The effects of cadmium on ALA-D activity, growth and haemoglobin content in the water flea, Daphnia magna.
The ALA-D activity, haemoglobin content and growth was studied in the water flea, Daphnia magna, exposed to 0, 0.1, 0.2, 0.4, 0.8 and 1.6 micrograms Cd/l. The ALA-D activity in water fleas exposed to 0.2-1.6 micrograms Cd/l fluctuated around the control value. The activity in animals exposed to 0.1 micrograms Cd/l decreased during the entire experiment. After 16 days exposure to cadmium the haemoglobin content in water fleas ranged between 80 and 31% of control value. In animals exposed to 0.8 and 1.6 micrograms Cd/l the haemoglobin content decreased progressively during the experiment. Growth was not affected by cadmium at these concentrations.
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D000818:Animals; D002104:Cadmium / Q000494:pharmacology*; D003621:Daphnia / Q000187:drug effects* / Q000378:metabolism; D006454:Hemoglobins / Q000378:metabolism; D000623:Porphobilinogen Synthase / Q000378:metabolism*; D013347:Subcellular Fractions / Q000378:metabolism
D006454:Hemoglobins; D002104:Cadmium; D000623:Porphobilinogen Synthase