EUROPEAN AND MEDITERRANEAN PLANT PROTECTION ORGANIZATION
ЕВРОПЕЙСКАЯ И СРЕДИЗЕМНОМОРСКАЯ ОРГАНИЗАЦИЯ ПО КАРАНТИНУ И ЗАЩИТЕ РАСТЕНИЙ
ORGANIZATION EUROPEENNE ET MEDITERRANEENNE POUR LA PROTECTION DES PLANTES
05/11896
WPPR point 12.2
Report of a Pest Risk Management: Lymantria mathura
This summary presents the conclusions of the pest risk management which has been conducted on the pest, according to EPPO Standard PP 5/4(1) Pest Risk Management Scheme.
The text in italics is to guide the assessor as to what information should be presented, it will not appear on the final summary.
Pest:
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Lymantria mathura Moore (Lepidoptera: Lymantriidae)
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Assessors:
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EPPO Panel on Quarantine Pests for Forestry revised EPPO Secretariat
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Date:
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2005-05-31
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IDENTIFICATION OF THE PATHWAYS
1 Pathways studied in the pest risk management
Pathway 1: Plants for planting
Plants for planting of host trees may carry all stages of the life cycle of the pest on bark and branches.
Pathway 2: Cut branches
Cut branches of host trees may carry all stages of the life cycle of the pest on them.
Pathway 3: Wood with bark
Wood with bark of different trees (not only of host species) may carry eggs of the pest. Egg masses are small and well hidden, which makes them difficult to detect. During outbreaks especially, larvae may be associated with wood containing bark and may be hitchhikers on other products.
Pathway 4: Packaging, conveyances, containers
Other article may carry eggs of the pest in crevasses. Egg masses are small and well hidden, which makes them difficult to detect. During outbreaks especially, larvae may be hitchhikers on various articles.
2 Other pathways
L. mathura can naturally spread by flight of adult moths, but the Panel did not consider this case because of a long distance between the actual area of distribution of the pest and the endangered area. It can nevertheless be noted that this pathway may present a risk.
IDENTIFICation of POSSIBLE measures for pathways
Pathway 1: Plants for planting of deciduous trees originating in countries where Lymantria mathura occurs
Measures related to consignments:
The following measures have been identified:
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plants for planting should be free from leaves (this measure reduces the risk but is not sufficient and should be combined with other measures);
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fumigation;
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inspection.
Measures related to the crop or to places of production
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plants for planting should be grown in specified protected conditions;
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area freedom for Lymantria mathura.
Pathway 2: Cut branches of deciduous trees originating in countries where Lymantria mathura occurs
The risk for cut branches was recognised (because of a very low movement of consignments) as acceptable, consequently no measures have been identified.
Pathway 3: Wood with bark originating in countries where Lymantria mathura occurs
Measures related to consignments:
The following measures have been identified:
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debarking;
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fumigation;
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kiln drying;
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heat treatment;
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inspection.
Measures related to the crop or to places of production
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area freedom for Lymantria mathura.
Pathway 4: Other articles originating in countries where Lymantria mathura occurs
Other articles were recognised as acceptable because no appropriate measures have been identified.
OTHER POSSIBLE MEASURES
Because of the potential for natural spread surveys may be conducted in the areas near to infested areas, using light traps to detect entry of the pest which would be followed by eradication campaigns. Control measures can also be applied in adjoining infested areas, especially during outbreaks, to limit spread.
CONCLUSION: SELECTION OF MEASURES
Plants for planting of Quercus, Juglans, Malus, Ulmus, Tilia, Salix, Betula, Castanea and other deciduous trees and shrubs originating in countries where Lymantria mathura occurs
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PC and, if appropriate, RC
Free from leaves
Area freedom for Lymantria mathura
or
Plants must be grown in specified protected conditions
or
Fumigation
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Non-squared wood of Quercus, Juglans, Malus, Ulmus, Tilia, Salix, Betula, Castanea and other deciduous trees originating in countries where Lymantria mathura occurs
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PC and, if appropriate, RC
Area freedom for Lymantria mathura
or
Debarking
or
Fumigation
or
Kiln drying
or
Heat treatment
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Appendix
For each possible category of measures in the pest risk management scheme, this table could identify specifically the ones which were considered suitable ("possible" in bold) and the ones which were not suitable (with a brief justification)
The Panel should decide whether such a summary table is useful, and whether it belongs to the pest risk management, or to the report of the pest risk management
categories of MeasureS
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Plants for planting
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Non squared wood
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Detection of the pest in consignments by inspection or testing
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|
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visual inspection
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yes
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yes
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specified testing
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no
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no
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import under special licence/permit and post-entry quarantine
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no
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no
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Removal of the pest from the consignment by treatment or other phytosanitary procedures
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|
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specified treatment
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Fumigation
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Fumigation, Kiln drying, Heat treatment
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removal of parts of plants from the consignment
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Free from leaves
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Debarking
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Prevention of establishment by limiting the use of the consignment
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|
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import under special licence/permit and specified restrictions
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no
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no
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Prevention of infestation of the commodity
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|
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specified treatment and/or period of treatment (crop)
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no
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no
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consignment should be composed of specified cultivars
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not suitable
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not suitable
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specified protected cultivation
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yes
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no
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specified age of plant, growth stage or time of year of harvest
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not relevant
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no
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specific handling/packing methods
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not relevant
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not relevant
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certification scheme
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no
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no
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Establishment and maintenance of pest freedom of a crop, place of production or area
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|
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pest freedom of the crop
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no
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no
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pest-free place of production
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no
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no
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pest-free place of production and appropriate buffer zone
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no
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no
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pest-free area
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yes
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yes
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Prohibition
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no
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no
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Internal measures
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surveillance and/or eradication campaign
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yes
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yes
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