California Dept. of Food & Agriculture Sacramento, CA · Killing & Preservation Agent - 50/50...
Transcript of California Dept. of Food & Agriculture Sacramento, CA · Killing & Preservation Agent - 50/50...
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California Dept. of Food & Agriculture
Sacramento, CA
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SAPW is known from Central and South America, the Caribbean, and southern Mexico. Vectors Bursaphelenchus cocophilus(Cobb), red ring nematode, which causes red ring disease and can be lethal to coconut and oil palms.
December 2010 – Resident in Tijuana, Mexico, posted pictures on a website of damage CIDP and a large weevil, which appeared to be SAPW. Reported sighting was near San Ysidro border crossing, ca. 70 miles south of Laguna Beach.
February 2011 – CDFA deployed traps near Mexican border.
May 2011 – Single adult male weevil trapped in San Ysidro, and identified as R. palmarum. Weevil checked for red ring nematode, with negative results. Additional traps were placed in a 2.5 mile radius.
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2012-2013
997 traps placed in palm producing counties
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Killing & Preservation Agent
- 50/50 Solution of Water
and Low-Tox Antifreeze.
PW Aggregation Lure
(Species Specific
Pheromone).
Lure Enhancer
(Ethyl Acetate).
Food Source – Apples.
PW TRAP BAITING
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Traps placed 6 to 7
feet above the
ground.
Traps placed on any
palm, except Date
and Canary Island
Date Palms.
Traps may also be
placed on non-host
trees.
PW TRAP PLACEMENT
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July 2011 – 5 SAPW trapped in San Ysidro. Additional traps
deployed in eastern San Diego County and in Imperial County.
August 2011 –1 SAPW trapped 65miles east in Imperial County
(Calexico), near international border.
2011 to 2013 Totals: San Diego County = 110, Imperial County =
2.
No infested trees detected, and no detections of red ring
nematode.
All finds are within 10 miles of international border with Mexico.
SAPW trapped in Texas in May 2012 near border with Mexico.
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SAPW - San Diego County
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SAPW - Imperial County
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IF YOU SUSPECT YOU HAVE SEEN THIS INSECT PLEASE CALL THE CALIFORNIA DEPARTMENT OF FOOD AND AGRICULTURE HOTLINE:
1-800-491-1899
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Weevil received in vial containing water. Liquid of trap in separate container• Examine collected water for nematodes• Examine liquid from trap for nematodes
Remove Weevil and rinse with water• Dissect Weevil and tease-out genital capsule in water• Morphological examination of nematodes • DNA – PCR and Sequencing
Document results
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Inspect base of tree for dead adults or fallen cocoons.
Inspect crown for damage to palm leaf bases and clipped fronds.
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Leaf clipping from feeding on leaf shoot
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Leaf sheath damage from larval feeding
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Larval damage to base of leaf.
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February 2015 February 2016
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Visual Survey
• Time consuming
• Expensive
• Risky?
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Questions?