Scampi or langoustine

Nephrops norvegicus

3: OK - Needs improvement How we work out the ratings

What to check for

Location

Firth of Clyde and Sound of Jura (FU 13)

Technical location

Atlantic, Northeast, West of Scotland

Caught by

Bottom trawl (otter)

Rating summary

In the Firth of Clyde and the Sound of Jura, Norway lobster is not overfished or subject to overfishing. Some management measures are in place. Current catches exceed recommended limits, and catch limits don't match the stock area. Trawling for Norway lobster can have an impact on seabed habitats, particularly on mud which is subjected to high disturbance by fishing. Bycatch may also be of concern.Rating last updated November 2025.

Technical consultation summary

In the Firth of Clyde and the Sound of Jura, Norway lobster is not overfished or subject to overfishing. Within this Functional Unit, the two subareas have different characteristics and different reference points. However, catch data cannot be separated and so only a combined harvest rate is provided. In both the Firth of Clyde and the Sound of Jura, the stock has decreased since the peak in 2018 but is still well above MSY BTrigger and therefore, not considered in an overfished state. The total catch for both areas combined in 2024 was 4,596 tonnes, representing a 12.5% harvest rate of the overall population (by number). This is below the FMSY level for the Firth of Clyde (15.1%), but in the Sound of Jura, the harvest rate is above FMSY (12%), though still below 1.1 x FMSY (13.2%). These figures indicate that the stock is not currently subject to overfishing. Some management measures are in place. Most recent catches have exceeded recommended limits, and catch limits don't match the stock area. The total catches for Clyde and Jura exceeded advised limits in 2023 (4.4%) and 2024 (1.5%). Trawling for Norway lobster can significantly impact seabed habitats, particularly muddy areas that experience high levels of disturbance from fishing activity. Prolonged disturbance from trawl gear can alter the structure, species composition, and biodiversity of burrowed mud communities. Bycatch in trawls may also be of concern.

How we worked out this Rating

References

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Scampi or langoustine
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