Provided by Dr. Marion Fuller
Florida Department of Agriculture and Consumer Services (FDACS)

Report Dated 05/21/98

Bradenton

Another fly was picked up yesterday, bringing the current total to 374. This one was also outside the core, about a half mile southeast. The area in a 200 meter radius of the fly was treated with ground bait application.

USDA is seeking EPA approval to extend the core to a seven square mile treatment area.

The first "sweep" of ground bait treatment was completed yesterday. The second round began today. Also, commercial crews have begun fruit stripping trees in the areas immediately surrounding larval finds.

Environmental Monitoring - No report.

Health Monitoring - No report

Umatilla

The fly count remained stable at 1314. Ground crews continue to make applications in the buffered areas surrounding sensitive environmental and health sites.

Environmental Monitoring -- The following samples are drift card results, placed during the the second application (May 11)

• Gibson Lake: all samples positive: water's edge (trace), and at 50, 100, 150, and 200 meters from water's edge.
• Umatilla Lake: Negative at waters edge, 50 and 100 meters from water's edge; positive at 150 m from waters edge
• Lakeview Terrace: One sample negative, three samples postive (trace). (To samples on western side, two samples on eastern side)
• Boy's Ranch: One sample positive (trace), three samples negative (sample placement as above)

Water samples following the 5/16 application (third treatment)
Umatilla - BDL
Enola - BDL
Palm - 0.1 - 0.3 (greater than detection limit of 0.1ppb, but less than qantification limit of 0.3 ppb)
Bay - 1.5 ppb
Gibson - 0.3 ppb
S. Twin - 0.3 ppb
East Lake- 0.5 ppb
Crescent - BDL
Geneva - 0.4 ppb
Yale - BDL

Drift monitoring for this same treatment (5/16)

• Bay Lake: Trace at waters edge, BDL at 50 meters out, positive at 50, 100 (both of trace), and 200 meters from waters edge
• Umatilla: BDL at waters edge and 50 m, positive (trace) at 100 m, BDL at 150 and 200 meters from waters edge.
• Crescent: All samples BDL (waters edge, 50, 100, 150, and 200 m from waters edge)
• Lakeview Terrace: All samples BDL
  Boys Ranch School: All samples positive (trace) (S, N, and W side of property)
• Boys Ranch: All samples BDL

Health Monitoring - We've received a report involving a family of four with health related concerns. The Department of Health is following up to assess whether there is a causal relationship.

Note: I received a couple of inquiries regarding the recommendations from the Science Advisory Panel and the fly finds outside the treatment area in Bradenton. There are no plans for aerial application in Bradenton at this time. The Panel recommended that it be considered if the Program directors could objectively determine that fly counts were not decreasing with ground bait treatment. That is highly unlikely - possible, but not likely. And it is much too early to make such an assessment. The additional finds (three flies) outside the core area is not considered an indication that ground treatment is failing. These are single fly finds, and finding them is significant - it warrants our attention along with an expansion of the treatment area, but it does not trigger aerial application.

FDACS - Division of Plant Industy: Mediterranean fruit fly information
USDA APHIS: Mediterranean fruit fly information
UF/IFAS Fact Sheet ENY-809: The Mediterranean Fruit Fly
UF/IFAS Fact Sheet ENY-626: Mediterranean Fruit Fly: What Floridians Need To Know