European Eel (Anguilla anguilla)

European Eel (Anguilla anguilla)

Anguilla anguilla

Avg Lifespan

7 - 85 years

Size

60-80cm up to 1m

Status

Critically Endangered on the IUCN Red List of Threatened Species. Listed as a priority species under the UK Post-2010 Biodiversity Framework. Protected by legislation in Ireland from commercial fishing and recreational angling.

Surveying Services

Overview

The European eel is a catadromous migratory eel species that is currently facing severe population declines across its migratory route. Declines over the last 40 years are attributed to habitat loss and degradation, the construction of dams, decrease in water quality, overfishing, disease and climate change. In appearance, the eel looks smooth and lacks obvious gills and scales. It can be found in rivers and ditches. They range in colour from silver to olive-green and have yellow bellies.

Sampling Advice

  • Avoid reusing equipment from the kits for different samples to limit the risk of contamination between sites.
  • Avoid stepping into the water – this can stir up sediment, throwing up sediment DNA and any inhibitory molecules present. Sediment may clog the filter and prevent sufficient volumes of water being filtered.

Surveying Season

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eDNA

After spawning, European eels spend around 8 years in UK waters before leaving for the Sargasso Sea, so can be surveyed all-year-round. Higher periods of activity may be observed between mid-March and October.

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