title: Dynamic modeling predicts continued bioaccumulation of polybrominated diphenyl ethers (PBDEs) in smallmouth bass (Micropterus dolomiu) post phase-out due to invasive prey and shifts in predation.
abstract: Unprecedented food chain links between benthic and pelagic organisms are often thought to disrupt traditional contaminant transport and uptake due to changes in predation and mobilization of otherwise sequestered pollutants. A bioaccumulation model for polybrominated diphenyl ethers (PBDEs) is developed to simulate increases in biotic congener loads based upon trophic transfer through diet and gill uptake for a Lake Erie food chain including two invasive species as a benthic-pelagic link. The model utilizes species-specific bioenergetic parameters in a four-level food chain including the green alga Scenedesmus quadricauda, zebra mussels (Dreissena polymorpha), round goby (Appollonia melanostoma), and the smallmouth bass (Micropterus dolomiu). The model was calibrated to current biotic concentrations and predicts an increase in contaminant load by almost 48% in the upper trophic level in two years. Validation to archival data resulted in <2% error from reported values following a two-year simulation.
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. Electronic address: jswallac@buffalo.edu.
authors.forename: Joshua S
authors.initials: JS
authors.lastname: Wallace
authors.affiliation: Biosystems Engineering Department, Auburn University, Auburn, AL 36849, USA. Electronic address: dmb0040@auburn.edu.
authors.forename: David M
authors.initials: DM
authors.lastname: Blersch
mesh_terms: D000818:Animals; D001492:Bass / Q000378:metabolism*; D049875:Dreissena / Q000378:metabolism; D005411:Flame Retardants / Q000032:analysis / Q000378:metabolism*; D020387:Food Chain; D055768:Halogenated Diphenyl Ethers / Q000032:analysis / Q000378:metabolism*; D008954:Models, Biological; D010473:Perciformes / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism
chemical_list: D005411:Flame Retardants; D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical
keywords: Bioaccumulation; Brominated flame retardants (BFRs); Dynamic model; Lake Erie; Polybrominated diphenyl ethers (PBDEs); Trophic transfer