Toxicity and isolation of the cyanobacterium Nodularia spumigena from the southern Baltic Sea in 1986 |
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Authors: | K Sivonen K Kononen A -L Esala S I Niemelä |
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Institution: | (1) Department of Microbiology, University of Helsinki, SF-00710 Helsinki, Finland;(2) Finnish Institute of Marine Research, P.O.Box 33, SF-00931 Helsinki, Finland |
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Abstract: | Three water bloom samples were collected in August 1986 from the southern Baltic Sea. Acute toxicity of the samples was determined by mouse bioassay and the toxins were further studied by HPLC. The bloom samples contained equal amounts of cyanobacteria Nodularia spumigena and Aphanizomenon flos-aquae and were hepatotoxic. Two hepatotoxic Nodularia spumigena strains were isolated from the samples. The isolates produce a toxic peak indistinguishable from the bloom material in the HPLC analysis. The toxicity of the fractions was verified by mouse bioassay. Thus the toxicity of the bloom samples was in all likelihood caused by Nodularia spumigena. |
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Keywords: | Cyanobacterium Nodularia spumigena hepatotoxicity Baltic Sea algal blooms |
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