Water Blooms and Toxins Produced by Cyanobacteria in the Lower Suzdalskoeskoe Lake (Saint-Petersburg, Russia)

摘要

The analysis of the freeze-dried phytoplankton biomass extracts collected during the water bloom in the Lower Suzdalskoe Lake (St. Petersburg) was performed using a high efficiency liquid chromatography method (HPLC). The analysis revealed the presence of hepatotoxic microcystin LA and LF in the biomass, as well as other biologically active compounds protease inhibitors microcin SF608 and anabenopeptids A and F. Dangerous phytotoxins were not found in the biomass extract of the plankton dominant Planktothrix agardhii (Gout) Anagn. et Kom. CALU1306. The presence of microcystins in the biomass is apparently due to the populations of other cyanobacteria (Microcystis (Kutz.) Elenk., Anabaena Bory, etc.). It has been concluded that the water bloom conditions require the effective control of environmental factors that cause eutrophication using chromatographic techniques, immunosorbent assays, and protein phosphatase tests.