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Important: Please READ[/b]
Spent a half hour typing a post and then lost it, so here goes again. :roll:
I just spent about 45 minutes on the phone with
Dr. Jim Cilek of Florida ANM University in Panama City Beach, Professor of Entomology and he specifically has intensive experience with the
Dog Fly Program in Research. The Dog Fly program consults to the
State of Florida Agriculture and Consumer Services, but is
NOT a part or division of such. The State is responsible for the spraying.
Dr. Cilek was quite informative and a real gentleman, and understood our concerns. He is also quoted as a reference in a previous link I posted, and I didn't realize it until after I spoke to him.
This is the information I garnered regarding the rationale for aerial spraying, where dog flies originate, what is being done, and what you can do in your surroundings.
For starters, according to Dr. Cilek, dog flies are extremely difficult to track as far as where they are originating from. It is known that they are originating from dairy and cattle farmers in Northern Florida, parts of Alabama, and possibly as far as Georgia. The dog flies are carried in by cold fronts on northerly winds. The more cold fronts, the more flies.
Where they wind up (hot pockets) depends on the winds.
It is also unclear whether when they come over the bay if they are flying over trees, how high they can get, etc. Therefore, trying to stop them before they reach the beaches with other methods is highly difficult.
Aerial spraying is
not done on a calendar schedule. It is done based on reports from daily inspections of the beaches. This is done by inspectors with long pants on and time how many flies land on them within a given period, and if it exceeds 5, which is considered a nusiance, aerial spraying is suggested. There may be not be any spraying one season, and some the next season dependent on how many cold fronts and flies survive to the beach.
You may ask why not try to stop the flies at the source? I asked this question, and according to Dr. Cilek, dog flies bite cows on the lower limbs. It is difficult without applying toxic chemicals to the cow to do this.
Further, there is something available to farmers which is inserted in the cow, but the cost is expensive, lasts 3-4 months only (some do however) and farmers really have no motivation short of their cow hands or milkers complaining of bites or inspectors citing them.
Regarding the aerial spraying, Dr. Cilek says based on the research and dog fly population now compared to many years ago, that the amount of spray used is negligible, as well as studies conducted on what is a safe amount. Spraying if needed based on the amounts determined to be a nusiance is done between 10 am-12 pm according to wind currents.
(People I am just stating what was told to me, so don't shoot the messenger)
I do want to point out though that Dr. Cilek is also involved in research in using alternative methods. He has studied solar panel electrocution traps, there may be a research study in St. Andrews Park with adhesive panels, and he also discovered that the beach ball trap can be effective in your own yards and surrounding in controlling populations.
However, none of these traps and alternatives will control the population of dog flies to the extent needed due to the above stated (wind and where they are coming from can not not be pre-determined.)
I will post below how to use a beach ball as a trap for dog flies here and on a separate thread.
As far as the traps I see in New Jersey, Dr. Cilek explained those are for green flies, not dog flies (so apologies for my error)
Dr. Cilek may come on here and post information, I hope he does, makes corrections or adds to my post, but if anyone has any further questions, he welcomes them, and has given me permission to post his
e-mail address.
cilek_J@popmail.firn.edu
You can also view information about dog flies and research at
http://www.pherec.org
specifically ENT guides.
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Beach Ball Dog Fly Traps
Dog flies like other insects can not see colors, so a red, white and blue beach ball will attract more flies due to variations in shades which flies are attracted to. Coat the beach ball with tanglefoot adhesive (can be purchased at Ace Hardware)
It's best to hang on a tree limb or tethered somewhere higher up, and make sure that has the ability to swing somewhat. Dr. Cilek believes the flies ae also attracted to the shimmer.