6533b823fe1ef96bd127ec19

RESEARCH PRODUCT

Bioaccumulation of hepatotoxins : A considerable risk in the Latvian environment

Ingrida PurinaIeva BārdaHarri KankaanpääJussi MeriluotoMaija BalodeOlli Sjövall

subject

Baltic StatesCyanobacteriatoksiinitHealth Toxicology and Mutagenesishealth risksFresh WaterFlounderToxicologyWater columnWater Pollutantsta116riskitkalatbiologyEcologyFishesHepatotoxinGeneral Medicineta3142selkärangattomatPollutionRiianlahtibioaccumulationBioaccumulationmaksamyrkytEnvironmental MonitoringmyrkytMicrocystinsOceans and SeasBacterial Toxinsta1172hepatotoxinsCyanobacteriaPeptides CyclicDreissenaAquatic organismsAnimalsInvertebratefishBrackish waterbiology.organism_classificationinvertebratessimpukatLatviaBivalviaFisheryLakesItämerikertyminenEnvironmental scienceterveysriskit

description

Abstract The Gulf of Riga, river Daugava and several interconnected lakes around the City of Riga, Latvia, form a dynamic brackish-freshwater system favouring occurrence of toxic cyanobacteria. We examined bioaccumulation of microcystins and nodularin-R in aquatic organisms in Latvian lakes, the Gulf of Riga and west coast of open Baltic Sea in 2002–2007. The freshwater unionids accumulated toxins efficiently, followed by snails. In contrast, Dreissena polymorpha and most lake fishes (except roach) accumulated much less hepatotoxins. Significant nodularin-R concentrations were detected also in marine clams and flounders. No transfer of nodularin-R and microcystins between lake and brackish water systems took place. Lake mussels can transfer hepatotoxins to higher organisms, and also effectively remove toxins from the water column. Obvious health risks to aquatic organisms and humans are discussed.

yearjournalcountryeditionlanguage
2014-07-16Environmental Pollution
10.1016/j.envpol.2014.10.024https://doi.org/10.1016/j.envpol.2014.10.024