Abstract
The accumulation ofMicrocystis aeruginosa hepatotoxins (microcystin-LR) in the phantom midge larvaChaoborus was studied in a 16 d laboratory experiment. In the cyanobacteria treatment,Chaoborus larvae were fed withDaphnia pulex juveniles which had been feeding for two days on a mixture ofScenedesmus obtusiusculus and toxicMicrocystis aeruginosa. In the control treatment theChaoborus larvae were offeredD. pulex raised onScenedesmus only. An HPLC analysis failed to detect any cyanobacteria toxin in theChaoborus larvae, indicating that the toxin was metabolized or excreted byD. pulex andChaoborus. There was a statistically significant increase in mortality of larvae in the cyanobacteria treatment, but no difference between treatments in pupation success ofChaoborus was observed.
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Laurén-Määttä, C., Hietala, J., Reinikainen, M. et al. DoMicrocystis aeruginosa toxins accumulate in the food web: a laboratory study. Hydrobiologia 304, 23–27 (1995). https://doi.org/10.1007/BF02530700
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DOI: https://doi.org/10.1007/BF02530700