ScienceDaily (July 4, 2007) — A new combination of fruit fly controls being tested by the Agricultural Research Service (ARS) for use against oriental and melon fruit flies is proving to be more effective, longer lasting and less hazardous to the environment than current technologies.

Such a product could offer significant benefits to California—which spends more than $15 million a year on eradication programs to keep exotic fruit flies from becoming endemic—as well as to Florida, which is in a similar situation, and Hawaii, which has been suffering from exotic fruit flies for nearly 100 years.

The most successful oriental fruit fly control tested by ARS entomologist Roger Vargas—who's with the agency's U.S. Pacific Basin Agricultural Research Center in Hilo, Hawaii—is SPLAT-MAT, a combination of a substance called SPLAT and low doses of a toxicant called spinosad.

SPLAT is a waxy emulsion matrix containing the fruit fly lures methyl eugenol or cuelure. The "MAT" part of the name indicates that SPLAT-MAT attracts and kills only male fruit flies, making it a "male annihilation technique" (MAT) product.

SPLAT-MAT can be sprayed instead of confined to traps, and the formulation, which slowly releases semiochemical attractants, is exceptionally long lasting, even after rain. The product is being commercially developed by ISCA Technologies and Dow AgroSciences.

In initial tests with methyl eugenol, 10 to 12 weeks after application, SPLAT-MAT captured nearly 14 times as many oriental fruit flies as the carrier Min-U-Gel with Naled, which is the current product used against this species of fruit fly.

Spinosad—which comes from the soil bacterium Saccharopolyspora spinosa—is more environmentally friendly than the products currently used because it is considered to pose less risk to mammals, birds, fish and beneficial insects.

SPLAT-MAT can be applied by shooting it at telephone poles, tree trunks, stakes or other surfaces with a high-powered spray gun or even regular spray equipment. That speeds up delivery and eliminates the need to establish or replenish traps. It also lasts longer than gels currently in use.

ARS is the U.S. Department of Agriculture's chief research agency.

ARS studies have found SPLAT-MAT, a waxy emulsion containing a fruit fly lure and low doses of the pesticide spinosad, is effective against oriental fruit flies. SPLAT-MAT can be easily applied with spray equipment in dollops that stick to branches or telephone poles, doing away with the need for traps. (Credit: Image courtesy ISCA Technologies)

Related Stories

Foreign Fruit Fly Suppression Program Grows In Hawaii (Jan. 5, 2005) — Fruit grower Hugo Butler of Kula, Maui, used to feed most of his peaches, loquats and persimmons to the hogs because the fruit was too fly-damaged to sell. But that changed once he joined the ...  > read more

Success Controlling Medfly (July 26, 2005) — A lure developed by the Agricultural Research Service and Suterra LLC is helping keep the Mediterranean fruit fly out of the United States and giving other countries an effective, environmentally ...  > read more

For Best Pest Detection, Suit The Attractant To The Fruit Fly (Jan. 24, 2008) — Several fruit fly species that plague Latin American fruit growers are also quarantine pests in the United States. To evaluate lures used to monitor fruit flies in production areas, scientists ...  > read more

University of Iowa Researcher Studies Deafness In Fruit Flies, Humans (May 10, 2005) — University of Iowa Biological Sciences Professor Daniel F. Eberl and his colleagues at Duke University have uncovered genetic defects leading to deafness in fruit flies that may shed light on ...  > read more

Search ScienceDaily

Cloned Apples