Long-term observationsof selected heavy metals contained in otoliths of cod from the Southern Baltic
Cadmium, lead, copper, chromium and zinc contents were determined in otoliths of the cod Gadus morhua L. from the Southern Baltic. It was shown that the levels of these heavy metals fluctuated during the period of investigation (1969-1985). It was found that levels of Cd, Cu, Cr and Zn decreased wit...
| Main Authors: | , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Institut für Meereskunde
1988
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| Subjects: | |
| Online Access: | https://oceanrep.geomar.de/id/eprint/56217/ https://oceanrep.geomar.de/id/eprint/56217/1/Protasowicki_M_1988.pdf |
| Summary: | Cadmium, lead, copper, chromium and zinc contents were determined in otoliths of the cod Gadus morhua L. from the Southern Baltic. It was shown that the levels of these heavy metals fluctuated during the period of investigation (1969-1985). It was found that levels of Cd, Cu, Cr and Zn decreased with age and age-dependent morphometric parameters, while the amount of lead increased. Sex of cod did not affect the level of bioaccumulation of these five trace elements in the otoliths. With the exception of Cu no differences were found between heavy metal contents in otoliths of cod from the Gdańsk and Bornholm Deep. |
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