Deposit-feeders accumulate the cyanobacterial toxin nodularin
2011 (English)In: Harmful Algae, ISSN 1568-9883, E-ISSN 1878-1470, Vol. 12, 77-81 p.Article in journal (Refereed) Published
Blooms of toxic cyanobacteria may potentially affect food web productivity and even be a human health hazard. In the Baltic Sea, regularly occurring summer blooms of nitrogen-fixing cyanobacteria are often dominated by Nodularia spumigena, which produces the potent hepatotoxin nodularin. Evidence of sedimentation of these blooms indicates that benthic fauna can be exposed to nodularin. In a one month experiment, we simulated the settling of a summer bloom dominated by N. spumigena in sediment microcosms with three species of sediment-dwelling, deposit-feeding macrofauna, the amphipods Monoporeia affinis and Pontoporeia femorata and the bivalve Macoma balthica, and analyzed nodularin in the animals by HPLC-ESI-MS (high-performance liquid chromatography-electrospray ionization-mass spectrometry). We found nodularin in quantities of 50-120 ng g(-1) DW. The results show that deposit-feeding macrofauna in the Baltic Sea may contribute to trophic transfer of nodularin.
Place, publisher, year, edition, pages
2011. Vol. 12, 77-81 p.
Benthic-pelagic coupling, Bioaccumulation, Ecosystem effects, Food web, Incorporation
IdentifiersURN: urn:nbn:se:su:diva-74041DOI: 10.1016/j.hal.2011.09.003ISI: 000299146400008OAI: oai:DiVA.org:su-74041DiVA: diva2:506703
authorCount :22012-02-292012-02-282012-11-09Bibliographically approved