Eucalyptus leaf beetle response

Transcription

1 Eucalyptus leaf beetle response Emmanuel Yamoah

2 Outline The incursion Surveillance Response Next activities

3 The incursion

4 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

5 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)

6 Response structure

7 ??? Incursion pathway? Since when? Extent of spread?

8 Objectives & outcome 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

9 Surveillance B3 consultation (Dr John Kean) Three options km m m-3 km

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12 Surveillance strategy Factsheet distribution Whitemans Valley Eucalyptus growers NZFFA website MPI website

13 Surveillance options 1 & 2 Sample method: felling climbing ground visuals Sample sensitivity: 90% 50% 10% Number of host Number of host plants to sample Site Id plants present felling climbing ground visuals

14 Surveillance: EPV and climbing

15 Distribution No P. beata found within 2-3km zone P. beata found within 100m radius

16 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)

17 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

18 Techniques to minimise spray drift Spray drift calibration by Scion Spot spraying technique by Scion (MPI & B3 co funded)

19 Spraying programme

20 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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22 Risk mitigation measures

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24 Post-spraying surveillance Tree climbing Tree felling Ground visuals Bark searching Sticky tapes Light trapping

25 Bark stripping & tree felling

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27 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.

28 Operational activity timeline for ELB response 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

29 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

30 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

31 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