scholarly journals Ecological Risk Assessment of Metal Pollution along Greater Cairo Sector of the River Nile, Egypt, Using Nile Tilapia,Oreochromis niloticus, as Bioindicator

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Wael A. Omar ◽  
Wafai Z. A. Mikhail ◽  
Hanaa M. Abdo ◽  
Tarek A. Abou El Defan ◽  
Mamdouh M. Poraas
Keyword(s):  
Risk Assessment ◽  
Metal Pollution ◽  
Fish Consumption ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Hazard Index ◽  
Fish Muscle ◽  
River Nile ◽  
Wide Range ◽  
Greater Cairo

The present work aims to evaluate seasonal metal pollution along Greater Cairo sector of the River Nile, Egypt, using wild Nile tilapia,Oreochromis niloticus, as bioindicator and to conduct a risk assessment for human consumers. Greater Cairo is the largest populated area along the whole course of River Nile with a wide range of anthropogenic activities. Effects of metal pollution on fish body indices were studied using condition factor (CF) and scaled mass index (SMI). Metal pollution index (MPI) showed that the total metal load in fish organs followed the follwoing order: kidney > liver > gill > muscle which gives a better idea about the target organs for metal accumulation. Metal concentrations in fish muscle (edible tissue) showed the following arrangement: Fe > Zn > Cu > Mn > Pb > Cd. Metal’s bioaccumulation factor (BAF) in fish muscle showed the following arrangement: Zn > Cu > Fe > Mn > Cd and Pb. The hazard index (HI) as an indicator of human health risks associated with fish consumption showed that adverse health effects are not expected to occur in most cases. However, the metals’ cumulative risk effects gave an alarming sign specifically at high fish consumption rates.

scholarly journals Elemental Composition and Health Risk Assessment of Giant Mudskipper (Periophthalmodon schlosseri) From the Intertidal Zone of the West Coast of Peninsular Malaysia

2021 ◽  
Vol 7 ◽  
Author(s):  
Ley Juen Looi ◽  
Ahmad Zaharin Aris ◽  
Noorain Mohd Isa ◽  
Fatimah Md. Yusoff ◽  
Hazzeman Haris
Keyword(s):  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
West Coast ◽  
Fish Consumption ◽  
Intertidal Zone ◽  
Fish Muscle ◽  
Peninsular Malaysia ◽  
The West ◽  
Periophthalmodon Schlosseri

The elemental pollution in the intertidal zone of the West Coast of Peninsular Malaysia is of concern because this place is an ultimate sink of anthropogenic contaminants. In this study, the elemental concentrations (Al, Fe, Ba, Co, Cu, Cr, Mn, Ni, Pb, Zn, As, and Cd) in various tissues (muscle, gill, liver, gastrointestinal tract, and scale) of the giant mudskippers (Periophthalmodon schlosseri) from the West Coast of Peninsular Malaysia were determined by the inductively coupled plasma-mass spectrometry. The potential health risks associated with fish muscle consumption were assessed using estimated weekly intake (EWI), target hazard quotient (THQ), and target cancer risk (TR). The results showed that relatively high concentrations of Fe (1,641.91 ± 96.77 mg/kg), Ba (7.07 ± 0.05 mg/kg), Co (0.32 ± 0.00 mg/kg), Mn (36.08 ± 0.04 mg/kg), and Ni (4.43 ± 0.06 mg/kg) were found in the fish scales, suggesting the uptake waterborne elements via dermal exposure. However, all studied elements in the fish muscle were below the national and international food permissible limits. Health risk assessment through the estimation of THQ suggested that long-term exposure of As through fish consumption would cause possible non-carcinogenic risk. Also, the estimation of TR indicated that consumers are susceptible to cancer risks because of Cr and As exposure via fish consumption. Thus, for a developing country like Malaysia, it is recommended to include continuous monitoring of intertidal zones, using potential bioindicators, to assess ecosystem health status and safeguard human health. Additionally, mitigation strategies to address estuaries contamination and efforts to conserve and sustain natural resources should be established.

scholarly journals Bioaccumulation and Human Risk Assessment of Heavy Metals in Oreochromis niloticus and Clarias gariepinus Fish Species from the Golinga Reservoir, Ghana

2021 ◽  
Vol 75 ◽  
Author(s):  
Zita Naangmenyele ◽  
Somandla Ncube ◽  
Felix J. Akpabey ◽  
Simiso Dube ◽  
Mathew M. Nindi
Keyword(s):  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Fish Species ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Hazard Quotient ◽  
Clarias Gariepinus ◽  
Target Hazard Quotient ◽  
Risk Of Cancer

ABSTRACT The Nile tilapia (Oreochromis niloticus) and African catfish (Clarias gariepinus) from the Golinga reservoir in Northern Ghana are consumed as an alternative source of protein. In the current study, levels of selected metals (As, Cd, Fe, Co, Cr, Cu, Mn, Mo, Ni and Pb) in the two fish species and the fish condition were determined, and potential human health effects assessed. The metal concentrations in the edible fish muscles ranged from 0.16 mg kg-1 (Mn) to 101 mg kg-1 (Pb). The weight-length relationships showed that both fish were growing isometrically, and bioaccumulation of metals from the reservoir was considered insignificant with bioconcentration factors below 100 except for Mn, whose value was 161 in the gills of Oreochromis niloticus. The health risk assessment showed that Pb, Cd and As had Target Hazard Quotient values above 1 for both fish species, with that of As being as high as 19.6 for Oreochromis niloticus. The target cancer risk values for As, Cd, Cr and Pb were above the non-risk threshold of <10-6, indicating the risk of cancer developing over the years due to fish consumption. The metal concentration in the fish in the reservoir should therefore be constantly monitored and potential health risks associated with frequent consumption of the fish assessed. Keywords: fish; health risk assessment; Nile tilapia; Target Hazard Quotient; trace metals

scholarly journals Lead accumulation in fish oreochromis niloticus and human health risk assessment for consumers

2019 ◽  
Vol 2 (3) ◽  
pp. 81-85
Author(s):  
Tri Nguyen Minh ◽  
Nhu Xuan Tran Thi ◽  
Phong Nguyen Hai ◽  
◽  
◽  
...  
Keyword(s):  
Risk Assessment ◽  
Health Risk ◽  
Human Health ◽  
Health Risk Assessment ◽  
Strong Correlation ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Human Health Risk ◽  
Risk Quotient ◽  
Lead Accumulation

Tilapia (Oreochromis niloticus) is very popular in the daily meals of many families in Vietnam. However, lead accumulation in this type of fish has not been taken specifically. Results showed that the nile tilapia in several lakes in the Hue city contented high levels of Pb content exceeding the permitted levels issued by the Ministry of Health. Therefore, consuming them may not be safe. The BSAF bioaccumulative coefficient of Pb was low and there was a strong correlation between Pb contents in sediment and in the flesh of the fish. The risk quotient (RQ) higher than 1 indicated that consuming fish exploited from these areas may endanger users&rsquo; health.

Two Myxobolus spp. infecting the kidney of Nile tilapia (Oreochromis niloticus) in the River Nile at Beni-Suef governorate, Egypt, and the associated renal changes

2015 ◽  
Vol 114 (3) ◽  
pp. 1107-1112 ◽  
Author(s):  
Abdel-Azeem S. Abdel-Baki ◽  
Heba M. Abdel-Haleem ◽  
Thabet Sakran ◽  
Eman Zayed ◽  
Khalid E. Ibrahim ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
River Nile ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Renal Changes
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