2005
DOI: 10.3390/ijerph2005010063
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Studies on the Development of Potential Biomarkers for Rapid Assessment of Copper Toxicity to Freshwater Fish using Esomus danricus as Model

Abstract: Living in an environment that has been altered considerably by anthropogenic activities, fish are often exposed to a multitude of stressors including heavy metals. Copper ions are quite toxic to fish when concentrations are increased in environmental exposures often resulting in physiological, histological, biochemical and enzymatic alterations in fish, which have a great potential to serve as biomarkers. Esomus danricus was chosen as model in the present study and the metabolic rate, gill morphology, total gl… Show more

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Cited by 31 publications
(9 citation statements)
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“…In the present study, flying barb responded to Cu by reducing the rate of oxygen consumption. Adverse effects of Cu on respiratory capabilities, as seen in the present study, were also studied in Tilapia sparrmanii (Van Aardt and Hough, 2006) and in Esomus danricus (Vutukuru et al, 2005). Cu had a depressing effect on oxygen consumption in Cyprinus carpio (De Boeck et al, 1995) and in Labeo capensis and Micropteris salmoides (Van Aardt and Hough, 2007).…”
Section: Discussionsupporting
confidence: 72%
“…In the present study, flying barb responded to Cu by reducing the rate of oxygen consumption. Adverse effects of Cu on respiratory capabilities, as seen in the present study, were also studied in Tilapia sparrmanii (Van Aardt and Hough, 2006) and in Esomus danricus (Vutukuru et al, 2005). Cu had a depressing effect on oxygen consumption in Cyprinus carpio (De Boeck et al, 1995) and in Labeo capensis and Micropteris salmoides (Van Aardt and Hough, 2007).…”
Section: Discussionsupporting
confidence: 72%
“…Copper significantly increased the ventilation rate of exposed fish for all air saturation levels tested. This has been reported in other species, including in trout where exposure to copper resulted in reduced swimming activity and increased ventilation rates (Beaumont et al, 1995), and in the flying barb ( Esomus danricus ) where exposure to copper resulted in an increase in ventilation frequency (Vutukuru et al, 2005). Increased ventilation rates are considered to be linked to the physiological stress induced by copper toxicity.…”
Section: Discussionsupporting
confidence: 54%
“…As for copper, Karan et al [ 25 ] reported significant changes in metabolic enzymes in gills, livers, and blood of C. carpio exposed to sublethal concentrations of copper (96-h LC 50 value: 0.64 mg/L). Acute lethal effects of copper were attributed to excess mucous covering the gill tissues, leading to the breakdown of respiratory function [ 26 ].…”
Section: Discussionmentioning
confidence: 99%