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Issue 5, 2002
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Kidney, liver and bone cadmium content in the western sandpiper in relation to migration

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Cadmium content was measured in kidney, liver and tarsus bones of western sandpipers (Calidris mauri) at a temperate migratory stopover site (Fraser Delta, British Columbia, Canada) and a wintering site (Playa el Agallito, Chitre, Panama) over a two year period. Cadmium content in liver and kidney was age and sex dependent. Adult females generally had lower kidney and liver cadmium than adult males (P < 0.05), but a sex difference was not detected in juveniles. Cadmium increased with age in kidney, liver and to a lesser extent in bone (P < 0.001) with average “steady-state” kidney and liver content being reached within the sandpipers first year. In general, tissue cadmium residues in adult males and females were independent of sampling location although for bone, site-specific differences did occur (P < 0.001). Bone cadmium was lower in females sampled from their wintering grounds as compared to temperate stopover sites suggesting that bone cadmium may be mobilized during periods of feather molt. Comparison of cadmium residues among sandpipers of increasing age suggest that exposure is occurring along the Pacific Coast, at stopover sites as the birds migrate north to Alaska and south to Panama. This study points to the importance of considering the ecology of the species (e.g., in this case migratory behavior) in interpreting trace metal residues.

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Publication details

The article was received on 24 Jun 2002, accepted on 06 Aug 2002 and first published on 02 Sep 2002

Article type: Paper
DOI: 10.1039/B206045K
Citation: J. Environ. Monit., 2002,4, 791-795
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    Kidney, liver and bone cadmium content in the western sandpiper in relation to migration

    C. N. McFarland, L. I. Bendell-Young, C. Guglielmo and T. D. Williams, J. Environ. Monit., 2002, 4, 791
    DOI: 10.1039/B206045K

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