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  1. Cattle mortality attributed to the toxic cyanobacterium Cylindrospermopsis raciborskii in an outback region of North Queensland.

    Article - En anglais

    Three cows and ten calves were found dead near a farm dam on a cattle property at McKinlay in northwest Queensland, Australia.

    At that time, the dam contained an algal bloom which was identified as a monoculture of the cyanobacterium C. raciborskii, Histological examination of the liver of a calf carcass showed signs consistent with poisoning caused by hepatotoxin.

    The hepatotoxic alkaloid cylindrospermopsin was detected in material harvested from the dam (4.1 x 10-15 g cell-1) and in a pure culture of an isolate from the bloom (4.4 x 10 - 15 g cell - 1).

    An extract of this material was lethal to mice after 24 h at an intraperitoneal concentration of 153 mg kg-1.

    This appears to be the first report of animal poisonings attributed to the cyanobacterium C. raciborskii.

    Mots-clés Pascal : Bétail, Toxicité, Mortalité, Voie orale, Pollution eau, Bloom, Foie, Cyanobacteria, Bactérie, Bovin, Artiodactyla, Ungulata, Mammalia, Vertebrata, Alcaloïde, Queensland, Australie, Océanie, Milieu eau douce, Lac artificiel, Effet polluant, Toxicologie, Toxine, Cylindrospermopsis raciborskii, Cylindrospermopsine

    Mots-clés Pascal anglais : Livestock, Toxicity, Mortality, Oral administration, Water pollution, Bloom, Liver, Cyanobacteria, Bacteria, Bovine, Artiodactyla, Ungulata, Mammalia, Vertebrata, Alkaloid, Queensland, Australia, Oceania, Freshwater environment, Artificial lake, Pollutant effect, Toxicology, Toxin

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0327662

    Code Inist : 002B03M03. Création : 16/11/1999.