March 26, 2019 — A new Marine Stewardship Council study has found mislabeling of its certified seafood is lower than the average of several other recent studies, which claim to have detected seafood mislabeling rates as high as 30 percent.
MSC’s expansive analysis of 1,402 MSC-certified fish products from 18 countries found that fewer than 1 percent of MSC-labeled seafood products were mislabeled.
The results were published in the journal Current Biology.
“There is widespread concern over the vulnerability of seafood supply chains to deliberate species mislabelling and fraud. In the past, this has included some of the most loved species such as cod being substituted by farmed catfish, which can seriously undermine consumer trust and efforts to maintain sustainable fisheries,” the lead of author of the paper, the MSC’s Jaco Barendse, said in an MSC press release.
The MSC’s ecolabeling and Chain of Custody program is an effective deterrent for systematic and deliberate species substitution and fraud, the organization said.
In the new study, the largest and most comprehensive assessment of MSC-labeled products, MSC worked with laboratories of the TRACE Wildlife Forensics Network and SASA’s (Science and Advice for Scottish Agriculture) Wildlife DNA Forensic unit to employ DNA barcoding.
Of the 1,402 seafood products tested, 1,389 were labeled correctly and 13 (0.92 percent) were not. Mislabeled products were found in fresh and frozen pre-packed products and in restaurants, mainly in Western Europe, with one case in the U.S. All cases of mislabeling were identified in whitefish (such as cod, hake, and hoki) and flatfish products.