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Cadmium and lead uptake by red swamp crayfish (Procambarus clarkii) of Louisiana

Results are presented from laboratory experiments on uptake and excretion of cadmium and lead in crayfish (Procambarus clarkii) exposed to sublethal concentrations of the metals (0.5 mg cadmium chloride and 100 mg lead nitrate, per litre). After 12 weeks exposure to cadmium, the biomagnification fac...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 1993-08, Vol.51 (2), p.296-302
Main Authors: NAQVI, S. M, HOWELL, R. D
Format: Article
Language:English
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Summary:Results are presented from laboratory experiments on uptake and excretion of cadmium and lead in crayfish (Procambarus clarkii) exposed to sublethal concentrations of the metals (0.5 mg cadmium chloride and 100 mg lead nitrate, per litre). After 12 weeks exposure to cadmium, the biomagnification factors for this metal were estimated to be 84 for male animals and 55 for females. There was no rapid depuration when the animals were transferred to clean water; after 12 weeks males and females still contained 36 and 38 per cent, respectively, of the accumulated cadmium. The biomagnification factors for lead were 2.8 for males and 2.7 for females, confirming that this metal was taken up less readily than cadmium. After depuration for 12 weeks, the animals still contained low but detectable amounts of lead.
ISSN:0007-4861
1432-0800
DOI:10.1007/BF00198895