Abstract
Twentyfive cyanobacterial blooms in Lake Ladoga and adjacent water bodies were studied in the summer of 1990–1992. Toxicity of the water bloom material for mice was detected in 9 cases. The maximal tolerable doses (MTD) of the material extracted from biomass varied within 3–30 mg kg−1 mouse body weight; 50% lethal doses (LD50) were within 45–125 mg kg−1. Toxic water blooms were registered in Karelian lakes and in the Neva Bay, Gulf of Finland. Cyanobacterial samples collected on the eastern coast of Lake Ladoga proved to be non-toxic. The species identified in toxic bloom material included Anabaena circinalis, A. flos-aquae, A. lemmermannii, Anabaena sp., Aphanizomenonflos-aquae, Gloeotrichia echinulata, G. pisum, Microcystis aeruginosa and Oscillatoria sp. These data suggest that toxic forms of cyanobacteria are widespread in Karelian lakes belonging to the drainage basin of Lake Ladoga.
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© 1996 Kluwer Academic Publishers
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Gromov, B.V., Vepritsky, A.A., Mamkaeva, K.A., Voloshko, L.N. (1996). A survey of toxicity of cyanobacterial blooms in Lake Ladoga and adjacent water bodies. In: Simola, H., Viljanen, M., Slepukhina, T., Murthy, R. (eds) The First International Lake Ladoga Symposium. Developments in Hydrobiology, vol 113. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1655-5_23
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DOI: https://doi.org/10.1007/978-94-009-1655-5_23
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