Survival,growth and shell deformities of copper- and cadmium-exposed mussels (Mytilus edulis L.) in brackish water |
| |
| Authors: | Inke Sunila Reijo Lindström |
| |
| Institution: | 1. Department of Zoology, Division of Physiology, University of Helsinki, Arkadiankatu 7, SF-00100 Helsinki 10, Finland;2. Department of Genetics, University of Helsinki, Arkadiankatu 7, SF-00100 Helsinki 10, Finland |
| |
| Abstract: | Mussels, Mytilus edulis L., were exposed to elevated concentrations of copper or cadmium in the laboratory, then placed in cages in the sea (salinity 7‰). One year later maximum lengths of the mussels were measured and shells screened for deformities. Growth was 0·6 cm year?1 in the control cages and retarded in cages of exposed mussels. A total of 63% of cadmium-exposed and 46% of copper-exposed mussels had shell deformities. In the control cages 26% were deformed while in a natural population only 3% were deformed. The proportion of deformities to growth was inversely related. Low concentrations showed their injuriousness in this long-term test, probably due to the closing of the valves during exposure to high concentrations. |
| |
| Keywords: | shells survival growth copper cadmium Gulf of Finland |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
