Bioaccumulation of Kepone by spot (Leiostomus xanthurus): Importance of dietary accumulation and ingestion rate

Fisher, Daniel J.; Clark, James R.; Roberts, Morris H.; Connolly, John P.; Mueller, Leonard H.

doi:10.1016/0166-445x(86)90021-4

Cited by 17 publications

(5 citation statements)

References 22 publications

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“…These results are in accordance with previous experimentations (Bahner et al, 1977;Fisher et al, 1986) that demonstrated the importance of dietary accumulation of chlordecone by aquatic species. Due to its important hydropho-bicity (log K OW = 4.5 (Howard, 1991) to 5.4 (UNEP, 2006)), chlordecone tended to be associated to particulate matter, thus being prone to biomagnification.…”

Section: Contamination Patterns Varied Between the Two Main Contaminantssupporting

confidence: 94%

Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation

Coat¹,

Monti²,

Legendre³

et al. 2011

Environmental Pollution

120

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This paper determines the bioaccumulation and transfer processes of organochlorine pesticides within the stream food web in Guadeloupe (Caribbean). ABSTRACTConcentrations of organochlorine pesticides and stable isotope ratios of nitrogen and carbon were measured in a tropical freshwater ecosystem to evaluate the contamination level of biota and examine the bioaccumulation patterns of pollutants through the food web. Chemical analyses showed a general and heavy contamination of the entire food web. They revealed the strong accumulation of pollutants by juveniles of diadromous fishes and shrimps, as they re-enter the river. The role of ecological factors in the bioaccumulation of pesticides was evaluated. Whereas the most persistent pollutants (chlordecone and monohydro-chlordecone) were related to the organisms diet and habitat, bioaccumulation of β-HCH was only influenced by animal lipid content. The biomagnification potential of chlordecone through the food chain has been demonstrated. It highlighted the importance of trophic transfer in this compound bioaccumulation process. In contrast, bioconcentration by passive diffusion from water seemed to be the main exposure route of biota to β-HCH.

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Section: Contamination Patterns Varied Between the Two Main Contaminantssupporting

confidence: 94%

Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation

Coat¹,

Monti²,

Legendre³

et al. 2011

Environmental Pollution

120

View full text Add to dashboard Cite

show abstract

“…Equation 6, however, is the solution to Equation 5 only when the dietary exposure starts at time zero ( t 0 ) and the fish's initial body concentration is zero (i.e., C f ( t 0 ) = 0). The general solution to Equation 5 is actually Although Equations 5 and 6 frequently have been used to describe the results of laboratory‐exposure studies [53–58], model users should evaluate carefully the conditions associated with such studies before using their results to parameterize Equation 4. To illustrate this assertion, Equation 7 can be redifferentiated to obtain the following exponential equivalent of Equation 5: Using this equation, one can analyze the expected behavior of chemical AEs determined for consecutive time segments of a dietary exposure for which Equations 5 and 6 are assumed to apply.…”

Section: Review Of Dietary Exchange Modelsmentioning

confidence: 99%

Dietary uptake models used for modeling the bioaccumulation of organic contaminants in fish

Barber

2008

Enviro Toxic and Chemistry

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Numerous models have been developed to predict the bioaccumulation of organic chemicals in fish. Although chemical dietary uptake can be modeled using assimilation efficiencies, bioaccumulation models fall into two distinct groups. The first group implicitly assumes that assimilation efficiencies describe the net chemical exchanges between fish and their food. These models describe chemical elimination as a lumped process that is independent of the fish's egestion rate or as a process that does not require an explicit fecal excretion term. The second group, however, explicitly assumes that assimilation efficiencies describe only actual chemical uptake and formulates chemical fecal and gill excretion as distinct, thermodynamically driven processes. After reviewing the derivations and assumptions of the algorithms that have been used to describe chemical dietary uptake of fish, their application, as implemented in 16 published bioaccumulation models, is analyzed for largemouth bass (Micropterus salmoides), walleye (Sander vitreus = Stizostedion vitreum), and rainbow trout (Oncorhynchus mykiss) that bioaccumulate an unspecified, poorly metabolized, hydrophobic chemical possessing a log K(OW) of 6.5 (i.e., a chemical similar to a pentachlorobiphenyl).

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“…Rhead and Perkins [18] demonstrated that for goldfish (Carassius auratus) exposed simultaneously to DDT from two sources, 36 Cl-DDT in food and 14 C-DDT in water, either route of absorption could be the dominant route of accumulation depending on relative DDT concentration over the exposure period. In spot (Leiostomus xanthurus) exposed to Kepone-contaminated water and food, the accumulation from each source was additive [19]. Final body burdens were directly related to feeding rate.…”

Section: Discussionmentioning

confidence: 99%

DIETARY UPTAKE EFFICIENCY OF HCBP IN CHANNEL CATFISH: THE EFFECT OF FISH CONTAMINANT BODY BURDEN—Short Communication

Dabrowska¹,

Fisher²,

Dąbrowski³

et al. 1996

Environ Toxicol Chem

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Abstract-Groups of juvenile channel catfish (Ictalurus punctatus) were exposed for 10 days to control or contaminated sediment, spiked with 14 C-hexachlorobiphenyl (HCBP, 130 g·kg Ϫ1 dry weight), in order to establish a known body burden. At the completion of that exposure, subsamples of fish were taken for HCBP analysis and the remaining fish were transferred to clean media. Each group transferred to clean media was then divided into two subgroups and offered either control or contaminated diet for 4 weeks. The contaminated diet (Tubifex worms) was spiked with 14 C-HCBP (16.6 g·kg Ϫ1 wet weight). Feeding rates of Tubifex were quantified as were fish growth rates and lipid levels. Fish (five specimens) were collected at the beginning of the dietary exposure and after 10, 20, and 30 days of exposure. Average individual growth rate constants were similar in all fish groups and ranged from 0.005 d Ϫ1 to 0.007 d Ϫ1 . Both fish groups fed contaminated Tubifex accumulated HCBP in an apparent linear fashion over the study period. The bioaccumulation factors (BAFs) were 1.38 and 1.66 for accumulation from sediment and uptake from food, respectively. The dietary uptake efficiency for HCBP was found not to be affected by contaminant present in the fish body.

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Bioaccumulation of Kepone by spot (Leiostomus xanthurus): Importance of dietary accumulation and ingestion rate

Cited by 17 publications

References 22 publications

Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation

Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation

Dietary uptake models used for modeling the bioaccumulation of organic contaminants in fish

DIETARY UPTAKE EFFICIENCY OF HCBP IN CHANNEL CATFISH: THE EFFECT OF FISH CONTAMINANT BODY BURDEN—Short Communication

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