A survey of toxicity of cyanobacterial blooms in Lake Ladoga and adjacent water bodies |
| |
Authors: | Boris V Gromov Alexey A Vepritsky Kira A Mamkaeva Lyudmila N Voloshko |
| |
Institution: | (1) Biological Institute of St. Petersburg University, Oranienbaumskoye sch. 2, Stary Peterhof, 198904 St. Petersburg, Russia |
| |
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. |
| |
Keywords: | Algal bloom cyanobacteria toxicity maximal tolerable dose (MTD) lethal dose LD50 |
本文献已被 SpringerLink 等数据库收录! |
|