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Submitted to: National Integrated Pest Management Workshop for Arthropod Pests of Livestock
Publication Type: Proceedings Publication Acceptance Date: 5/11/1995 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: The horn fly is an introduced blood-sucking pest of cattle that causes annoyance, loss of blood, and reduced vitality. Population densities in excess of 400 flies per animal have potential for endangering the health of animals. In some areas of the country, several thousand flies per animal may be found on cattle during the peak horn fly season. Horn flies are active 3-4 months of the year in the northern part of the country with som fly activity present during most of the year in the southernmost areas. Organophosphates, pyrethroids, and avermectins are available for horn fly control on dairy cattle, but the flies have recently shown resistance to some of these compounds. Insect growth regulators are also used to control horn flies on dairy cattle. Several exotic species of competitors (dung beetles) and predators have been released to aid in controlling horn flies in several states. Fly traps are effective under certain conditions in reducing horn fly populations. |
