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TOXICIDAD AGUDA DE CLORURO DE MERCURIO (HGCL sub( 2)) EN CACHAMA BLANCA, PIARACTUS BRACHYPOMUS (CUVIER, 1818)/ACUTE TOXICITY OF MERCURY CHLORIDE (HGCL sub( 2)) TO CACHAMA BLANCA, PIARACTUS BRACHYPOMUS (CUVIER, 1818)
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TOXICIDAD AGUDA DE CLORURO DE MERCURIO (HGCL sub( 2)) EN CACHAMA BLANCA, PIARACTUS BRACHYPOMUS (CUVIER, 1818)/ACUTE TOXICITY OF MERCURY CHLORIDE (HGCL sub( 2)) TO CACHAMA BLANCA, PIARACTUS BRACHYPOMUS (CUVIER, 1818)
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TOXICIDAD AGUDA DE CLORURO DE MERCURIO (HGCL sub( 2)) EN CACHAMA BLANCA, PIARACTUS BRACHYPOMUS (CUVIER, 1818)/ACUTE TOXICITY OF MERCURY CHLORIDE (HGCL sub( 2)) TO CACHAMA BLANCA, PIARACTUS BRACHYPOMUS (CUVIER, 1818)
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Journal Article
TOXICIDAD AGUDA DE CLORURO DE MERCURIO (HGCL sub( 2)) EN CACHAMA BLANCA, PIARACTUS BRACHYPOMUS (CUVIER, 1818)/ACUTE TOXICITY OF MERCURY CHLORIDE (HGCL sub( 2)) TO CACHAMA BLANCA, PIARACTUS BRACHYPOMUS (CUVIER, 1818)
2013
Overview
The improper disposal of mercury-containing substances may cause toxicity and accumulate in fish tissues. In this study, the median lethal concentration (LC50) of mercury exposure at 96 hours in cachama blanca [Piaractus brachypomus (Cuvier, 1818)] was estimated through a semi-static acute toxicity test by using mercury chloride (HgCl2) as a metal source. The experiment was carried out in the toxicology laboratory of the University of Tolima (Colombia), under controlled conditions (28.09 plus or minus 1.86 degree C) and a 12:12 (light:darkness) photoperiod. The cachama blanca fingerlings (6.55 plus or minus 1.3 g) were housed in glass aquaria with constant aeration without filter and feeding was suppressed 24 hours before beginning the experiment. Four cencnetrations of mercury (Hg) were used with replicas including controls. The concentrations were: 0.45, 0.55, 0.65, and 0.75 mg Hg/l. The value of LC50-96 h was estimated by using the TSK software (Trimmed-Spearman-Karber) and produced a value of 0.56 mg Hg/l. This value is close to those reported for other fish species and represents the first report of acute toxicity to the mercury in cachama blanca.
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