2001
DOI: 10.1016/s0380-1330(01)70627-2
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Bioaccumulation of PCB Congeners by Diporeia spp.: Kinetics and Factors Affecting Bioavailability

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Cited by 24 publications
(23 citation statements)
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“…2). An analogous inverse dependence of bioaccumulation on gammarid size was observed for PCBs and DDTs and was explained in terms of faster uptake kinetics and higher feeding rates of smaller specimens, as well as their selective feeding on smaller and more contaminated detrital particles (Landrum et al 2001;Viganò et al 2007). The biota to sediment accumulation factors (BSAF) showed deviations from simple partitioning and also evident changes along the River Po.…”
Section: Resultssupporting
confidence: 53%
“…2). An analogous inverse dependence of bioaccumulation on gammarid size was observed for PCBs and DDTs and was explained in terms of faster uptake kinetics and higher feeding rates of smaller specimens, as well as their selective feeding on smaller and more contaminated detrital particles (Landrum et al 2001;Viganò et al 2007). The biota to sediment accumulation factors (BSAF) showed deviations from simple partitioning and also evident changes along the River Po.…”
Section: Resultssupporting
confidence: 53%
“…However, the uptake and values in the second 4‐d study were elevated by approximately a factor of two over the rate constants derived from the other test exposures. While elevated concentrations might have occurred if the animals were smaller, which leads to more rapid uptake as observed for PCB congeners in Diporeia [25], there was no observed difference in organism weight among the experiments. Despite the scatter in both the uptake and elimination coefficients, the elimination rate constant did track directly with the estimated uptake coefficient, which leads to a relatively constant estimate for the bioconcentration factor (BCF).…”
Section: Resultsmentioning
confidence: 99%
“…After arrival to the laboratory, organisms were allowed to acclimate for 48 h at 4ЊC before the start of the experiment. On the basis of reports describing the total body burdens of PCBs in Diporeia (Wong et al 2004) and a biota sediment accumulation factor of 1 (Landrum et al , 2001Kukkonen et al 2004), we exposed Diporeia to a mixture of eight PCB congeners (2-chlorobiphenyl, 2.3-dichlorobiphenyl, 2.4.5-trichlorobiphenyl, 2.2 .4.4 -tetrachlorobipheyl, 2.2 .3 .4.6.-pentachlorobiphenyl, 2.2 .4.4 .5.6 -hexachlorobiphenyl, 2.2 .3.3 .4.4 .6-heptachlorobiphenyl, and 2.2 .3.3 .4.5 .6.6 -octachlorobiphenyl) purchased from ChemService (West Chester, PA). The sediment for this experiment was collected from Lake Michigan and sterilized by autoclaving it.…”
Section: Pcb Exposurementioning
confidence: 99%
“…PCBs are known to elicit a myriad of toxic effects ranging from immunosuppression to cancer (Silkworth and Antrim 1985;Aznar et al 2005). Lipidrich Diporeia would be an ideal target for lipophilic-PCB mediated toxicity, which could potentially increase the susceptibility of Diporeia to secondary stressors (e.g., pathogens; Landrum et al , 2001. Furthermore, Diporeia are not only likely to be exposed to lipophilic contaminants but also highly sensitive to their effects (Gossiaux et al 1993;Landrum and Nalepa 1998;Ralston-Hooper et al 2008).…”
Section: Introductionmentioning
confidence: 99%