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| Effect of copper exposure on metabolism behavior of juvenile grass carp(Ctenopharyngodon idella) |
| Received:September 26, 2015 |
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| KeyWord:Ctenopharyngodon idella;copper;swimming performance;oxygen consumption rate |
| Author Name | Affiliation | E-mail | | YUAN Xi | Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area, China Three Gorges University, Yichang 443002, China
Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China
Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China | | | HUANG Ying-ping | Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area, China Three Gorges University, Yichang 443002, China
Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China | chem_ctgu@126.com | | JING Jin-jie | Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area, China Three Gorges University, Yichang 443002, China
Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China | | | JIANG Qing | Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area, China Three Gorges University, Yichang 443002, China
Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China | | | XU Tao | Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area, China Three Gorges University, Yichang 443002, China
Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China | | | TU Zhi-ying | Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area, China Three Gorges University, Yichang 443002, China
Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China | | | LI Wei-min | Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area, China Three Gorges University, Yichang 443002, China
Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China | |
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| Abstract: |
| In this investigation, the eco-toxicological effects of copper on the swimming capability of juvenile grass carp(Ctenopharyngodon idella) were measured. Copper concentrations were measured in the gill, liver and muscle tissues of juvenile grass carp after a 96 h exposure to a range of copper concentrations; 0, 0.025, 0.050, 0.075 mg·L-1 and 0.10 mg·L-1. Relative critical swimming speed(Ucrit) and metabolic rate(MO2) range were also measured after exposure. While the exposure did not significantly affect tissue concentrations(P>0.05), it did significantly affect Ucrit and MO2 range(P<0.05). The safe concentration for juvenile grass carp was 0.008 mg Cu·L-1. Compared to the control group, Ucrit decreased by 18.4%, 21.8%, 33.8% and 38.1% after 96 h exposure to 0.025, 0.05, 0.075 mg Cu·L-1 and 0.10 mg Cu·L-1, respectively. The oxygen consumption rate increased exponentially with swimming speed; MO2=a+b×Uc. The speed parameter, c, increased with copper concentration by 37.78%, 33.33%, 56.67% and 61.11%, indicating a decrease in swimming efficiency. MO2 range increased by 37.48% after exposure to 0.10 mg Cu·L-1 copper. Exposure to copper polluted environment significantly affects the metabolism and swimming performance of juvenile grass carp, especially resulted in the decrease of swimming efficiency, inhibited swimming ability. |
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