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Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon Biol. Res.
Bustos-Obregon,Eduardo; Vargas,Álvaro.
A chronic toxicity bioassay was conducted with the microcrustacean Artemia salina as the testing organism for the toxic organophosphate diazinon in order to determine if the species is an appropriate indicator of pollution in aquatic environments. Tests of animal exposure to different concentrations of the toxicant were performed for 24, 48 and 72 hours after larvae hatching. Registered mortality data was used to obtain the lethal dose 50 (LD50) of the organophosphate for each exposure time, considering the immobilization of A. salina larvae as the mortality parameter. The lethal concentration (LD50) in the same exposure times was calculated by evaluating morphological changes on the three initial stages of larval development. Both doses were determined by...
Tipo: Journal article Palavras-chave: Diazinon; Artemia salina; Ecotoxicology; Bioassay.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000300013
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