Heavy metal contamination of &lt;i&gt;Clarias gariepinus&lt;/i&gt; from a lake and fish farm in Ibadan, Nigeria

Olaifa, Flora Eyibio; Olaifa, AK; Adelaja, AA; Owolabi, AG

doi:10.4314/ajbr.v7i3.54185

Cited by 92 publications

(79 citation statements)

References 4 publications

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“…Among aquatic animals, fishes are widely used to evaluate the health of aquatic ecosystems because pollutants build up in the food chain and are responsible for adverse effects and consequent death [7,8]. In this study, the concentration of metals in fish (Catla catla and Labeo rohita) organs (liver gill and muscle) were used to calculate Bioaccumulation Factor (BAF).…”

Section: Introductionmentioning

confidence: 99%

Metal Concentration in Fresh Water Fish Organs

Raju¹,

Somashekar²,

Prakash³

2013

OJMetal

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This study was conducted during March to May of 2010 dry season, giving prime thrust to determine the metal concentrations in commercial fish species of Catla catla and Labeo rohita, collected from various points along the river Cauvery. The liver, gill and muscle tissues of fish were analyzed for Fe, Pb, Zn, Ni, Mn, Cu, Cr and Cd using Atomic Absorption Spectrophotometry (AAS-model: 6300). The Catla catla has shown more accumulation potency for all the metals than Labeo rohita. The liver in both fish species has better accretion capacity compared to gill and muscle and the same was noticed by bioaccumulation factor. The results of bioaccumulation factor were in the order of Ni > Zn > Cu > Mn > Fe > Cr > Pb > Cd. Elevated trend was noticed among the essential metals and decreased trend among the nonessential metals were observed in both fish species.

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Section: Introductionmentioning

confidence: 99%

Metal Concentration in Fresh Water Fish Organs

Raju¹,

Somashekar²,

Prakash³

2013

OJMetal

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“…Owing to their toxicity and cumulative effect, discharge of heavy metals into the aquatic environments can alter the diversity of aquatic species and ecosystems (Berga, 2006). Aquatic organisms (such as fish and shell fish) accumulate heavy metals concentrations many times higher than what is present in water or sediment (Olaifa et al, 2004;George et al, 2013). At low concentration, some heavy metals such as iron, manganese, copper, *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Determination of heavy metal levels in Oreochromis niloticus and Chrysichthys nigrodigitatus from Ogun River, Nigeria

Fafioye¹,

Oladunjoye²,

Bamidele³

et al. 2017

Int. J. Fish. Aquac.

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Comparison of heavy metal levels in Oreochromis niloticus and Chrysichthys nigrodigitatus caught inOgun River (Nigeria) was carried out to reveal the potential health risks associated with fish consumption from the river. Concentrations of copper, lead and cadmium were determined in the gills, eyes, bone, flesh, liver and stomach of the fish species. Ten fish of each species were obtained commercially and analyzed for the metals using Atomic Absorption Spectrophotometer. Data obtained were subjected to one-way analysis of variance (ANOVA) at 5% significant level. The highest concentrations of Cu were observed in the gills of O. niloticus and the eyes followed by liver of C. nigrodigitatus, while the lowest concentrations were detected in the eyes of O. niloticus and bone of C. nigrodigitatus. Lead concentrations were higher in the liver of O. niloticus and gills of C. nigrodigitatus, while the lowest concentrations were detected in stomach of O. niloticus and C. nigrodigitatus respectively. Also, in proximate analysis, composition of dry matter, crude protein, crude fat, ash and carbohydrate contents recorded high in C. nigrodigitatus and O. niloticus and significantly differs. All the metals studied exceeded standard permissible limit for human consumption. Therefore, monitoring of the river is highly recommended, while adequate information, education and training should be strengthened to control further pollution.

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“…Of the over 32,800 species of fishes, the African Catfish (Clarias gariepinus) is among the most popular in Nigeria's wild waters and aquaculture media (Amos and Bolorunduro, 2000), this is primarily due to their fast growth, hardiness, resistance to diseases, easy to breed both in captivity and wild. However, with these merits comes some drawbacks, as several studies have shown that wild captured fishes with potential of being hardy, bio-accumulate heavy metals to a large extent that has far-reaching health risks (Brown and Walls, 1997;Yilmaz, 2003;Hajeb et al, 2009;Olaifa et al, 2010;Mieiro et al, 2012;Bashir et al, 2013). With the growing awareness of eating healthy, there has been a rising consumption of both wild and farmed fish meat in Nigeria, this is in addition to the very low level of consumer safety control in place and inadequate pollution control measures in the nation's waters, inclusive of River Galma.…”

Section: Introductionmentioning

confidence: 99%

Risk Assessment of Heavy Metals in Wild and Farmed Clarias gariepinus (Burchell, 1822) in Zaria, Kaduna State, Nigeria

Onyidoh¹,

Ismail²,

Muhammad³

et al. 2018

GJAS

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The likely health risks developed as a result of human contamination by heavy metal through fish consumption was assessed in this study. The analysis of wild and farmed fish for heavy metals was determined and an assessment of the risk limits was evaluated through daily intake of metal and health risk index. Heavy metals accumulations varied in concentrations in the various tissues/organs (skin, muscle, gills, liver, intestine, kidneys, brain, and bones) across the groups of farmed and wild fish species (Clarias gariepinus). A post-hoc multi-comparison (Duncan Multiple Range Test) showed that there were significant differences ( < 0.05) across analysed samples. The analysis of heavy metals concentrations, in the investigated tissues of Clarias gariepinus, showed levels of heavy metals accumulations in the order: Fe>Hg>Pb>Cd>Ni and were all below the recommended safety limits outlined by FAO/WHO. Furthermore, the consumer's health risk with the consumption of fish muscles tissues shows that there are very negligible tendencies for cadmium, lead, and mercury exposure. Also the ingestion of Clarias gariepinus with heavy metal concentrations indicated in this study is within the FAO/WHO safety daily intake limits (also specified in the study) and would not result in accumulation of heavy metals at intolerable concentrations, thus health complications arising from accumulation of heavy metals are rare.

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Heavy metal contamination of <i>Clarias gariepinus</i> from a lake and fish farm in Ibadan, Nigeria

Abstract: Adult Clarias gariepinus (African Catfish)

Cited by 92 publications

References 4 publications

Metal Concentration in Fresh Water Fish Organs

Metal Concentration in Fresh Water Fish Organs

Determination of heavy metal levels in Oreochromis niloticus and Chrysichthys nigrodigitatus from Ogun River, Nigeria

Risk Assessment of Heavy Metals in Wild and Farmed Clarias gariepinus (Burchell, 1822) in Zaria, Kaduna State, Nigeria

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