Observations on metal concentrations in commercial landings of two species of tilapia (<i>Oreochromis mossambicus</i>and<i>Oreochromis niloticus</i>) from reservoirs in six river basins in Sri Lanka

Allinson, Graeme; Salzman, Scott; Turoczy, N.; Nishikawa, Masataka; Amarasinghe, U.S.; Nirbadha, K.G.S.; Silva, S.S. De

doi:10.1080/02772240903049710

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…Furthermore, among these toxic metals, Hg concentration was observed to be relatively higher than Cd and Pb levels. There is clear evidence from a reservoir in temperate regions that Hg concentrations in the water column and sediments, and thence fish, rise after impoundment (Allinson et al, 2010). AlthoughBodaly et al (1995) suggest that for temperate lakes remote from direct anthropogenic influences, Hg concentrations in fish are related to lake temperature, not catchment characteristics, but Allinson et al (2002) hint that correlation between land use pattern and fish metal concentrations in these anthropogenically impacted, tropical lakes also.…”

Section: Resultsmentioning

confidence: 99%

Trace Metal Contents in Muscle Tissues of Inland Fish Species in the North Central Province of Sri Lanka

Jinadasa

Subasinghe²,

Thayalan³

et al. 2014

Ceylon J. Sci. (Biol. Sci.)

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Chronic Kidney Disease (CKD) has recently shown a remarkable increase in some areas in the North Central Province (Anuradhapura and Polonnaruwa districts), Sri Lanka. The consumption of fresh water fish contaminated with trace metals is considered as a possible causal factor for this. The concentration of mercury (Hg), lead (Pb), cadmium (Cd), chromium (Cr), copper (Cu), cobalt (Co), zinc (Zn), iron (Fe) and arsenic (As) in the muscle tissues of the five commonly consumed freshwater fish species, Oreochromis spp., Heteropneustes fossilis, Glossogobius giuris, Channa striata and Macrognathus aral were determined using Atomic Absorption Spectrophotometry (AAS). This study indicates that toxic metals' Hg, Cd and Pb were detected in very low concentration in muscle tissues and the recorded values were lower than the maximum permissible level (Hg< 0.5 mg/kg, Pb< 0.2 mg/kg and Cd< 0.05 mg/kg) established in Sri Lanka. The amount of fish that would fulfil the weekly protein requirement of an average child and adult was calculated according to the WHO guidelines. The calculated levels of contamination by Hg, Pb, Cd, As, Cu, Zn, Cr and Fe in the quantity of fish needed to fulfil the protein requirement was lower than the Provisional Tolerable Weekly Intake (PTWI) value established by WHO, EU and FAO and none of above guidelines not covered the level of Co.

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Section: Resultsmentioning

confidence: 99%

Trace Metal Contents in Muscle Tissues of Inland Fish Species in the North Central Province of Sri Lanka

Jinadasa

Subasinghe²,

Thayalan³

et al. 2014

Ceylon J. Sci. (Biol. Sci.)

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“…where, EDI is the estimated daily intake (mg/kg bw/day), MC is the metal concentration in fi sh muscle (mg/kg wet weight), IRd is the daily average fi sh ingestion rate (kg/day) and BW is the average body weight for an adult. In Sri Lankan context, the IRd for fi sh was taken as 0.060 kg/day (Allinson et al, 2009;2010). Average body weight of an adult was considered as 70 kg (the USEPA default value).…”

Section: Human Health Risk Assessmentmentioning

confidence: 99%

Cadmium and arsenic levels in edible fishes, Oreochromis niloticus (Nile tilapia) and Ompok bimaculatus (butter catfish) from Padaviya Reservoir, Sri Lanka and human health risk assessment associated with their dietary exposure

Weerasekara

Pathiratne

Kithsiri

2020

J. Natn. Sci. Foundation Sri Lanka

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Consumption of fi sh contaminated with toxic heavy metals is a threat to human health. Cadmium and arsenic are suspected as potential risk factors for chronic kidney disease of unknown aetiology (CKDu), which is highly prevalent in agricultural settlements in dry zone districts of Sri Lanka causing a severe public health crisis. Objectives of this study were (i) to determine cadmium and arsenic levels in muscle, liver and kidney of two edible fi shes (Nile tilapia and butter catfi sh) from the Padaviya reservoir located in the North Central Province, Sri Lanka where CKDu is highly prevalent and (ii) to assess the potential human health risks associated with the dietary exposure through edible muscle of these fi shes. Cadmium and arsenic levels of the tissues in the two fi sh species were determined using inductively coupled plasma mass spectrometry. In both fi sh species, highest cadmium levels were found in kidney (p < 0.05) whereas no signifi cant tissue specifi c diff erences (p > 0.05) were evident for arsenic. In the edible muscle, the maximum detected cadmium level in Nile tilapia was 0.1 mg/kg in wet weight. However, cadmium levels in the muscle of all Butter catfi sh were < 0.05 mg/kg. Arsenic levels in the muscle of all Nile tilapia and Butter catfi sh were < 0.05 mg/kg. Cadmium contents in muscle of most fi shes and arsenic contents in all fi shes (n = 60) were within the maximum permissible limits set by the international food standards regulatory authorities. Based on the estimated daily intake and target hazard quotients (< 1) for lifetime exposure, it is highly unlikely that cadmium and arsenic contents of the muscle meat of these fi shes would pose human health risks to moderate level consumers.

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“…However, multiple factors including land use practices, agricultural practices, industrial activities, season, physical and chemical properties of water can play a significant role in accumulation of heavy metal in tissues of edible fish (Rauf and Javed 2007;Guruge et al 2007;Takeshi et al 2015). Thus, many studies have recorded on bioaccumulation of heavy metal in the muscle tissues of fish collected from different freshwater aquatic systems in relation to their concentrations in water (Allinson et al 2009;Allinson et al 2010;Jinadasa et al 2010). However, limited information is available regarding heavy metal contamination status of edible fish species captured from inland water bodies of Sri Lanka (Indrajith et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Heavy metal contamination status in seven fish species from reservoirs of Polonnaruwa district, Sri Lanka

Wijesinghe

Idroos

Manage

2018

Sri Lanka J. Aquat.

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Heavy metal contamination in aquatic ecosystems has become an emerging environmental issue. The stable physicochemical properties of heavy metals could result in bioconcentration and bioaccumulation in different organs of freshwater fishes. The present study records the accumulation of Lead (Pb), Cadmium (Cd), Chromium (Cr), Copper (Cu) and Zinc (Zn) in the head, muscle and skin regions of seven fish species namely, Labeo rohita, Oreochromis mossambicus, Oreochromis niloticus, Etroplus suratensis, Heteropneustes fossilis, Oligolepsis acutipennis and Puntius dorsalis collected from Minnerya, Parakrama Samudraya and Kaudulla reservoirs in Polonnaruwa district, Sri Lanka. The results showed that both Pb and Cd accumulated in high concentrations in the head region compared to the skin and muscles of the fish samples. The highest amounts of Pb (22.44±5.48 mg/Kg) and Cd (4.98±0.86mg/Kg) were recorded from the head parts of the H. fossilis in Minneriya and O. niloticus in Kaudulla respectively, whereas the highest amount of Cr (30.87±4.51mg/Kg) was detected in head part of the O. acutipennis in Minneriya. The Cu concentration was the highest (2.92±0.001 mg/Kg) in head regions of H. fossilis from Minneriya. Zn was the most abundant heavy metal detected in the head, muscle and skin regions of fish in all three reservoirs. The highest amount of Zn (118.93±10.55mg/Kg) was detected in the head part of O. acutipennis from Minneriya. The Pb, Cd, Cr, Cu and Zn concentrations detected in the head part of popular edible freshwater species, O. mossambicus, O. niloticus and E. suratensis were higher than the provisional tolerable weekly intake (PTWI) of Pb (0.025 mg/Kg), Cd (0.007 mg/Kg), Cr (0.1 mg/Kg), Cu (3.5 mg/Kg) and Zn (7 mg/Kg) specified by the FAO/WHO. Therefore, long-term consumption of these fish species especially the head parts may lead to accumulation of these heavy metals in tissues and lead to chronic diseases which may risk the health of consumers especially in the north-central province of Sri Lanka.

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Observations on metal concentrations in commercial landings of two species of tilapia (Oreochromis mossambicusandOreochromis niloticus) from reservoirs in six river basins in Sri Lanka

Cited by 4 publications

References 20 publications

Trace Metal Contents in Muscle Tissues of Inland Fish Species in the North Central Province of Sri Lanka

Trace Metal Contents in Muscle Tissues of Inland Fish Species in the North Central Province of Sri Lanka

Cadmium and arsenic levels in edible fishes, Oreochromis niloticus (Nile tilapia) and Ompok bimaculatus (butter catfish) from Padaviya Reservoir, Sri Lanka and human health risk assessment associated with their dietary exposure

Heavy metal contamination status in seven fish species from reservoirs of Polonnaruwa district, Sri Lanka

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