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ARS Home » Plains Area » Kerrville, Texas » Knipling-Bushland U.S. Livestock Insects Research Laboratory » LAPRU » Research » Publications at this Location » Publication #333705
Title: Horn fly population dynamics as prediction tool for the fixation of pesticide resistance

Author
item GATTO BRITO, LUCIANA - Embrapa
item DA SILVA BARBIERI, FABIO - Embrapa
item BARROS ROCHA, RODRIGO - Embrapa
item DE SENA OLIVEIRA, MARCIA - Embrapa
item Guerrero, Felicito
item FOIL, LANE - Louisiana State University

Submitted to: Technical Report
Publication Type: Research Technical Update
Publication Acceptance Date: 9/1/2015
Publication Date: 9/1/2015
Citation: Gatto Brito, L., Da Silva Barbieri, F., Barros Rocha, R., De Sena Oliveira, M.C., Guerrero, F., Foil, L.D. 2015. Horn fly population dynamics as prediction tool for the fixation of pesticide resistance. Technical Report. 75:1677-8618.

Interpretive Summary: This research project sought to establish the population dynamics of the horn fly in Brazil. Two cattle herds were monitored to determine if the number of rainy days influenced horn fly infestation levels. It was determined that under the climatic conditions of the humid tropics, the horn fly can produce up to 15 generations annually. This information was combined with results from diagnostic tests for pesticide resistance. Such knowledge is valuable to improve strategies to control horn fly populations.

Technical Abstract: This research project was conducted to establish the population dynamics of the horn fly. Two cattle herds were monitored to establish if contrasting climatic regional conditions, in addition to temperature and precipitation, related to the number of rainy days as a factor influencing horn fly infestation levels. Under humid tropic climatic conditions, the horn fly can produce up to 15 generations annually. Such information combined with results from diagnostic tests for pesticide resistance will help improve strategies to control horn fly populations.