Dietary transfer of fluoranthene from an estuarine oligochaete (Monopylephorus rubroniveus) to grass shrimp (Palaemonetes pugio): Influence of piperonyl butoxide

Abstract

The objective of this study was to determine the potential for dietary transfer of sediment-associated fluoranthene from tubificid oligochaetes (Monopylephorus rubroniveus) to grass shrimp (Palaemonetes pugio). Grass shrimp, either in the presence or absence of sublethal waterborne concentrations of the metabolic inhibitor, piperonyl butoxide (PBO), were fed fluoranthene-dosed oligochaetes for 5-days. All grass shrimp bioaccumulated fluoranthene; however, bioaccumulation was 3X higher in the presence of PBO. Trophic transfer coefficients (TTCs) were 0.02 and 0.01 in the presence and absence of PBO, respectively. Following the 5-day accumulation period, shrimp in both treatments were allowed to depurate for 3 days. Depuration rates were significantly higher in PBO-exposed shrimp. These results demonstrated that sediment-associated fluoranthene can be transferred through the diet from oligochaetes to grass shrimp, and the presence of PBO enhanced fluoranthene bioaccumulation. However, the comparatively low TTCs suggest that biomagnification of fluoranthene in estuarine food webs is low.

A review of the tissue residue approach for organic and organometallic compounds in aquatic organisms

“…To illustrate the utility of this analysis, measured acute and chronic CBR data were compiled for pentachlorobenzene and fluoranthene (Table 2). Pentachlorobenzene was chosen as representative of a poorly metabolized baseline toxicant, while fluoranthene was included to reflect a compound with similar hydrophobicity that is susceptible to biotransformation by invertebrates and higher organisms (Filipowicz et al 2007). As a result, CBR data for fluoranthene were expressed in terms of both parent compound as well as total radioactivity (parent + metabolites) whenever this information could be deduced from reported data.…”

Trophic Transfer of Micropollutants and Their Metabolites in an Urban Riverine Food Web

“…Laboratory experiments have shown that PAHs are transferred from prey to predator 7 and undergo biomagnification along the food chain 8,9 , whereas field-based studies have described trophic dilution of PAHs 10-12 and phthalate diesters 13,14 , with predators being less contaminated than their prey in marine ecosystems.…”

“…Concerning micropollutants with a high metabolic transformation rate, some discrepancies have been highlighted among studies investigating their trophodynamic behavior. Laboratory experiments have shown that PAHs are transferred from prey to predator and undergo biomagnification along the food chain, , whereas field-based studies have described the trophic dilution of PAHs − and phthalate diesters, , with predators being less contaminated than their prey in marine ecosystems.…”

Endobenthic Invertebrates as Reference Species

“…Among organic contaminants, sediment-associated fluoranthene can be transferred through the diet as shown for grass shrimp P. pugio fed tubificid oligochaetes Monopylephorus rubroniveus (Filipowicz et al, 2007). Using the invertebrates L. variegatus or C. riparius as prey, Carrasco Navarro et al (2012,2013) have shown a trophic transfer of pyrene metabolites to predators Gammarus setosus and Salmo trutta.…”