The department plans to spray about 8,800 acres with the insecticide commonly known as Btk, a bacterial species that has been used on gypsy moths
in Oregon since 1984.
As part of that effort, they tested 50 strains of Bt known to be toxic to gypsy moths
, including kurstaki, and found they could be divided into two groups: those that produce an enzyme called "urease" and those that don't.
Indiana Department of Natural Resources and USDA Forest Service applied pheromone flakes, disparlure, to a very low-level gypsy moth
(Lymantria dispar) population in south-central Indiana in June 2008 to eradicate the infestation.
The gypsy moth
is native to Europe and was accidentally introduced to North America in 1868 by a visiting professor at Harvard University.
are a major forest pest found in Europe, parts of Asia, and introduced into North America.
Since the females cannot disperse, larval ballooning and the intertree movements of late instar larvae are the only natural dispersal mechanisms for gypsy moths
The US banned the import of raw Siberian logs in 1990, citing among other things the threat to the Douglas fir by the Asian gypsy moth
and the spruce bark beetle.
alter the habitat, and may reduce necessary resources.
This study examines a commodity which exhibits these properties--the control of gypsy moths
, a nuisance pest which defoliates trees.
Apparently, these gypsy moths
hitchhiked on grain ships from ports in the old "Soviet Union.
were brought to New York by a French naturalist in 1869, escaped from his lab, and bred out of control because none of their natural predators lived there.
In Eugene, the state Department of Agriculture sprayed 625 acres in the Old Dillard Road vicinity last May after six gypsy moths
were found in that area in 2008.
The researchers fed gypsy moths
antibiotics that wiped out their normal gut bacteria.
VENTURA - County officials hope the two gypsy moths
found earlier this month near Ojai are isolated cases, since no additional findings have been made of the oak-tree-destroying pest.
Finally, induction of tannins in oaks defoliated by gypsy moths
in the northeastern United States is usually reported in July (Schultz and Baldwin 1982, Hunter and Schultz 1995), whereas nearly all virus transmission occurs in May and June.