Effects of chronic exposure to cadmium or copper on Idothea baltica (Crustacea,Isopoda) |
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| Affiliation: | 1. Ocean College, Yantai Research Institute of China Agricultural University, Yantai 264670, PR China;2. Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, PR China;3. Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China;1. CIMA, Faculty of Science and Technology, University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal;2. CENSE and University of Algarve, Faculty of Sciences and Technology, Campus de Gambelas, 8005-139 Faro, Portugal;3. CBME, Faculty of Science and Technology, University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal |
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| Abstract: | Acute toxicty tests (LT50) of copper or cadmium on the crustacean isopod Idothea baltica demonstrated differences between females, males, and juveniles. Copper appears to be more toxic than cadmium. the effects of chronic exposure to 5 μl−1 and 500 μl−1 copper or cadmium were evaluated from survival, body growth, and sex ratio in the first stages of juveniles development. While in juveniles 500 μl−1 significantly affected body growth, sex ratio, and survival, 5 μl−1 affected only survival. The study of the long-term effects of a pollutant on different demographic parameters in a species can serve to assess a ‘safe’ level of environmental contamination. |
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