UK Risk Register Details for Tylenchorhynchus claytoni

Pest has been archived

This pest has been assessed for the Risk Register and is considered to pose a low risk to the UK. The information on this pest was correct as of 14/08/2020, but is no longer actively maintained. It will only be updated if new information is received which indicates the potential for a significant increase in risk to the UK.

This record was last updated on 14/08/2020

Common Names

  • Stunt nematode
  • Tobacco stunt nematode

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest spreads to maximum extent

Pathway Assessed for Entry to UK

  • show / hide

Common Pathways

  • show / hide
This section is currently being developed as part of the next phase of the Risk Register.

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 1
Spread [1 - 5] 1
Impact [1 - 5] 3
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 3
UK Relative Risk Rating [1 - 125] 15

Current Mitigations

  • show / hide

Key mitigation for pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 1
Spread [1 - 5] 1
Impact [1 - 5] 3
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 3
UK Relative Risk Rating [1 - 125] 15

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country Status Notes
Belgium Present
Bulgaria Present
Cyprus Present
Denmark Present
Germany Present
Netherlands Present
Switzerland Present
Turkey Present
United Kingdom Present (Limited)
North America
Canada Present
United States Present
Australia Present
South Africa Present
Bangladesh Present
China Present
India Present
Japan Present
South Korea Present
Central America
Honduras Present

Type of Pest

  • Nematode (Tylenchida)

Host or Industry at Risk

  • show / hide

Zea mays, Partial outdoor production, Forestry

Major Hosts

  • Avena sativa L.
  • Glycine max (L.) Merr.
  • Gossypium L.
  • Gramineae Adans., Nom. Cons.
  • Lolium L.
  • Medicago sativa L.
  • Nandina Thunb.
  • Nicotiana tabacum L.
  • Olea europaea Linnaeus
  • Oryza sativa L.
  • Paeonia L.
  • Photinia glabra (Thunb.) Maxim.
  • Pinus L.
  • Pisum sativum Linnaeus
  • Polystichum adiantiforme (G.Forst.) J.Sm.
  • Prunus persica Batsch
  • Rhododendron L.
  • Saccharum officinarum L.
  • Secale cereale L.
  • Solanum L.
  • Trifolium L.
  • Zea mays L.
  • Rhododendron (Azalea)

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Coniferous

Further Information

PRA Availability

UK (1996)

Regulation and EPPO listing

  • show / hide

Not currently listed

Actions Indicated

  • show / hide


Need to raise awareness amongst sectors at risk.

General Comments

Polyphagous nematode pest already present in UK, particularly damaging to Azaleas at present, but could move into crops such as maize and forestry crops (Pinus) in the longer term. Need to raise awareness amongst relevant sectors.