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Toxic Fresh-water Algae

Ingram, William Marcus ; Prescott, G. W.

The American midland naturalist, 1954-07, Vol.52 (1), p.75-87 [Periódico revisado por pares]

University of Notre Dame

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  • Título:
    Toxic Fresh-water Algae
  • Autor: Ingram, William Marcus ; Prescott, G. W.
  • Assuntos: Algae ; Anabaena ; Animals ; Brackish ; Coelosphaerium ; Cyanobacteria ; Cyanophyceae ; Freshwater ; Gastroenteritis ; Gloeotrichia ; Killing ; Lakes ; Microcystis ; Nodularia ; Poisoning ; Surface water ; Toxicity ; Toxins
  • É parte de: The American midland naturalist, 1954-07, Vol.52 (1), p.75-87
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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  • Descrição: Outbreaks of human gastroenteritis have not been positively traced to algae. Algae that have been responsible for mammalian, avarian, and fish deaths through some toxic action are all to be found in the blue-green algal group, the Cynapophyta. The Cyanophyta species that have been associated with animal deaths belong in the genera: Microcystis, Aphanizomenon, Anabaena, Nodularia, Coelosphaerium, and Gloeotrichia. Often when deaths of animals occur, a wind has been reported blowing, thus tending to concentrate algae in lee-shore areas. Cattle that drink only small quantities of water containing Microcystis may not die but do show a series of illness symptoms, one of which is a drop in milk yield. Symptomatic treatment has been recommended by Steyn (1945) for cattle poisoned by algae. Various writers have made reference to several toxic substances associated with blue-green algae. Substances that are toxic enough to cause illness or death in animals are not present in all blue-green algae. Water in which certain blue-green algae have bloomed may produce death in mammals and fish when the algal cells themselves are excluded. The toxic material from certain algae may survive the laboratory equivalent of water treatment, using alum coagulation, filtration and chlorination. It may survive activated carbon treatment in amounts corresponding to that used in water treatment plants, and after massive treatment with Norite A.
  • Editor: University of Notre Dame
  • Idioma: Inglês
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