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Observations of metal concentrations in tilapia (Oreochromis mossambicus)in reservoirs of South Sri Lanka

Allinson, G., Nishikawa, M., De Silva, Sena., Laurenson, Laurie and De Silva, K. 2002, Observations of metal concentrations in tilapia (Oreochromis mossambicus)in reservoirs of South Sri Lanka, Ecotoxicology and environmental safety, vol. 51, no. 3, pp. 197-202.

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Title Observations of metal concentrations in tilapia (Oreochromis mossambicus)in reservoirs of South Sri Lanka
Formatted title Observations of metal concentrations in tilapia (Oreochromis mossambicus)in reservoirs of South Sri Lanka
Author(s) Allinson, G.
Nishikawa, M.
De Silva, Sena.
Laurenson, Laurie
De Silva, K.
Journal name Ecotoxicology and environmental safety
Volume number 51
Issue number 3
Start page 197
End page 202
Publisher Elsevier Science (USA)
Place of publication New York, N.Y.
Publication date 2002-03
ISSN 0147-6513
Keyword(s) Sri Lanka
artisanal fisheries
tilapia;
heavy metals;
reservoirs
Summary Samples of the muscle and liver of tilapia (Oreochromis mossambicus) obtained from the five reservoirs in four catchments in southern Sri Lanka in 1998 were analyzed for 16 elements: As, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Sr, and Zn by inductively coupled plasma emission spectrophotometry, and Hg by atomic absorption spectrophotometry. The concentrations of Cr, Ni, and Pb were below the detection limits of the instrumental techniques employed in all samples. The elements As, Ca, Co, Cu, Fe, Hg, K, Mg, Mn, Na, Sr, and Zn were detected in the muscle and liver tissue, with Cd detected in some liver samples. There were no statistically significant differences between the individual concentrations of any of the metals and the site from which the tilapia were collected (P>0.05). Furthermore, no statistically significant correlations were found between total length of fish and metal concentration. No elements were found at concentrations of toxicological concern. However, a principal component analysis suggests that the populations of tilapia in the reservoirs may be exposed to different regimes of metals, possibly associated with different catchment land-use patterns.
Language eng
Field of Research 070401 Aquaculture
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2002, Elsevier Science (USA)
Persistent URL http://hdl.handle.net/10536/DRO/DU:30001553

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