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     Current Research Journal of Biological Sciences


Heavy Metal Concentrations in Gills and Muscle of Local and Imported Tilapia in Port Harcourt, Nigeria

A.P. Ugbomeh and N.P. Akani
Department of Animal and Environmental Biology, Rivers State University of Science and Technology, Port Harcourt Nigeria
Current Research Journal of Biological Sciences  2016  3:28-31
http://dx.doi.org/10.19026/crjbs.8.2861  |  © The Author(s) 2016
Received: November ‎27, ‎2015  |  Accepted: March ‎1, ‎2016  |  Published: July 20, 2016

Abstract

The concentrations of Arsenic (As) and Cadmium (Cd) were measured in the gills and muscle of Sarotherodonmelanotheron(a locally available species) and Tilapia zilli (imported from China) in Port Harcourt in 2012 to establish their suitability for consumption as food. The samples S. melanotheron and T. zilli were derived from Creek Road market and a cold-room in Mile One Market respectively.The heavy metal analysis was performed using Flame Atomic Absorption Spectrophotometer AAS model GBC Avanta Pm. The levels of metal varied in the organs and in the fish species. Mean concentrations of As in S. melanotheron were 0.74±0.06 mg/kg and 0.68±0.07 mg/kg in gill and muscle respectively. Cd was 0.098±0.001 mg/kg in gill and 0.026±0.015 mg/kg in muscles. In T. zilli As concentration was 0.64±0.04 mg/kg in gills and 0.53±0.04 mg/kg in muscle. Cd concentration was 0.18±0.009 mg/kg in the gills and 0.17±0.063 in the muscles. The concentration of As in S. melanotheron was not significantly different from that in T. zilli, while Cd was significantly higher (p<0.01) in T. zilli. Concentrations of As and Cd in T. zilli and As in S. melanotheron were above WHO (1981) permissible limit. The implication of these levels was discussed.

Keywords:

Arsenic, bioaccumulation, cadmium, Sarotherodon melanotheron, Tilapia zilli,


References


Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.

ISSN (Online):  2041-0778
ISSN (Print):   2041-076X
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