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Harmful phytoplankton blooms and fish mortality in a eutrophicated reservoir of northeast Brazil BABT
Chellappa,Naithirithi Tiruvenkatachary; Chellappa,Sarah Laxhmi; Chellappa,Sathyabama.
The aim of this work was to study the eutrophication in the tropical freshwater ecosystems and the consequent cyanobacterial bloom formation and economical damage to fisheries and harmful effects to public health. Mass fish mortality due to toxin producing cyanobacterial blooms was registered during December 2003 in Marechal Dutra Reservoir, Acari/RN, Northeast Brazil. Phytoplankton and fish samplings were carried out on alternate days during the episode of fish mortality and monthly during January to June 2004. The cyanobacterial toxin was identified and quantified from the seston samples and liver of the dead fishes using the standard HPLC method. The results indicated that the toxic blooms of Cylindrospermopsis raciborskii and Microcystis aeruginosa...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Harmful algal blooms; Anthropogenic activity; Fish mortality; Reservoir; Public health.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000400022
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