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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/21448

Title: Dynamics of Haematobia irritans irritans (Diptera: Muscidae) Infestation on Nelore Cattle in the Pantanal, Brazil
Issue Date: 31-Dec-2001
Publisher: Fundação Oswaldo Cruz, Fiocruz
Citation: Memórias do Instituto Oswaldo Cruz (ISSN: 1678-8060) Vol 96 Num 4
Abstract: Mem Inst Oswaldo Cruz 2001, Volume 96, Number 4, pp. 445-450 Dynamics of Haematobia irritans irritans (Diptera: Muscidae) Infestation on Nelore Cattle in the Pantanal, Brazil Antonio Thadeu M Barros Code Number: oc01068 ABSTRACT: From June 1993 to May 1995, horn fly counts were conducted twice a month on untreated Nelore cattle raised extensively in the Pantanal. Horn fly population showed a bimodal fluctuation and peaks were observed every year after the beginning (November/December) and at the end (May/June) of the rainy season, which coincided with mid-late spring and mid-late fall, respectively. Horn flies were present on cattle throughout the year in at least 64% of the animals. Mean horn fly numbers on animals did not exceed 85 flies/cow during peaks and were under 35 flies/cow in most of the remaining periods. The highest infestations (population peaks) were short and dropped suddenly within two weeks. Less than 15% of the animals in both herds could be considered as "fly-susceptible" _ showing consistently higher infestations, or "fly-resistant" _ showing consistently lower infestations. KEYWORDS: horn fly, seasonality, ecology, Pantanal, Brazil Copyright 2001 Mem Inst Oswaldo Cruz
URI: http://hdl.handle.net/1807/21448
Other Identifiers: http://www.bioline.org.br/abstract?id=oc01068
Rights: Copyright 2001 Fundação Oswaldo Cruz, Fiocruz
Appears in Collections:Bioline International Legacy Collection

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