ISSN:
1432-2056
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Semi-static toxicokinetic experiments were performed during a cruise of RV “Polarstern” to the Greenland Sea for Cd, Pb, Cu and Zn in mesozooplankton collectives of Calanus hyperboreus, C. finmarchicus, Metridia longa and Themisto abyssorum, to provide first tentative information on accumulation strategies and the experimental basis for estimation of kinetic parameters of two-compartment models. This is an inevitable precondition for using these organisms as biomonitors. Our results indicate a net accumulation strategy for Cu and Pb (within the given experimental constraints), but a tendency for regulation of Zn and especially for Cd. Two-compartment models were successfully fitted to the data, leading to rate constants statistically different from zero, which were validated by independent experiments. An extrapolation to field conditions is not possible without further evaluation. The collectives investigated may be regarded as potentially suitable biomonitors of Cu and Pb, but probably not of Zn and Cd. More information is required for a wider range of external metal exposures and the potential influences of life-history status on metal toxicokinetics must be clarified, before this approach can be fully adopted in the assessment of environmental quality.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003000050128
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