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Toxicité du cuivre vis à vis de Microcystis aeruginosa Kütz. et d' Aphanizomenon flos‐aquae Ralfs
Author(s) -
Bertru Georges,
Saout Marc Le,
Gueune Yvon
Publication year - 1986
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19860710612
Subject(s) - aphanizomenon , microcystis aeruginosa , copper , toxicity , chemistry , biology , cyanobacteria , bacteria , anabaena , organic chemistry , genetics
We studied the toxicity of copper on Microcystis aeruginosa and Aphanizomenon flos‐aquae. The toxicity phenomena can be described by the survival dose relationship which allows us to define the three parameters: threshold concentration ( Cs ), sensitivity ( k ) and a NL. 50%. The latter corresponds to the copper concentration which reduces the number of cells at the end of the exponential phase by 50%. A. flos‐aquae is very clearly less tolerant than M. aeruginosa to copper. Viable cell counts based on electron transport activity showed that M. aeruginosa cultures can detoxify copper.