Acute and long-term toxicity of cadmium to Idothea baltica (crustacea,isopoda) |
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| Institution: | 1. Department of Geography & Environmental Studies, Wilfrid Laurier University, Waterloo, Ontario, Canada N2L 3C5;2. BALCAMAN Consulting, Nanaimo, British Columbia, Canada V9T 0J4;3. Department of Geography, Memorial University of Newfoundland, St. John''s, Newfoundland and Labrador, Canada A1B 3×9;4. Ecosystem Science and Management, University of Northern British Columbia, Prince George, BC, Canada V2N 4Z9;5. Department of Geography, University of Victoria, Victoria, BC, Canada V8P5C2;6. Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, Alberta, Canada T6G 2H9;7. School of Environmental Planning, University of Northern British Columbia, Prince George, BC, Canada V2N 4Z9;8. Nature Matters, 91 Cooper Street, Cambridge, Ontario, Canada N3C 2N5;9. School for Resource and Environmental Studies, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4R2;1. College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, PR China;2. Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, NO. 3-11, Wenhua Road, Heping District, Shenyang, Liaoning 110819, PR China;3. School of Resources and Environmental Engineering, Jilin Institute of Chemical Technology, No. 45 Chengde Street, Longtan District, Jilin 132022, PR China;1. Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109, United States;2. Instituto de Hidráulica e Hidrología, Universidad Mayor de San Andrés, Nuestra Señora de La Paz, Bolivia;3. Institute of Geosciences, University of Tübingen, Tübingen, Germany;1. CESAM and Departamento de Biologia, Universidade de Aveiro, Campus Universitário de Santiago, 3810-191 Aveiro, Portugal;2. Department of Chemistry and Geochemistry, Colorado School of Mines,1012 14th Street, Golden, CO 80401, USA |
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| Abstract: | Acute toxicity tests of cadmium on Idothea baltica demonstrated differences among females, males and juveniles. Chronic toxicity tests showed that a sublethal concentration of cadmium sulphate administered during embryonic and/or larval development causes reduction of growth and increased death rate. A paradoxical effect was observed in juveniles treated during embryonic development, which in the first 60 days of life showed a temporarily significant increase in body size, as compared with controls. The criteria for establishing water quality in order to guarantee protection of the environment are discussed. |
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