Is your hake fake? DNA provides the answer

DNA analysis can help determine whether seafood has been fradulently mislabelled Photo: MSC DNA analysis can help determine whether seafood has been fradulently mislabelled Photo: MSC

DNA barcoding of more than 1,400 Marine Stewardship Council (MSC) labelled products has shown that fewer than 1% are mislabelled, compared to a reported average of 30%.

DNA methods have been widely used to detect species mislabelling and a recent meta-analysis of 4,500 seafood product tests found almost a third were not the species stated on the label or menu.

“There is widespread concern over the vulnerability of seafood supply chains to deliberate species mislabelling and fraud,” explained Jaco Barendse from the MSC and lead author of the paper. “In the past, this has included some of the most loved species that are substituted by lower value or less sustainable options, and which can seriously undermine consumer trust and efforts to maintain sustainable fisheries.”

In this present study, the results of which are published in the journal Current Biology, the MSC worked with the TRACE Wildlife Forensics Network and the Science and Advice for Scottish Agriculture Wildlife DNA Forensic unit to identify the species in 1,402 MSC-certified fish products from 18 countries.

They found that 1,389 were labelled correctly representing a total rate of 0.92% species mislabelling in contrast with the global average of 30%.

While DNA testing can identify cases of species substitution, it cannot confirm whether this was fraud. To do this it is necessary to trace the product’s movement back through the supply chain.

The MSC’s Chain of Custody certification requires that every distributor, processor, and retailer trading certified seafood has a documented system that maintains separation between certified and non-certified seafood, and correctly identifies MSC products at every step.  Further investigation found that two mislabelled samples were intentional substitutions and the companies involved had their MSC certificates suspended.


New Cleopatra 33 for a hunting of lobster delivered to Fraserburgh, Scotland

A new Cleopatra boat was delivered to Fraserburgh on the north eastern coast of Scotland. Read more

PVC rain gear - innovating to meet the evolving demands of aquaculture

Aquaculture is an evolving sector and as such presents a range of challenges to suppliers of wet wea... Read more

A progressing cavity pump with EHEDG certification – is that really new?

The EHEDG (European Hygienic Engineering & Design Group) was founded in the last century at the end ... Read more

Economic and environmental advantages of the two-speed gearbox

Finnøy Gear & Propeller’s two- speed gearbox is used on vessels with large differences in power need... Read more

Leading specialist in design and manufacturing of gearboxes and propellers invests in CNC lathe for future product development

Norway- based Finnøy Gear & Propeller have recently invested in a new high- performance CNC lathe ma... Read more


Macduff Ship Design have over the past 10 years spent considerable time specialising in the design o... Read more

View all