A dog is being trained to detect invasive sea squirt in Scotland
The story at a glance
Sgiath is being trained to find invasive carpet sea squirt by scent during coastal searches in Scotland. Reports say she has located hundreds of colonies, but do not provide independent performance data.23
The work is one possible addition to marine monitoring. Scottish Government research has also used environmental DNA to survey the species, and highlights the importance of standardised monitoring protocols.5
The story in brief
What you need to know
- Sgiath is a six-year-old Labrador working with marine ecologist Dr Texa Sim. Reporting describes her searching for the sea squirt by scent, including during low-tide coastal surveys.23
- BBC and Countryfile reporting says the dog has found hundreds of colonies. Those reports do not give a detection rate or independent validation results, so the figure does not by itself show how reliably the method works.12
- The Scottish Government identifies Didemnum vexillum as an invasive non-native species. It was first found in Scotland in the Firth of Clyde in 2009 and confirmed in Loch Creran in 2016.4
- The species can grow on natural and artificial hard surfaces and spread through larvae and fragments. Government material also documents potential impacts on marine habitats and aquaculture.4
- Claims that Sgiath is the first dog to hunt sea squirts vary in scope: reports describe her as possibly the first in the UK or the world. The sources reviewed do not independently establish that distinction.123
Conservation context
Why this matters
Finding invasive species is part of monitoring their distribution. A dog could offer an additional way to search for carpet sea squirt, but the reporting reviewed does not show whether dog-assisted searches have improved detection or control.235
The developing story
What happens next
The reporting reviewed does not set out a timetable for evaluating the project. To assess the method, further evidence would need to establish how alerts are checked and how repeatable detection is across different search conditions.235
Established evidence
What we know
- Sgiath is being trained to detect carpet sea squirt by scent on Scotland’s coast.23
- Reports say she has located hundreds of colonies, but provide no quantified detection rate.12
- The Scottish Government’s environmental DNA pilot detected the species mainly near known colonies and also at Dunstaffnage Marina, where colonies were confirmed during a later rapid assessment.5
- The government study says standardised protocols are important for robust monitoring.5
Open questions
What we don't know
- The reporting reviewed does not say whether Sgiath’s alerts are systematically confirmed by visual inspection, laboratory analysis or another independent method.23
- There are no reported figures on the dog’s accuracy or repeatability across shorelines, weather conditions or different colony densities.23
- The available sources do not establish whether dog-assisted searches have led to earlier detection or measurable changes in management, spread or control costs.235
- The sources reviewed do not provide a peer-reviewed evaluation or a project protocol for Sgiath’s detection work.23
Source coverage
