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

Wallace, Joshua S.; Blersch, David M.

doi:10.1016/j.envpol.2015.07.023

Cited by 10 publications

(2 citation statements)

References 63 publications

(85 reference statements)

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“…Similar population declines of SMB have not been reported in the Great Lakes; however, contaminant exposure and bioaccumulation (Choy et al, 2017;Wallace & Blersch, 2015) have been. SMB and largemouth bass (Micropterus salmoides) males sampled at other AOCs in the Great Lakes region have exhibited biomarkers of exposure to estrogenic endocrine disrupting chemicals (EEDCs) including vitellogenin induction and a low to moderate prevalence and severity of TO (Blazer et al, 2018).…”

Section: Introductionsupporting

confidence: 55%

Reproductive health and endocrine disruption in smallmouth bass (Micropterus dolomieu) from the Lake Erie drainage, Pennsylvania, USA

Walsh

Rafferty

Gordon

et al. 2021

Environ Monit Assess

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Smallmouth bass Micropterus dolomieu were sampled from three sites within the Lake Erie drainage (Elk Creek, Twentymile Creek, and Misery Bay, an embayment in Presque Isle Bay). Plasma, tissues for histopathological analyses, and liver and testes preserved in RNALater® were sampled from 30 smallmouth bass (of both sexes) at each site. Liver and testes samples were analyzed for transcript abundance with Nanostring nCounter® technology. Evidence of estrogenic endocrine disruption was assessed by the presence and severity of intersex (testicular oocytes; TO) and concentrations of plasma vitellogenin in male fish. Abundance of 17 liver transcripts associated with reproductive function, endocrine activity, and contaminant detoxification pathways and 40 testes transcripts associated with male and female reproductive function, germ cell development, and steroid biosynthesis were also measured. Males with a high rate of TO (87–100%) and plasma vitellogenin were noted at all sites; however, TO severity was greatest at the site with the highest agricultural land cover. Numerous transcripts were differentially regulated among the sites and patterns of transcript abundance were used to better understand potential risk factors for estrogenic endocrine disruption. The results of this study suggest endocrine disruption is prevalent in this region and further research would benefit to identify the types of contaminants that may be associated with the observed biological effects.

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Section: Introductionsupporting

confidence: 55%

Reproductive health and endocrine disruption in smallmouth bass (Micropterus dolomieu) from the Lake Erie drainage, Pennsylvania, USA

Walsh

Rafferty

Gordon

et al. 2021

Environ Monit Assess

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“…In the present study, we found that although Hg biomagnification in invaded and uninvaded systems was similar, there was some evidence of competition between invasive pearl dace and native brook trout. The presence of an additional forage fish species could theoretically increase predator fish contaminant concentrations by introducing an additional trophic level into the food web (Johnston et al 2003;Wallace and Blersch 2015), but our study demonstrates that the primary roles of the native and invasive species in La Mauricie National Park lakes were not simply predator and prey. Competition between brook trout and pearl dace would result in similar THg concentrations for the 2 species, as we observed for most individuals.…”

Section: Discussionmentioning

confidence: 70%

Effects of Non‐native Fish on Lacustrine Food Web Structure and Mercury Biomagnification along a Dissolved Organic Carbon Gradient

Barst

Hudelson

Lescord

et al. 2020

Enviro Toxic and Chemistry

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Although the introduction of non-native fish species has been shown to alter trophic ecology in aquatic ecosystems, there has been limited research on how invasive species alter methylmercury (MeHg) biomagnification in lacustrine food webs. We sampled surface water and biota from 8 lakes in Quebec, Canada, spanning a range of dissolved organic carbon (DOC) concentrations (2.9-8.4 mg/L); 4 lakes were inhabited by native brook trout (Salvelinus fontinalis), and the remaining lakes contained brook trout and a non-native fish, Allegheny pearl dace (Margariscus margarita). Periphyton, zooplankton, macroinvertebrates, and fish were analyzed for: 1) stable carbon (δ 13 C) and nitrogen (δ 15 N) isotope ratios to delineate food webs, and 2) total Hg (THg) or MeHg. Compared with the brook trout from reference lakes, fish from invaded lakes had higher length-standardized THg concentrations as well as a narrower dietary range and elevated trophic level, inferred from unadjusted δ 13 C and δ 15 N values, respectively. The rate of Hg biomagnification was similar across invaded and reference lakes, implying little effect of the invasive fish on the trophic transfer of MeHg. Despite differences in food web structure due to pearl dace invasion, DOC was the strongest predictor of brook trout THg levels for all lakes, suggesting that underlying environmental factors exerted a stronger influence on brook trout THg concentrations than the presence of a nonnative forage fish.

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Impacts of Invasive Species in the Laurentian Great Lakes

DeRoy

MacIsaac

2020

The Handbook of Environmental Chemistry

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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

Cited by 10 publications

References 63 publications

Reproductive health and endocrine disruption in smallmouth bass (Micropterus dolomieu) from the Lake Erie drainage, Pennsylvania, USA

Reproductive health and endocrine disruption in smallmouth bass (Micropterus dolomieu) from the Lake Erie drainage, Pennsylvania, USA

Effects of Non‐native Fish on Lacustrine Food Web Structure and Mercury Biomagnification along a Dissolved Organic Carbon Gradient

Impacts of Invasive Species in the Laurentian Great Lakes

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