Evaluation of Multixenobiotic Resistance in Dreissenid Mussels as a Screening Tool for Toxicity in Freshwater Sediments

Ács, András; Imre, Kornélia; Kiss, Gy.; Csaba, Judit; Győri, János; Vehovszky, Ágnes; Farkas, Anna

doi:10.1007/s00244-015-0150-y

Cited by 6 publications

(3 citation statements)

References 59 publications

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“…In interpreting the time related changes in biomarker levels of dreissenids populating the pristine site, first we relied on the knowledge that this location is safe of anthropogenic impact. This fact was demonstrated by the trace metal datasets repeatedly recorded over time in this area, which always fell within the regional geochemical background (Hlavay and Polyák, 2002;Nguyen et al, 2005;Ács et al, 2015). Similarly for PAHs, their concentration in the sediment was always very low and did not significantly differ from the values characteristic for open areas of the lake (Kiss et al, 1997;Kiss et al, 2001;Bodnár et al, 2005;Ács et al, 2015).…”

Section: Discussionsupporting

confidence: 54%

“…This fact was demonstrated by the trace metal datasets repeatedly recorded over time in this area, which always fell within the regional geochemical background (Hlavay and Polyák, 2002;Nguyen et al, 2005;Ács et al, 2015). Similarly for PAHs, their concentration in the sediment was always very low and did not significantly differ from the values characteristic for open areas of the lake (Kiss et al, 1997;Kiss et al, 2001;Bodnár et al, 2005;Ács et al, 2015). Secondly, we considered the basic knowledge that contamination by metals and polycyclic hydrocarbons in aquatic organisms above certain level may: a. exceed the antioxidant capacity of the defence system; b. decrease the function of key antioxidant proteins and enzymes.…”

Section: Discussionmentioning

confidence: 54%

“…Pollution surveys performed over decades have outlined an overall low contamination of the lake, with low spatial variability and insignificant seasonal pattern (Kiss et al, 1997;Kiss et al, 2001;Hlavay and Polyák, 2002;Bodnár et al, 2005;Nguyen et al, 2005). The pollution of harbour areas was evidenced only by significantly higher contaminant burdens in bottom sediments compared to open areas Kiss et al, 2001;Nguyen et al, 2005;Bodnár et al, 2005;Ács et al, 2015). Within harbours, significant variability in the contamination of the sediment compartment was never recorded, which results from the fact that these harbours are characterized by very similar usage.…”

Section: Discussionmentioning

confidence: 99%

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Interspecies comparison of selected pollution biomarkers in dreissenid spp. inhabiting pristine and moderately polluted sites

Farkas

Ács

Vehovszky

et al. 2017

Science of The Total Environment

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Stress biomarkers, which can outline impacts of contaminants in aquatic biota at the biochemical level, are increasingly used as early warning tools in environmental monitoring. Reliable biomarker based assessment schemes, however, request appropriate knowledge of baseline levels of selected endpoints, and the potential influence of a range of natural influencing factors (both abiotic and biotic) as well. In this study, we examined the interspecies variability of various biomarkers (metallothioneins (MT), ethoxyresorufin-Odeethylase activity (EROD), lipid peroxidation (LPO), DNA strand breaks (DNA_sb), vitellogenin-like proteins (Vtg)) in Dreissena polymorpha and Dreissena bugensis inhabiting either pristine-or moderately impacted sites of Lake Balaton (Hungary). Levels of all biomarkers considered revealed low interspecies variability in the two dreissenid species at all sampling sites, with consistently higher (but statistically insignificant) values in Dreissena polymorpha. Levels of all biomarkers varied within the two investigated seasons, with significant influence of the reproduction cycle particularly on the levels of metallothioneins and vitellogenin-like proteins. Each biomarker considered was elevated by October, with significantly higher values in the mussels inhabiting harbours. Insignificant spatial and temporal variability in the general health indicators (condition index, total protein content) of dreissenids was observed, which, in parallel with evident rise in biomarker levels, apparently suggest that the anthropogenic impacts in harbours affect mussel fitness yet at sub organismal level. Our data might serve useful basis for future environmental monitoring surveys, especially in habitats where the progressive replacement of Dreissena polymorpha by Dreissena bugensis is taking place, as the interspecies variability in susceptibility to chemical stress of the two species is well comparable.

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