Gypsy Moth - The worst effects of gypsy moths occur at high...

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Gypsy Moth Management The gypsy moth, Lymantria dispar , is a devastating forest pest. It feeds on the foliage of hundreds of plant species in North America, but most commonly on oaks and aspen. In heavily infested areas, trees may become completely defoliated. In North America, the current gypsy moth range covers all of the northeastern United States, part of the Southeast and Midwest, and sections of eastern Canada. The gypsy moth’s range is expanding at a rate of about 21 kilometers a year. Scientists are working to slow this expannsion, using a number of methods. Eradication In areas without established gypsy moth populations, pheromone traps are used to detect new populations. State and federal agencies can then work together to eradicate any newly detected infestations. Eradication methods can include chemical or biological pesticides and mass- trapping. Suppression
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Unformatted text preview: The worst effects of gypsy moths occur at high population densities. In areas that are already highly infested, suppressing the population as much as possible can minimize damage to trees. This is usually accomplished using ground applications of pesticides to individual trees, and aerial application of pesticides to larger areas. Biological Control In an effort to minimize the use of pesticides, research scientists are focusing on the gypsy moth’s natural enemies. Some, such as birds, do not have a substantial effect on populations. However, the following natural agents can cause considerable mortality: • insect parasitoids and predators • small mammals, including deer mice and shrews • wilt, a disease caused by the nucleopolyhedrosis virus • an entomopathogenic fungus species For more information, contact Michael Urban at 555-555-5555....
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This note was uploaded on 04/26/2009 for the course BITM 2701 taught by Professor Shim during the Spring '09 term at Seton Hall.

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