Seasonal fluctuations of Babesia bigemina and Rhipicephalus microplus in Brangus and Nellore cattle reared in the Cerrado biome, Brazil

Autor: Kauê Rodriguez Martins, Marcos Valério Garcia, Paulino Bonatte-Junior, Pâmella Oliveira Duarte, Barbara Guimarães Csordas, Leandro de Oliveira Souza Higa, Namor Pinheiro Zimmermann, Jacqueline Cavalcante Barros, Renato Andreotti
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Parasites & Vectors, Vol 15, Iss 1, Pp 1-9 (2022)
Druh dokumentu: article
ISSN: 1756-3305
DOI: 10.1186/s13071-022-05513-2
Popis: Abstract Background The tick Rhipicephalus microplus (Ixodida: Ixodidae, Canestrini, 1888) causes substantial economic and health losses in cattle production and is the main vector of Babesia bigemina (Piroplasmidae: Babesidae, Smith & Kilborne, 1893). Babesia bigemina is responsible for a tick-borne disease known as babesiosis that can cause hemolytic anemia, fever and death. In the study reported here, we investigated the relationship between the number of ticks per animal and the number of B. bigemina cytochrome b gene (cbisg) copies in the blood of Brangus and Nellore cattle reared without acaricidal treatment in the Brazilian Cerrado biome over a 1-year period. Methods Ticks on 19 animals (9 Brangus and 10 Nellore cattle) were counted every 18 days, and blood was collected every 36 days for 12 months. Serological samples were analyzed with an indirect enzyme-linked immunosorbent assay, and genomic DNA was analyzed by conventional PCR and quantitative PCR. The PCR products were sequenced by the Sanger method. Results The Brangus and Nellore breeds showed similar weight development and no clinical signs of babesiosis. Statistically significant differences (P
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