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Deposit-feeders accumulate the cyanobacterial toxin nodularin
Stockholm University, Faculty of Science, Department of Systems Ecology.
2011 (English)In: Harmful Algae, ISSN 1568-9883, E-ISSN 1878-1470, Vol. 12, 77-81 p.Article in journal (Refereed) Published
Abstract [en]

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.
Keyword [en]
Benthic-pelagic coupling, Bioaccumulation, Ecosystem effects, Food web, Incorporation
National Category
Biological Sciences
URN: urn:nbn:se:su:diva-74041DOI: 10.1016/j.hal.2011.09.003ISI: 000299146400008OAI: diva2:506703

authorCount :2

Available from: 2012-02-29 Created: 2012-02-28 Last updated: 2012-11-09Bibliographically approved

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Karlson, Agnes M. L.
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