Spatial variability of mercury and polyunsaturated fatty acids in the European perch (Perca fluviatilis) – Implications for risk-benefit analyses of fish consumption

Strandberg, Ursula; Palviainen, Marjo; Eronen, Aslak; Piirainen, Sirpa; Laurén, Ari; Akkanen, Jarkko; Kankaala, Paula

doi:10.1016/j.envpol.2016.10.050

Cited by 50 publications

(34 citation statements)

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“…In addition, some seston community structure data, particularly that of phytoplankton, are needed to evaluate the potential for efficient trophic transfer of PUFA to upper trophic level consumers. The results also indicate that increasing Gonyostomum biomass in browning boreal lakes may promote heterotrophy at the base of the food web, which in turn may be linked with decreased PUFA content in predatory fish (see Strandberg et al 2016).…”

Section: Discussionmentioning

confidence: 84%

“…We sampled ten lakes along a DOC gradient of 2.8-18.7 mg C/L in eastern Finland. Details on the locations as well as lake morphology and water chemistry and watershed characteristics can be found in Strandberg et al (2016). In each lake, seston samples were collected from three locations between 30 July and 13 September 2013.…”

Section: Methodsmentioning

confidence: 99%

“…Several browning-related factors correlated strongly with lake DOC concentrations (see details in Strandberg et al 2016 and Appendix S1: Table S1). Briefly, a strong negative correlation (r > À0.5) was found between DOC concentrations and lake watersheds and morphometric variables: lake area as percentage of watershed, mean and maximum depth, relative depth percentage (relationship between lake area and maximum depth), and percentage of built environment and waterbodies (ponds, lakes, and rivers) in the watershed.…”

Section: Environmental Variablesmentioning

confidence: 97%

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Increasing concentration of polyunsaturated fatty acids in browning boreal lakes is driven by nuisance alga Gonyostomum

et al. 2020

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Elevated concentrations of dissolved organic carbon (DOC) promote browning of lakes, which alters the physicochemical properties of water and ecosystem functioning. However, browning‐induced changes in basal production of polyunsaturated fatty acids from the n‐3 and n‐6 families (n‐3 and n‐6 PUFA) in lakes are not fully understood. The concentrations of PUFA, which are micronutrients required to maintain growth and reproduction of consumers, have been suggested to either rise or decline in seston as a response to lake browning. Elevated DOC concentrations may also promote bacterial biomass and production and thus potentially increase the concentration of bacterial fatty acids (BAFA) in seston. We analyzed phytoplankton, bacteria and heterotroph biomasses, the taxonomic composition of phytoplankton, and the concentrations and mass fractions of bioseston PUFA, BAFA, eicosapentaenoic, and docosahexaenoic acids in ten boreal lakes in eastern Finland, with DOC concentration ranging from 2.8 to 18.7 mg/L. Our results showed that the abundance of PUFA in seston depended on the responses of phytoplankton biomass and community composition to lake browning. Lake browning increased seston PUFA and BAFA concentrations (expressed as µg/L) but not the contents (expressed as µg/mg bioseston C). Although low DOC lakes had a favorable phytoplankton community (in terms of PUFA content), the phytoplankton biomass in these oligotrophic lakes was so low that the concentration of PUFA remained low compared to high DOC lakes. The increasing concentration of PUFA in bioseston along the DOC gradient was mainly due to the increasing biomass of nuisance alga Gonyostomum semen. However, Gonyostomum may be too large for small‐sized zooplankton to ingest, and thus, the trophic transfer of PUFA may be impaired. The trajectories for lake browning and the basal production of PUFA also may depend on the source of carbon and associated nutrient loading; DOC and nutrient loading from agricultural areas may promote cyanobacteria dominance and decrease PUFA availability in lakes, while DOC runoff from more acidic and nutrient‐poor peatlands may promote Gonyostomum dominance and increase seston PUFA concentration.

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Section: Discussionmentioning

confidence: 84%

Section: Methodsmentioning

confidence: 99%

Section: Environmental Variablesmentioning

confidence: 97%

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Increasing concentration of polyunsaturated fatty acids in browning boreal lakes is driven by nuisance alga Gonyostomum

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“…Olmedo et al [ 72 ] found high content of mercury in some predatory fish, which was, however, below the regulatory maximum level set by the EC Regulation. According to Strandberg et al [ 73 ], the consumption of perch from humic lakes exposed humans to greater risks (higher concentrations of mercury), and provided fewer benefits (lower concentrations of EPA + DHA) than consumption of perch from clear lakes. The total contents of EPA and DHA in 100 g of muscle tissue of the fish from the Vistula Lagoon were as follows: eel—2.11 g; herring—0.62 g; bream—0.33 g; roach—0.19 g; perch—0.16 g; and pikeperch—0.14 g (the recommended daily dose for healthy persons is 0.5 g) [ 74 ].…”

Section: Discussionmentioning

confidence: 99%

Using Rutilus rutilus (L.) and Perca fluviatilis (L.) as Bioindicators of the Environmental Condition and Human Health: Lake Łańskie, Poland

Łuczyńska

Paszczyk

Luczynski

et al. 2020

IJERPH

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The aim of this study was to determine the mercury content and fatty acids profile in roach (Rutilus rutilus L.) and European perch (Perca fluviatilis L.) from Lake Łańskie (Poland). Mercury content was higher in the muscles than other organs in both species (p < 0.05). Mercury accumulates along the food chain of the lake’s ecosystem. The value of the bioconcentration factor (BCF) indicated that Hg had accumulated in the highest amounts in muscles and in the other organs as follows: muscles > liver > gills > gonads. The metal pollution index (MPI) and target hazard quotient (THQ) were below 1, which means that these fish are safe for consumers. The values of HIS, GSI and FCF indicators show that both species of fish can be good indicators of water quality and food contamination. There were few differences between fatty acid content in the muscles of perch and roach. Contents of fatty acids having an undesirable dietary effect in humans (OFA—hypercholesterolemic fatty acids) were lower compared to hypocholesterolemic fatty acids (DFA, i.e., the desirable ones). In addition, the lipid quality indices AI and TI in the muscles of fish were at 0.40 and 0.22 (perch) and at 0.35 and 0.22 (roach), respectively. On this basis, it can be concluded that the flesh of the fish studied is beneficial from the health point of view.

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“…Поступление загрязняющих веществ в водные экосистемы продолжается, несмотря на совершенствование технологических процессов и наметившуюся в последние десятилетия тенденцию к снижению антропогенного влияния на окружающую среду (Моисеенко, 2009;Моисеенко и Гашкина, 2016;Hrabik and Watras, 2002). Проблема накопления ртути (Hg) в рыбе остается актуальной для многих водоемов северной части Европы (Strandberg et al, 2016). Крупные водоемы России, представляющие собой не только транспортные артерии, источники минеральных ресурсов, объекты водоснабжения, рекреации, но и ресурсную базу спортивного и промыслового рыболовства, влияющую на формирование рациона питания населения, требуют особо пристального изучения.…”

Section: Introductionunclassified

Spatial-temporal variability of mercury content in the river perch Perca fluviatilis Linnaeus, 1758 (Perciformes: Percidae) of the Rybinsk Reservoir at the turn of the XX–XXI centuries

Gremyachikh¹,

Lozhkina²,

Komov³

2019

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Проведено исследование содержания ртути (Hg) в мышечной ткани речного окуня (Perca fluviatilis Linnaeus, 1758) из разных плесов Рыбинского водохранилища в период с 1997 по 2012 г. Концентрации Hg в мышцах были выше у окуня из Шекснинского и Волжского плесов, ниже-из Главного и Моложского, так же, как и Hg в донных отложениях из мест обитания рыб. Отмечена зависимость значения показателя от размеров рыб и тенденция к его увеличению в последние десятилетия. Определено содержание ртути в различных органах и тканях окуня. Установлена положительная корреляционная зависимость между значениями показателя во всех исследованных образцах с концентрацией металла в мышечной ткани, в которой она была самой высокой (до 0.91 мг/кг сырой массы). Основная доля аккумулированной рыбой ртути приходится на мышцы.

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Spatial variability of mercury and polyunsaturated fatty acids in the European perch (Perca fluviatilis) – Implications for risk-benefit analyses of fish consumption

Cited by 50 publications

References 53 publications

Increasing concentration of polyunsaturated fatty acids in browning boreal lakes is driven by nuisance alga Gonyostomum

Increasing concentration of polyunsaturated fatty acids in browning boreal lakes is driven by nuisance alga Gonyostomum

Using Rutilus rutilus (L.) and Perca fluviatilis (L.) as Bioindicators of the Environmental Condition and Human Health: Lake Łańskie, Poland

Spatial-temporal variability of mercury content in the river perch Perca fluviatilis Linnaeus, 1758 (Perciformes: Percidae) of the Rybinsk Reservoir at the turn of the XX–XXI centuries

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