significant differences between the treatment group (TDG level of 140%) and the control group (TDG level of 100%) on CAT activities in the gills before 3/5LT(50) (P>0.05), but the activities were significantly lower than the normal level at 4/5LT(50) and LT(50) (P<0.05).
Shi-chao Chen; Xiao-qing Liu; Wen Jiang; Ke-feng Li; Jun Du; Dan-zhou Shen; Quan Gong
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of Zhejiang University. Science. B     Volume:  13     ISSN:  1862-1783     ISO Abbreviation:  J Zhejiang Univ Sci B     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-01     Completed Date:  2013-03-04     Revised Date:  2013-07-11    
Medline Journal Info:
Nlm Unique ID:  101236535     Medline TA:  J Zhejiang Univ Sci B     Country:  China    
Other Details:
Languages:  eng     Pagination:  791-6     Citation Subset:  IM    
State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, China.
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MeSH Terms
Catalase / metabolism*
Cypriniformes / metabolism*
Gases / analysis,  toxicity*
Lethal Dose 50
Power Plants / standards
Time Factors
Water / chemistry*
Water Quality / standards
Reg. No./Substance:
0/Gases; 7732-18-5/Water; EC

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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