title: Effect of Copper on Growth, Digestive and Antioxidant Enzyme Activities of Juvenile Qihe Crucian Carp, Carassius carassius, During Exposure and Recovery.
abstract: The toxicity of copper (Cu) on growth and activities of digestive and antioxidant enzymes in the hepatopancreas and intestine of juvenile Qihe crucian carp Carassius carassius was evaluated. The fish were exposed in different Cu solutions for 20 days, and the 0.60 mg/L group was then transferred to clean water to initiate a 20-day recovery period after Cu exposure. Results showed that all enzyme activities decreased significantly at high-concentration (0.30 and 0.60 mg/L) and long-time (20 days) Cu exposures and increased significantly at high-concentration (0.60 mg/L) and short-time Cu exposures (1 day). After the 20-day recovery period, all enzyme activities in the 0.60 mg/L group had recovered to control levels. High-concentration (0.60 mg/L) and long-time (20 days) Cu exposure markedly hindered the growth of fish, whereas the loss of fish growth can not be compensated for by a 20-day recovery period.
authors.affiliation: College of Fisheries, Henan Normal University, No. 46 Jianshe East Road, Xinxiang City, 453007, People's Republic of China.
authors.forename: Hongxia
authors.initials: H
authors.lastname: Jiang
authors.affiliation: College of Fisheries, Henan Normal University, No. 46 Jianshe East Road, Xinxiang City, 453007, People's Republic of China. xhkong@yeah.net.
authors.forename: Xianghui
authors.initials: X
authors.lastname: Kong
authors.affiliation: College of Fisheries, Henan Normal University, No. 46 Jianshe East Road, Xinxiang City, 453007, People's Republic of China.
authors.forename: Shuping
authors.initials: S
authors.lastname: Wang
authors.affiliation: College of Fisheries, Henan Normal University, No. 46 Jianshe East Road, Xinxiang City, 453007, People's Republic of China.
authors.forename: Huiyun
authors.initials: H
authors.lastname: Guo
mesh_terms: D000375:Aging / Q000378:metabolism*; D000818:Animals; D000975:Antioxidants / Q000378:metabolism*; D002347:Carps / Q000254:growth & development* / Q000378:metabolism; D003300:Copper / Q000633:toxicity*; D004305:Dose-Response Relationship, Drug; D043143:Hepatopancreas / Q000187:drug effects* / Q000201:enzymology; D007422:Intestines / Q000187:drug effects* / Q000201:enzymology; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D000975:Antioxidants; D014874:Water Pollutants, Chemical; D003300:Copper
keywords: Antioxidant enzyme; Copper exposure; Digestive enzyme; Growth; Qihe crucian carp; Recovery