|
A pilot study examining contaminant loads in farmed salmon, wild salmon and commercial salmon feed has come to five intresting conclucions that follow:
1.Farmed Atlantic and Chinook salmon have significantly higher concentrations of PCBs, organochlorine pesticides (mainly DDT and derivatives) and polybrominated diphenyl ethers than does the wild salmon analyzed in our study.
2.Because of small sample sizes, the contaminant loadings of toxaphene, PAHs and mercury are not able to be differentiated between wild and farmed fish.
3.The contaminant loads in the farmed salmon come largely from the commercial salmon feed which they consume.
4.There is a significant variation in the contaminants present in the various types of commercial salmon feed analyzed.
5.Even in the small sample size used in the present study, it is evident, from the findings of recent research examining background contaminant levels, that the higher contaminant loads in farmed salmon, as compared to wild Pacific salmon, likely increases the risk of adverse health effects in children of women who are frequent eaters of farmed fish.
www.intl-ecogen.com |
|