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UK Risk Register Details for Xiphinema chambersi

This record was last updated on 24/05/2023

Common Names

  • Dagger nematode

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Plants for planting (with soil)

Common Pathways

  • show / hide
  • Plants for planting (except seeds bulbs and tubers)
  • Bulbs or tubers
  • Soil/growing medium

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 1
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 6
UK Relative Risk Rating [1 - 125] 30

Current Mitigations

  • show / hide

Key mitigation for pest

Prohibition of key pathways



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 1
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 20

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
United Kingdom Absent
North America
Canada Present
United States Present
Japan Present
South Korea Present

Type of Pest

  • Nematode (Dorylaimida)

Host or Industry at Risk

  • show / hide

Most outdoor trees and plants

Major Hosts

  • Abies holophylla Maxim.
  • Camellia sinensis (L.) O.Kuntze
  • Cynodon dactylon (L.) Pers.
  • Deciduous trees
  • Fagus grandifolia Ehrh.
  • Fragaria L.
  • Fraxinus americana L.
  • Ligustrum japonicum Thunb.
  • Liquidambar styraciflua L.
  • Pinus densiflora Sieb. & Zucc.
  • Prunus virginiana L.
  • Quercus acutissima Carruth.
  • Quercus palustris Muenchh./Du Roi
  • Quercus phillyraeoides Gray
  • Quercus rubra L.
  • Quercus stenophyla (Blume) Makino
  • Quercus virginiana Mill.
  • Tsuga canadensis (L.) Carr.

Threats to Protected Cultivation

  • Both protected crops and outdoor production

Forest Tree Pests and Pathogens

  • Broadleaved & Coniferous

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Not currently listed

Actions Indicated

  • show / hide


No statutory action

General Comments

Nematode pest moving in trade. Present in parts of North America and Asia. Import restrictions on soil and growing media provide some mitigation against risk of introduction.

Further Information


  • show / hide

Key uncertainty for pest

Full host range and geographical distribution


Current distribution






UK distribution

Risk Records for this Pest