CADMIUM, COPPER AND LEAD IN GASTROPODS OF THE LOWER NELSON RIVER SYSTEM, MANITOBA, CANADA
Cadmium, copper and lead were examined in whole snails from the Lower Nelson River system. Concentrations of the three metals were significantly correlated with each other. Lead was accumulated least, while copper was present in the greatest concentrations. Significant interspecific differences were...
| Published in: | Journal of Molluscan Studies |
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| Main Author: | |
| Format: | Text |
| Language: | English |
| Published: |
Oxford University Press
1992
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| Subjects: | |
| Online Access: | http://mollus.oxfordjournals.org/cgi/content/short/58/2/199 https://doi.org/10.1093/mollus/58.2.199 |
| Summary: | Cadmium, copper and lead were examined in whole snails from the Lower Nelson River system. Concentrations of the three metals were significantly correlated with each other. Lead was accumulated least, while copper was present in the greatest concentrations. Significant interspecific differences were found for copper. Total body burdens increased with snail size and weight, but concentrations per unit dry weight decreased with size and weight in some species. Metal concentrations in snails were not significantly correlated with metal content of the sediments. In Gyraulus , copper and lead concentrations were correlated with levels of these metals in the host macrophytes. Seasonal differences in metal concentration appeared to be related to differences in age structure of the populations. |
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