Food Web–Specific Biomagnification of Persistent Organic Pollutants

@article{Kelly2007FoodWB,
  title={Food Web–Specific Biomagnification of Persistent Organic Pollutants},
  author={B. Kelly and M. Ikonomou and J. Blair and A. Morin and F. Gobas},
  journal={Science},
  year={2007},
  volume={317},
  pages={236 - 239}
}
Substances that accumulate to hazardous levels in living organisms pose environmental and human-health risks, which governments seek to reduce or eliminate. Regulatory authorities identify bioaccumulative substances as hydrophobic, fat-soluble chemicals having high octanol-water partition coefficients (KOW)(≥100,000). Here we show that poorly metabolizable, moderately hydrophobic substances with a KOW between 100 and 100,000, which do not biomagnify (that is, increase in chemical concentration… Expand
Dietary Uptake Patterns Affect Bioaccumulation and Biomagnification of Hydrophobic Organic Compounds in Fish.
TLDR
This study indicates that in addition to the well-known lipid-water partitioning, the bioaccumulation of HOCs in fish is also a discontinuous kinetic process caused by the fluctuation of Hoc concentration in the gastrointestinal tract as a result of the discrete food ingestion. Expand
Trophic magnification of legacy persistent organic pollutants in an urban terrestrial food web.
TLDR
Trophic magnification factors of legacy POPs investigated in this terrestrial food web increased in a statistically significant relationship with both the logarithm of the octanol-air (log KOA) and octanal-water partition (log KOW) coefficients of the POPs. Expand
Variation in bioaccumulation of persistent organic pollutants based on octanol-air partitioning: Influence of respiratory elimination in marine species.
TLDR
A significant positive correlation between POP concentration and log KOA in spotted seal tissues for low log KOW compounds is found, which provides further evidence for empirical models and observed bioaccumulation patterns in air-breathing organisms, and highlights the potential for bioaccUMulation of these compounds in Arctic marine mammals. Expand
Bioaccumulation of Dioxins, PCBs, and PAHs
Persistent, bioaccumulative, and toxic (PBT) chemicals are by-products of incineration, combustion, and industrial processes or are sometimes intentionally produced for commercial use. This class ofExpand
The trophic transfer of persistent pollutants (HCB, DDTs, PCBs) within polar marine food webs.
TLDR
The Antarctic trophic web was more depleted than the sub-Arctic one and the differences highlighted for the basal part could explain the difference in length between them, and biomagnification is apparently less important than bioconcentration. Expand
Dietary administration of EDC mixtures: A focus on fish lipid metabolism.
TLDR
The results obtained at hepatic level pinpointed the steatotic effect of all the administered diets, associated to a modulation of the expression of genes involved in lipid metabolism, indicating that the administration of mixture of contaminants exerts a milder lipogenic effect, highlighting the contrasting/antagonistic interaction establishing among chemicals. Expand
Biomarkers based tools to assess environmental and chemical stressors in aquatic systems
Abstract The quality of aquatic systems is threated by the huge amount of chemicals dispersed in the environment. Anthropogenic activities are one of the main causes of pollution by metals, waterExpand
Exposure, Bioaccumulation, Metabolism and Monitoring of Persistent Organic Pollutants in Terrestrial Wildlife
Despite the reduction in the production and emissions of legacy organohalogenic compounds, such as polychlorinated biphenyls (PCBs), organochlorine (OC) pesticides and polychlorinatedExpand
Processes influencing chemical biomagnification and trophic magnification factors in aquatic ecosystems: Implications for chemical hazard and risk assessment.
TLDR
It is suggested that simple but realistic evaluative food web models could be used to extend BCF and BAF assessments to include BMFs and TMFs, thus providing a tool to address bioaccumulation hazard and the potential risk of exposures to elevated chemical concentrations in organisms at high trophic levels. Expand
Organic Contaminants and Fish
TLDR
This chapter focuses on a new threat: anthropogenic contamination that includes historic persistent organic pollutants, current contaminants, and emerging threats (hydrocarbons and organometallics), and Emerging threats (endocrine disruptors, pharmaceuticals, and personal care products). Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 25 REFERENCES
An arctic terrestrial food-chain bioaccumulation model for persistent organic pollutants.
  • B. Kelly, F. Gobas
  • Environmental Science, Medicine
  • Environmental science & technology
  • 2003
TLDR
A model representing the bioaccumulation of persistent organic pollutants (POPs) in arctic terrestrial mammalian food-chains is developed, parametrized, tested, and analyzed and illustrates a strong relationship between biomagnification factors and chemical K(OA) and illustrates the effect of age, sex, and temperature on POPs bio Accumulation. Expand
A thermodynamic-based evaluation of organic chemical accumulation in aquatic organisms.
TLDR
It is concluded that food chain transfer can result in an increase in concentration with trophic level, and this increase appears to be significant for chemicals with octanol-water partition coefficients greater than about 10/sup 4/. Expand
A review of bioconcentration factor (BCF) and bioaccumulation factor (BAF) assessments for organic chemicals in aquatic organisms
Bioaccumulation assessment is important in the scientific evaluation of risks that chemicals may pose to humans and the environment and is a current focus of regulatory effort. The status ofExpand
Influence of chemical and biological factors on trophic transfer of persistent organic pollutants in the northwater polynya marine food web.
TLDR
Results of this study show the utility of using delta 15N to characterize trophic level andtrophic transfer of POPs but highlight the effects of species and chemical differences on trophIC transfer of Pops that can be overlooked when a single magnification factor is applied to an entire food web. Expand
Bioaccumulation of persistent organic pollutants in lichen-caribou-wolf food chains of Canada's Central and Western Arctic.
  • B. Kelly, F. Gobas
  • Environmental Science, Medicine
  • Environmental science & technology
  • 2001
TLDR
Field-collected concentration data and corresponding fugacities of various hydrophobic organic chemicals show that persistent substances including beta-hexachlorocyclohexane and 1,2,4,5-tetrachlorobenzene with a K(OW) <10(5) can substantially biomagnify in lichen-caribou-wolf food chains in Canada's Central and Western Arctic. Expand
Mechanism of Biomagnification in Fish under Laboratory and Field Conditions
While biomagnification of certain organic contaminants in food chains has been observed in field studies, the mechanism of the biomagnification process is still unresolved. Knowledge of the mechanismExpand
Food Web Magnification of Persistent Organic Pollutants in Poikilotherms and Homeotherms from the Barents Sea
TLDR
Concentrations of lipophilic and persistent organochlorines were orders of magnitude higher in homeotherms than in poikilotherms, with the highest food web magnification factors (FWMFs) for cis-chlordane and p,p‘-DDE. Expand
Dietary accumulation of perfluorinated acids in juvenile rainbow trout (Oncorhynchus mykiss).
TLDR
Sulfonates bioaccumulated to a greater extent than carboxylates of equivalent perfluoroalkyl chain length, indicating that hydrophobicity is not the sole determinant of PFA accumulation potential and that the acid function must be considered. Expand
Gastrointestinal magnification : the mechanism of biomagnification and food chain accumulation of organic chemicals
Dietary bioaccumulation experiments with chlorobenzenes, PCBs, and mirex in guppies and goldfish are presented. The results demonstrate that, in the gastrointestinal tract of fish, the fugacity ofExpand
Dietary accumulation and depuration of hydrophobic organochlorines: Bioaccumulation parameters and their relationship with the octanol/water partition coefficient
Dietary accumulation of 23 hydrophobic organochlorines (OCs) by juvenile rainbow trout (Oncorhynchus mykiss) was studied with the objective of obtaining relationships between bioaccumulationExpand
...
1
2
3
...