Toxic microcystis aeruginosa in Lake Velencei

A. Törökné, Erzsébet László, Ingrid Chorus, Kaarina Sivonen, Francisco A R Barbosa

Research output: Article

4 Citations (Scopus)

Abstract

Lake Velencei is a shallow lake in Hungary. The first cyanobacterial bloom of Microcystis aeruginosa appeared in the lake in 1991. This cyanobacterial species was also found earlier but blooms were not recorded. The toxins of M. aeruginosa were studied in Lake Velencei in 1992. The present study deals with the toxicity of a M. aeruginosa biomass of different origin detected by intraperitoneal (ip.) mouse assay, Thamnotoxkit F(TM) microbiotest, and toxin analysis by high-performance liquid chromatography (HPLC). The biomass was collected by plankton net and the isolated strains were cultured from sediments and from bloom material. Minimal lethal doses (MLD) by ip. mouse assay ranged from 20 to 50 mg/kg-1. Comparing the results from 1992 and 1997-1998, no change in the toxicity of M. aeruginosa was detected. According to the HPLC analysis the combination of microcystins varied in a narrow range with microcystin-LR found in each sample. The cyanobacterial blooms caused by M. aeruginosa in Lake Velencei considerably decreased, though it remained in the sediment with the same toxicity. The Thamnotoxkit F(TM) microbiotest was an alternative method for detecting the cyanotoxins. (C) 2000 by John Wiley and Sons, Inc.

Original languageEnglish
Pages (from-to)554-557
Number of pages4
JournalEnvironmental Toxicology
Volume15
Issue number5
DOIs
Publication statusPublished - 2000

Fingerprint

Microcystis
Poisons
Lakes
algal bloom
lake
Toxicity
High performance liquid chromatography
toxicity
Biomass
toxin
liquid chromatography
Assays
Sediments
High Pressure Liquid Chromatography
Microcystins
assay
Plankton
Hungary
biomass
sediment

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Water Science and Technology
  • Toxicology
  • Health, Toxicology and Mutagenesis
  • Pollution

Cite this

Toxic microcystis aeruginosa in Lake Velencei. / Törökné, A.; László, Erzsébet; Chorus, Ingrid; Sivonen, Kaarina; Barbosa, Francisco A R.

In: Environmental Toxicology, Vol. 15, No. 5, 2000, p. 554-557.

Research output: Article

Törökné, A. ; László, Erzsébet ; Chorus, Ingrid ; Sivonen, Kaarina ; Barbosa, Francisco A R. / Toxic microcystis aeruginosa in Lake Velencei. In: Environmental Toxicology. 2000 ; Vol. 15, No. 5. pp. 554-557.
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