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

Allinson, G., Salzman, S. A., Turoczy, N., Nishikawa, M., Amarasinghe, U. S., Nirbadha, K. G. S. and De Silva, S. S. 2010, Observations on metal concentrations in commercial landings of two species of tilapia (Oreochromis mossambicus and Oreochromis niloticus) from reservoirs in six river basins in Sri Lanka, Toxicological & environmental chemistry, vol. 92, no. 4, pp. 749-763.

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Title Observations on metal concentrations in commercial landings of two species of tilapia (Oreochromis mossambicus and Oreochromis niloticus) from reservoirs in six river basins in Sri Lanka
Formatted title Observations on metal concentrations in commercial landings of two species of tilapia (Oreochromis mossambicus and Oreochromis niloticus) from reservoirs in six river basins in Sri Lanka
Author(s) Allinson, G.
Salzman, S. A.
Turoczy, N.
Nishikawa, M.
Amarasinghe, U. S.
Nirbadha, K. G. S.
De Silva, S. S.
Journal name Toxicological & environmental chemistry
Volume number 92
Issue number 4
Start page 749
End page 763
Publisher Taylor & Francis Group
Place of publication Abingdon, England
Publication date 2010-04
ISSN 0277-2248
1029-0486
1026-7832
Keyword(s) Sri Lanka
reservoir fisheries
tilapia
metals
catchment land use
Summary Samples of the muscle of two species of tilapia (Oreochromis mossambicus and O. niloticus; 17-20 cm length) were obtained from at least one reservoir in each of the six river basins (Aruvi Aru, Kala Oya, Kirindi Oya, Ma Oya, Mahaweli, and Walawe Ganga catchments) in Sri Lanka. The metals Ca, Cu, Fe, K, Mg, Mn, Na, and Zn were consistently detected in the muscle tissue. Overall, there were few differences in the concentration of metals between the two species of fish, although there were also some statistically significant differences (p < 0.05) in the concentrations of some metals in fish obtained from some of the reservoirs. Aruvi Aru stands out as a river basin in which the two fish species have significantly lower concentration of metals when compared to other river basins. The concentration of the metals studied were below WHO and FSANZ guideline values for fish, suggesting that the consumption of the metals found in tilapia from these reservoirs poses little risk to human health.
Language eng
Field of Research 060101 Analytical Biochemistry
Socio Economic Objective 961005 Natural Hazards in Fresh, Ground and Surface Water Environments
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, Taylor & Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30028618

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