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Trophic mercury biomagnification patterns in two European rivers following introduction of invasive round gobies (Neogobius melanostomus)
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SYSNO ASEP 0532202 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Trophic mercury biomagnification patterns in two European rivers following introduction of invasive round gobies (Neogobius melanostomus) Tvůrce(i) Jurajda, Pavel (UBO-W) RID, SAI, ORCID
Všetičková, Lucie (UBO-W) RID, SAI
Švecová, H. (CZ)
Kolářová, J. (CZ)
Jurajdová, Zdenka (UBO-W) RID, SAI
Janáč, Michal (UBO-W) RID, ORCID, SAI
Roche, Kevin (UBO-W) RID, SAI, ORCIDCelkový počet autorů 7 Číslo článku 125817 Zdroj.dok. Limnologica. - : Elsevier - ISSN 0075-9511
Roč. 84, September (2020)Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Bioaccumulation ; Dreissena polymorpha ; Dyje ; Elbe ; Macroinvertebrates ; Total mercury Vědní obor RIV EH - Ekologie - společenstva Obor OECD Marine biology, freshwater biology, limnology CEP GAP505/11/1768 GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UBO-W - RVO:68081766 UT WOS 000579410600005 EID SCOPUS 85090027731 DOI 10.1016/j.limno.2020.125817 Anotace In this study, we examine multiple trophic levels in two Central European rivers (the Dyje and Elbe) to assess whether round goby invasion has changed the pattern of total mercury (Hg) transfer through trophic levels. In the absence of comparable historical data, we also examined levels for European gudgeon, a native benthic species occupying a similar trophic niche to round goby. Our data clearly indicated bioaccumulation of total Hg with increasing trophic position in both rivers. Patterns were very similar in both rivers, with no significant difference in total Hg accumulation between round goby and gudgeon. Biomagnification factors were high for gobies (highest in the Elbe) and relatively low for perch (higher in the Dyje), with levels for burbot (Dyje only) similar to those for gobies. Goby dietary analysis revealed a clear preference for benthic macroinvertebrates in both rivers, with zebra mussels taken only occasionally. Both perch and burbot had an omnivorous diet, effectively “diluting” total Hg accumulation from benthivorous fish. Our results indicate that goby invasion has not altered the pattern of trophic contaminant transfer and, consequently, has not increased threat levels to top predators and humans. Our results corroborate findings from around Europe suggesting a preference for macroinvertebrates over zebra mussels and provide further evidence for case-specificity regarding potential round goby impacts on recipient systems. Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2021 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0075951120301791?via%3Dihub
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