UK Plant Health Risk Register

Scenario and Pathways

Scenario for Risk Register

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Pest is introduced

Pathway Assessed for Entry to UK

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Fruits or vegetables

Common Pathways

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Plants for planting (except seeds bulbs and tubers)
Fruits or vegetables

Risk Ratings and Current Mitigations

Unmitigated Risks

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Likelihood For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence. See Guidance Document for more Information Likelihood [1 - 5]			3
Entry The Likelihood of movement of the pest into the UK on a pathway and transfer of that pest to a suitable host. See Guidance Document for more Information Entry [1 - 5]			3
Establishment The likelihood of the pest surviving and perpetuating in the UK for the foreseeable future after it has entered. See Guidance Document for more Information Establishment [1 - 5]					5
Spread The rate at which a pest can expand, by natural dispersal only, within an area. See Guidance Document for more Information Spread [1 - 5]		2
Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Impact [1 - 5]			3
Impact - Economic The predicted economic impacts of the pest in the UK. This includes direct effects on yield, quality and possible indirect effects such as trade implications. See Guidance Document for more Information Impact - Economic [1 - 5]			3
Impact - Environmental The proportion of the environmental value of the plant which is likely to be lost through the introduction of the pest. See Guidance Document for more Information Impact - Environmental [1 - 5]	1
Impact - Social The predicted social impacts of a pest in the UK, including effects on tourism, amenities and animal and human health. See Guidance Document for more Information Impact - Social [1 - 5]		2
Value at Risk The value of the hosts or industries at risk from this pest in the UK. See Guidance Document for more Information Value at Risk [1 - 5]				4
Likelihood x Impact The likelihood multiplied by the impact, which shows the risk to the sector. See Guidance Document for more Information Likelihood x Impact [1 - 25]	9
UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information UK Relative Risk Rating [1 - 125]	36

Current Mitigations

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Key mitigation for pest

Regulation

Surveillance

Industry Scheme

Contingency Plan

Awareness

Research

Mitigated Risks

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Likelihood For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence. See Guidance Document for more Information Likelihood [1 - 5]			3
Entry The Likelihood of movement of the pest into the UK on a pathway and transfer of that pest to a suitable host. See Guidance Document for more Information Entry [1 - 5]			3
Establishment The likelihood of the pest surviving and perpetuating in the UK for the foreseeable future after it has entered. See Guidance Document for more Information Establishment [1 - 5]					5
Spread The rate at which a pest can expand, by natural dispersal only, within an area. See Guidance Document for more Information Spread [1 - 5]		2
Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Impact [1 - 5]			3
Impact - Economic The predicted economic impacts of the pest in the UK. This includes direct effects on yield, quality and possible indirect effects such as trade implications. See Guidance Document for more Information Impact - Economic [1 - 5]			3
Impact - Environmental The proportion of the environmental value of the plant which is likely to be lost through the introduction of the pest. See Guidance Document for more Information Impact - Environmental [1 - 5]	1
Impact - Social The predicted social impacts of a pest in the UK, including effects on tourism, amenities and animal and human health. See Guidance Document for more Information Impact - Social [1 - 5]		2
Value at Risk The value of the hosts or industries at risk from this pest in the UK. See Guidance Document for more Information Value at Risk [1 - 5]				4
Likelihood x Impact The likelihood multiplied by the impact, which shows the risk to the sector. See Guidance Document for more Information Likelihood x Impact [1 - 25]	9
UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information UK Relative Risk Rating [1 - 125]	36

Proposed Actions

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Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Distribution and Pest Details

Distribution

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Country / Territory		Status	Notes
Europe
	United Kingdom	Absent
	Spain	Present (Limited)	Canary Islands
Africa
	Congo (Democratic Rep.)	Present
	Central African Republic	Present
	Chad	Present
	Cote d'Ivoire	Present
	Egypt	Present
	Madagascar	Present
	Mali	Present
	Nigeria	Present
	Sierra Leone	Present
	Sudan	Present
	Uganda	Present
	Zimbabwe	Present
	Kenya	Present
	Malawi	Present
Asia
	Brunei	Present
	India	Present
	Iran	Present
	Iraq	Present
	Israel	Present
	Malaysia	Present
	Saudi Arabia	Present
	Thailand	Present
	China	Present
	Pakistan	Present
	Philippines	Present

Type of Pest

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Insect (Hemiptera)

Host or Industry at Risk

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Total protected cultivation

Major Hosts

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Annona glabra L.
Arbutus L.
Bidens bipinnata L.
Cichorium endivia Linnaeus
Cucumis melo L.
Cucumis sativus L.
Cucurbita maxima Duch.
Cucurbita pepo L.
Cucurbitaceae (family)
Dolichos lablab L.
Euphorbia L.
Ipomoea batatas (L.) Poir./Lam.
Ipomoea macrantha Roem. & Schult.
Solanum lycopersicum L.
Manilkara zapota (Linnaeus) Van Royen
Murraya koenigii (L.) Spreng./Sprague/Kurz
Phaseolus vulgaris L.
Phyllanthus L.
Psidium L.
Ricinus communis L.
Rosa L.
Solanum melongena L.
Solanum tuberosum L.
Sonchus oleraceus L.
Citrus
Gossypium hirsutum

Threats to Protected Cultivation

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Only protected crops

Forest Tree Pests and Pathogens

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N/A

Further Information

PRA

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PRA Availability

UK (2005) EPPO (2000)

Regulation and EPPO listing

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Not currently listed

Actions Indicated

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Action

Statutory action for findings on plants for planting

General Comments

A polyphagous whitefly of crops and some ornamentals, present throughout some of Asia and Africa. Causes minimal impacts through feeding activity, but may be able to vector tomato yellow leaf curl virus, which is highly damaging.

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Department for Environment, Food & Rural Affairs

Departmentfor EnvironmentFood & Rural Affairs

UK Risk Register Details for Trialeurodes ricini

Common Names

Scenario and Pathways

Scenario for Risk Register

Pathway Assessed for Entry to UK

Common Pathways

Risk Ratings and Current Mitigations

Unmitigated Risks

Current Mitigations

Key mitigation for pest

Regulation

Surveillance

Industry Scheme

Contingency Plan

Awareness

Research

Mitigated Risks

Proposed Actions

Proposed Actions

Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Distribution and Pest Details

Distribution

Type of Pest

Host or Industry at Risk

Major Hosts

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA

PRA Availability

Regulation and EPPO listing

Actions Indicated

Action

General Comments

Further Information

Uncertainty

Key uncertainty for pest

Climate

Current distribution

Hosts

Impact

Pathways

Regulation

Taxonomy

UK distribution

Risk Records for this Pest

Department
for Environment
Food & Rural Affairs