Short term cadmium intoxication of the shrimp Palaemon serratus: Effect on adenylate metabolism |
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| Institution: | 1. Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kgs. Lyngby, Denmark;2. Department of Bioscience, Aarhus University, Vejlsøvej 25, DK-8600 Silkeborg, Denmark;3. Ecossa, Giselastrasse 6, 82319 Starnberg, Germany;4. University of Bielefeld, Animal Ecology, Konsequenz 45, D-33615 Bielefeld, Germany;1. Department of Ecology, Institute for Biological Research ‘Siniša Stanković’, University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia;2. Department of Hydroecology and Water Protection, Institute for Biological Research ‘Siniša Stanković’, University of Belgrade, Bul. Despota Stefana 142, 11060 Belgrade, Serbia;3. Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia |
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| Abstract: | - 1.1. Shrimps were exposed for 96 hr to various concentrations of cadmium under laboratory conditions. The LC50 was around 4 ppm Cd in water, which corresponded to 0.180 μg/g wet weight of cadmium in tail muscles.
- 2.2. The effect of various concentrations of cadmium on adenylates was analyzed in tail muscles: At subletal cadmium concentrations, no variation of ATP, ADP and of the adenylate sum occurred, while the AMP concentration began to decrease from 0.06 ppm.
At the LC50, the ATP, ADP and AMP concentrations dropped acutely, the ATP/ADP ratio increased acutely.The apparent equilibrium constant of the adenylate kinase reaction increased significantly from 2 ppm Cd, indicating an impairment in energetic metabolism.Cadmium intoxication did not influence the value of the adenylate energy charge. |
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