Temporal variations of heavy metals in Mercenaria mercenaria [clam, Ni, Pb, Cu, Cd, Cr, Zn, nickel, lead, copper, cadium, chromium, zinc, spawning cycle, body weight, biological processes, Great South Bay, New York, USA]
1981
Behrens, W.J. (Ecosystems Center, Woods Hole, Massachusetts (USA). Marine Biological Lab.) | Duedall, I.W.
Simultaneous analyses of changes in dry body weight, heavy metal concentrations, and total body burden of heavy metals in Mercenaria indicate that temporal variations in metal levels are associated with biological processes of the organism. Changes in Ni, Pb, and Cu levels in hard clams are related to the spawning cycle while Cd, Cr, and Zn levels are not. The interpretation of fluctuations in metal concentrations may be misleading unless considered with respect to seasonal variations in body weight.
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