Accumulation of Two Trace Metals in Tissues of Freshwater Fishes,<i>Oreochoromis niloticus</i>and<i>Clarias gariepinus</i>

Annune, P. A.; Iyaniwura, Timothy T.

doi:10.1300/j030v02n03_02

Cited by 14 publications

(12 citation statements)

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“…7 µg/g) was detected in the gill tissue of C. gariepinus, while the lowest was found in the muscle tissue (1.39 µg/g). These findings were in agreement Brooks and Rumsey (1974), Annune and Lyaniwura (1993) and Gbem et al (2001) who studied the bioaccumulation of trace metals in several fishes species, including C. gariepinus. Oladimeji and Offem (1989) reported that in O. niloticus, the gills consistently accumulated higher amount of lead as lead nitrate.…”

Section: Discussionsupporting

confidence: 89%

“…Beveridge et al (1985) reported highest amounts of iron in haemoglobin-rich livers. Annune and Lyaniwura (1993) also reported the liver of O. niloticus and C. gariepinus to have accumulated Zn and Cd more than other tissues. The high accumulation of these metals in the liver could be related to the fact that the liver played an important role in accumulation and detoxification.…”

Section: Discussionmentioning

confidence: 90%

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Effects of sub-lethal exposure of lead acetate on histopathology of gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus

Al-Balawi

Al-Akel

Al‐Misned

et al. 2013

Braz. arch. biol. technol.

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The aim of this work was to study the effects of sub-lethal exposure of lead acetate on the histopathology of the gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus. Results showed that lead accumulation in the tissues of C. gariepinus was dependent on the exposure period and lead concentration. Gills and liver were the predominant storage tissue and the order of accumulation in tissues was gill > liver > kidney > muscle. Some structural changes were observed in different organs, especially in the gills of the fishes exposed to lead acetate. Epithelial hypertrophy and epithelial lifting were apparent in the gills of exposed fishes. The degeneration of cytoplasm and secondary lamellae was also observed. Necrosis of hepatocytes was apparent. Glomerular expansion and gaps between the muscular bundles were found in the fishes exposed to lead acetate.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 90%

Effects of sub-lethal exposure of lead acetate on histopathology of gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus

Al-Balawi

Al-Akel

Al‐Misned

et al. 2013

Braz. arch. biol. technol.

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“…Iron is an essential trace element required by all forms of life. The effects of high doses of iron in animal studies are characterized by initial depression, coma, convulsion, respiratory failure, and cardiac arrest [65]. Postmortem examination reveals that excess iron intake is associated with adverse effects on the gastrointestinal track, which may lead to siderosis (deposition of iron in tissue), in liver, pancreas, adrenals, thyroid, pituitary, and heart [66].…”

Section: Nickel Concentrations Nickel Results Inmentioning

confidence: 99%

“…Postmortem examination reveals that excess iron intake is associated with adverse effects on the gastrointestinal track, which may lead to siderosis (deposition of iron in tissue), in liver, pancreas, adrenals, thyroid, pituitary, and heart [66]. These are characterized by initial depression, coma, convulsion, respiratory failure, and cardiac arrest [65]. Mercury is the second metal that was shown to accumulate highly in the tissues of Scomber scombrus.…”

Section: Nickel Concentrations Nickel Results Inmentioning

confidence: 99%

Risk Assessment of Heavy Metals in Imported Frozen Fish Scomber scombrus Species Sold in Nigeria: A Case Study in Zaria Metropolis

Abubakar

Uzairu

Ekwumemgbo

et al. 2015

Advances in Toxicology

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This study assesses the likely health risks to human contamination of heavy metals from fish consumption. The analysis of the idea of fish destination and status (fishing area) for heavy metals was determined by the assessment of its risk limits (daily intake of metal and health risk index). Variations in the accumulation of heavy metals concentrations were between various tissues/organs (skin, muscle, gills, liver, intestine, kidneys, brain, and bones) across the batches of two fishing origins. Post hoc (Duncan) multicomparison shows that there are significant differences ( < 0.05) across batches. The concentrations of heavy metals analyzed, in the investigated tissues of Scomber scombrus, showed higher levels of heavy metals accumulations in the order: Fe > Hg > Pb > Cd > Ni and were above the recommended safety limits outlined by FAO/WHO. However, the consumer's health risk with the consumption of fish muscles tissues shows that there are greater tendencies for cadmium, lead, and mercury exposure. Also consumption of Scomber scombrus species above the recommended daily intake (stated in this study) might lead to ingestion of heavy metals at unacceptable concentrations.

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“…High concentration of Zn was reported in the liver of seven fish species from the coastal waters of Uruguay (Viana et al, 2005). Also, Annune and Iyaniwura (1993) reported the liver of Oreochromis niloticus and Clarias gariepinus to have accumulated Zn more than other tissues. Moreover, Farombi et al (2007) observed high accumulation of Zn in the liver and gills of C. gariepinus.…”

Section: Discussionmentioning

confidence: 97%

Variability of Heavy Metals in Wild Catfish Clarias gariepinus Collected South and North Cairo Area. II. Essential Heavy Metals.

Rizkalla¹,

Haleem²,

Yassa³

2012

Egypt. J. of Aquatic Biolo. and Fish.

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Four surveys were undertaken to investigate the bioaccumulation of Fe, Cu, Zn and Mn in the liver, kidney, gills, skin and muscles of Clarias gariepinus from the River Nile south (Al-Aiat) and north (Barrage) areas of Cairo. Metals bioaccumulation were analyzed then applied to differentiate between the concentrations found at the two locations, between all of the surveys, and the two sexes.No significant seasonal variations detected in the water metals. Fe and Cu are the highest elements and Mn is the least element. Cu is the more element affected by the locality with higher concentrations in Al-Aiat than Barrage. No hazardous effect on the environmental ecosystem observed.Higher concentrations of metals were observed in the tissues of C. gariepinus than the water in which they live. All heavy metals in all organs are present in measurable quantities and still within the safe limits for consumption.Concentrations of the analyzed metals revealed large numbers of significant values concerning location, sex and season differences. Discussion is focused on the significant results.

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Accumulation of Two Trace Metals in Tissues of Freshwater Fishes,Oreochoromis niloticusandClarias gariepinus

Cited by 14 publications

References 0 publications

Effects of sub-lethal exposure of lead acetate on histopathology of gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus

Effects of sub-lethal exposure of lead acetate on histopathology of gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus

Risk Assessment of Heavy Metals in Imported Frozen Fish Scomber scombrus Species Sold in Nigeria: A Case Study in Zaria Metropolis

Variability of Heavy Metals in Wild Catfish Clarias gariepinus Collected South and North Cairo Area. II. Essential Heavy Metals.

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