Disclosure Statement: The authors report no conflicts of interests.
Mercury levels in feed and muscle of farmed tilapia†
Article first published online: 7 FEB 2012
Copyright © 2012 Wiley Periodicals, Inc.
American Journal of Industrial Medicine
Special Issue: Research Contributions from the United States International Training and Research in Environmental and Occupational Health Program: Part 1
Volume 55, Issue 12, pages 1159–1165, December 2012
How to Cite
Botaro, D., Torres, J. P. M., Schramm, K.-W. and Malm, O. (2012), Mercury levels in feed and muscle of farmed tilapia. Am. J. Ind. Med., 55: 1159–1165. doi: 10.1002/ajim.22021
- Issue published online: 7 NOV 2012
- Article first published online: 7 FEB 2012
- Manuscript Accepted: 12 JAN 2012
- CNPq. Grant Numbers: CNPq/MAPA/SDA 577906/2008-9, CAPES/PROBRAL/DAAD 270/07
- Mont Sinai School of Medicine. Grant Number: D43TW00640
- fish feed;
- heavy metals;
- Oreochromis niloticus
Fish consumption is considered the most important source of contaminant exposure for humans beings, and farmed fish can be exposed to contaminants via feed supply.
Total mercury concentrations (THg) were determined in the muscle, liver, and feed of farmed Nile tilapia (juveniles and adults) from four different fish farms in Brazil (net cages and intensive tanks systems), by a flow injection mercury system.
Mercury concentrations observed in fish muscle were markedly lower (13.5–30.5 µg kg−1) than the values recommended by ANVISA/MAPA for edible part of fish (500 µg kg−1), and in the liver the concentrations found were higher than in the muscle.
These low levels of THg in farmed tilapia may be due to the low THg concentrations found in the analyzed fish feed, that ranged from 5.2 to 33.2 µg kg−1, below the limit of 100 µg kg−1 established by the European Commission. Am. J. Ind. Med. 55:1159–1165, 2012. © 2012 Wiley Periodicals, Inc.