Abstract
Rhipicephalus microplus causes high economic losses for Uruguay; the country is divided into a R. microplus-free area and an endemic area. The aim of this research was to evaluate the R. microplus and tick fever situation in Uruguay and the feasibility of implementing R. microplus control or elimination programs to reduce the number of infested farms. A representative survey was performed to determine the number of infested farms, the number of farms with outbreaks of tick fever and the control and preventive measures being used. Control or elimination programs using generational treatment were implemented on 30 farms. Previously, a situation diagnosis was performed by evaluating the background of each farm, identifying acaricide resistance, serologically evaluating the enzootic stability of tick fever, and analyzing the risk of R. microplus introduction to farms. According to the survey, R. microplus was present on 9544 (36%) farms, and 3436 (36%) of these farms experienced outbreaks of tick fever. Only 323 (9.4%) farmers used the tick fever vaccine. Of the 30 farms for which control or elimination programs were carried out, 18 reduced the number of treatments applied per year and six achieved the elimination of the cattle tick. It is concluded that by administering elimination or control programs, it is possible to reduce the number of infested farms and the number of treatments to maintain control. New surveys should be performed to measure the degree of technology adoption by farmers and to analyze the advances in tick control or elimination programs on farms.
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Acknowledgements
We would like to acknowledge Tatiana Saporiti for performing the acaricide resistance tests, Gonzalo Escayola and Stephanie Lara for collaborating with the sampling, the official veterinary staff of the Ministry of Livestock Agricultural and Fishery (MGAP) for carrying out the 2017 survey, Maria Angelica Solari for collaborating on the evaluation of the enzootic stability and Marcelo Alfonso and Ana Marques for helping with the art work preparation.
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Miraballes, C., Aráoz, V. & Riet-Correa, F. Rhipicephalus microplus, babesiosis and anaplasmosis in Uruguay: current situation and control or elimination programs on farms. Exp Appl Acarol 78, 579–593 (2019). https://doi.org/10.1007/s10493-019-00405-0
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DOI: https://doi.org/10.1007/s10493-019-00405-0