THE NEW MINISTRY: STRATEGY AND INNOVATION · • TAG formed to provide technical advice (B3)...
Transcript of THE NEW MINISTRY: STRATEGY AND INNOVATION · • TAG formed to provide technical advice (B3)...
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www.mpi.govt.nz
Eucalyptus leaf beetle response
Emmanuel Yamoah
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Outline
• The incursion
• Surveillance
• Response
• Next activities
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The incursion
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Taxonomy of the organism
PHEL scientists obtained samples for ID
• Order : Coleoptera
• Family: Chrysomelidae
• Tribe: Paropsini
• Genus : Paropsisterna
• Species: beata
• Synonyms: Chrysophtharta beata, Paropsis beata
• Common name: Eucalyptus leaf beetle
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Biosecurity risk
• Host: Eucalyptus spp.
• Impact: Defoliation & reduces pulp yield
• Annual value of pulp: >600 m (2011)
• CBA: Losses up to $23 m 20 years
• Environmental: Amenity planting
Location of commercial and non-commercial
Eucalyptus forests in New Zealand (22,000 ha)
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Response structure
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???
• Incursion pathway?
• Since when?
• Extent of spread?
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• Eradicate the population if surveillance confirms limited
distribution
• Liaise with industry to ensure they are informed about the
response
• Manage the biosecurity risk to New Zealand’s Eucalyptus trees
Objectives & outcome
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Surveillance
B3 consultation (Dr John Kean)
Three options
1. 2-3 km
2. 0-500 m
3. 500m-3 km
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Surveillance strategy
• Factsheet distribution
– Whitemans Valley
– Eucalyptus growers
– NZFFA website
– MPI website
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Surveillance options 1 & 2
Number of host Number of host plants to sample
Site Id plants present felling climbing ground visuals
1 2 0 1 0
2 10 0 5 1
3 1 0 1 0
4 30 1 16 1
5 16 1 9 0
Sample method: felling climbing ground visuals
Sample sensitivity: 90% 50% 10%
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Surveillance: EPV and climbing
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Distribution
• No P. beata found within 2-3km zone
• P. beata found within 100m radius
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Response options & TAG
• Option 1: Eradicate the population
• Option 2: Control and contain population
• Option 3: Baseline scenario
• TAG formed to provide technical advice (B3)
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Response option: Eradication
• Ground spraying: Talstar (bifenthrin)
• Aerial spraying: Dominex 100
• Meeting with residents
• Kept residents updated
• Public notification
• Develop risk management plan
• Consultation with MOH & Public Health
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Techniques to minimise spray drift
• Spray drift calibration by Scion
• Spot spraying technique by Scion
(MPI & B3 co funded)
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Spraying programme
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Ground & aerial sprayings schedule
Month (2013/14) Ground Aerial
April √ √
May √ √
August √ X
September √ X
October √ √
November X √
December √ X
February 14 √ √
March 14 X √
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Risk mitigation measures
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Post-spraying surveillance
• Tree climbing
• Tree felling
• Ground visuals
• Bark searching
• Sticky tapes
• Light trapping
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Bark stripping & tree felling
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Results
• No P. beata found during Dec 2013 and Mar 2014 surveys
• No feeding damage detected on new leaves
• Several Paropsis larvae found on non sprayed trees.
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Activity Responsibility Date Status
Surveillance within 2-3 km zone Brent Rogan 22 Feb 2013 Completed
Pre spray surveillance Brent Rogan 18 Apr 2013 Completed
Aerial and ground spraying Don Hammond 26 Apr 2013 Completed
Aerial and ground spraying Don Hammond 08 May 2013 Completed
Removal of loose barks Don Hammond 13 Aug 2013 Completed
Ground spraying Don Hammond 13 Sept 2013 Completed
Apply sticky bands to trees Don Hammond 13 Sept 2013 Completed
Surveillance (500m radius) Brent Rogan 04 Oct 2013 Completed*
Ground spraying Don Hammond 01 Oct 2013 Completed
First aerial Don Hammond 19 Oct 2013 Completed
Second aerial Don Hammond 02 Nov 2013 Completed
Sticky tapes surveillance Brent Rogan/Don 25 Nov 2013 Completed
Surveillance Brent Rogan Nov-Dec 2013 Completed
Factsheet distribution Response team 29 Nov 2013 Completed
Light trapping surveillance Don Hammond Dec-Jan 2014 Completed
Ground spraying Don Hammond 18 Dec 2013 Completed
Aerial spraying Don Hammond 24 Feb 2014 Completed
Ground spraying Don Hammond 24 Feb 2014 Completed
Aerial spraying Don Hammond 03 Mar 2014 Completed
Surveillance Brent Rogan 17 Mar 2014 Completed
Ground spraying Don Hammond 09 Jun 2014
Surveillance 2km radius Brent Rogan 01 Jul 2014
Surveillance 500m Brent Rogan Nov 2014
Surveillance 500m Brent Rogan Feb 2015
Surveillance 500m Brent Rogan Oct 2015
Declare eradication Emmanuel Nov 2015
Close response Emmanuel Dec 2015
Operational activity timeline for ELB response
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What next: Surveillance
Activity Due date
Ground spraying 09 Jun 2014
Surveillance 2km radius 01 Jul 2014
Surveillance 500m Nov 2014
Surveillance 500m Feb 2015
Surveillance 500m Oct 2015
Close response (eradication) Nov 2015
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Success of response
• Good science
Determining insect overwintering sites
Spot spraying technique and spray drift modelling
• Communication with residents & industry
• Resident’s support
• Support from RSL and TAG
• Insect behaviour: poor flying insect
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Acknowledgements
• Residents
• AsureQuality
• Hammond Resource Management Ltd
• SPS Biosecurity – surveillance
• Heli Resources – aerial spraying
• NZ Biosecurity Services - ground spraying
• Scion – Spot spraying & spray drift calibration
• TAG
• John Kean (statistics)
• Projex Maintenance (House washing)
• Downer Tree Services - tree climbing and felling
• MPI Response team
• B3 Research