Water pH and metabolic parameters in silver catfish (Rhamdia quelen) |
| |
| Affiliation: | 1. Department of Fisheries Science, College of Fisheries and Ocean Sciences, Chonnam National University, 50, Daehak-ro, Yeosu, Jeonnam 59626, Republic of Korea;2. Department of Biomedical and Electronic Engineering, College of Engineering, Chonnam National University, Yeosu 59626, Republic of Korea;3. Department of Horticulture, College of Life Science and Natural Resources, Sunchon National University, 255, Jungang-ro, Suncheon-Si, Jeollanam-do 57922, Republic of Korea;4. Department of Food Science and Technology, College of Life Science and Natural Resources, Sunchon National University, 255, Jungang-ro, Suncheon-Si, Jeollanam-do 57922, Republic of Korea;5. Department of Biology, Centre for Advanced Research in Environmental Genomics, University of Ottawa, Ottawa, Ontario, Canada;1. Department of Fisheries Science, College of Fisheries and Ocean Sciences, Chonnam National University, 50, Daehak-ro, Yeosu, Jeonnam 59626, Republic of Korea;2. Department of Horticulture, College of Life Science and Natural Resources, Sunchon National University, 255, Jungang-ro, Suncheon-Si, Jeollanam-do, 67922, Republic of Korea |
| |
| Abstract: | This study evaluated the effects of an acute change in water pH (from pH 7.5 to 4.0, 5.0, 6.0, 7.5, 8.0 or 9.0) on several biochemical parameters in juveniles of the silver catfish, Rhamdia quelen. Ammonia levels decreased in the liver and increased in the muscle with increasing water pH. In the kidney, lower ammonia levels were observed at neutral pH. An increase in water pH decreased the glucose, glycogen and lactate levels in the liver and kidney (except for glycogen levels in the kidney and lactate levels in the liver, which presented lower levels at neutral pH). In muscle, the glucose and glycogen levels decreased with increasing water pH, whereas lactate levels tended to be lower at neutral pH. Gill and kidney Na+/K+-ATPase activities tended to increase in alkaline water, and the highest value was observed in fish exposed to pH 9.0. The optimal levels of the analyzed biochemical parameters occurred at neutral pH. In conclusion, exposure to acidic and alkaline pH changes the metabolic parameters of silver catfish as well as gill Na+/K+-ATPase activity. |
| |
| Keywords: | Metabolic disorders Acidic pH Alkaline pH |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
