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      Borrelia theileri: observação em carrapatos do gênero Boophilus microplus no município de Guaíba, RS, Brasil Translated title: Borrelia theileri: observation on Boophilus microplus ticks in Guaiba, RS, Brazil

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          Abstract

          Espiroquetas da espécie Borrelia theileri identificadas em uma estirpe de carrapatos Boophilus microplus provenientes do município de Guaíba, RS. A observação ocorreu no exame de hemolinfa de fêmeas adultas com 10 dias pós-repleçâo, corada por Giemsa. Não foram observadas espiroquetas em ovos provenientes de teleóginas infectadas. A detecção da estirpe infectada sugere a presença de borreliose em rebanhos bovinos, fato que eventualmente pode interferir em resultados de diagnóstico ou tornar-se motivo de preocupação em produtos derivados de sangue bovino tais como vacinas vivas contra anaplasmose e babesiose bovina.

          Translated abstract

          Spirochetes of species Borrelia theileri were identifica in afield-strain of the caule tick Boophilus microplus, in Guaíba, RS, Brazil. Hemolymph smears from females 10 days post-repletion were collected by gentty section of the tarsal-metatarsaijoint, and dropped onto a microscope slide, and stained by Giemsa. No spirochetes were observed in eggs squashed and stained by Giemsa from the same infected strain. The detection of B. microplus adult females infected with Borrelia theileri suggesfs the likely presence of borreliosis in bovine heras what might eventually interfere with the interpretation of diagnosis results or become cause for concern in blood products such as anaplasmosis and babesiosis live vaccines.

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          Most cited references15

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          Pathobiology of Borrelia theileri in the tropical cattle tick, Boophilus microplus.

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            Borrelia theileri: isolation from ticks (Boophilus microplus) and tick-borne transmission between splenectomized calves.

            The bovine spirochete, Borrelia theileri, was detected in Giemsastained blood smears from a splenectomized calf 17 days after exposure to a laboratory colony of the tropical cattle tick, Boophilus microplus. Spirochetes were detected in the hemolymph and ovary of all engorged female ticks examined, indicating a high infection rate in this tick colony. Spirochetes were detected in a 2nd splenectomized calf 15 days after exposure to the larval offspring of ticks from the 1st calf. The only observable effect of infection in the 2 calves was a maximum rectal temperature increase to 40.2 C, which coincided with the first detectable parasitemia. The tick colony did not have any adverse effects, despite extensive multiplication of spirochetes in their tissues.
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              The transmission of Borrelia theileri by Boophilus annulatus (Say, 1821).

              A Trees (1978)
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                Author and article information

                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria, RS, Brazil )
                0103-8478
                1678-4596
                December 1996
                : 26
                : 3
                : 447-450
                Affiliations
                [01] Eldorado do Sul RS orgnameFundação Estadual de Pesquisa Agropecuária (FEPAGRO) orgdiv1Centro de Pesquisas Veterinárias Desidério Finamor (CPVDF)
                [02] Urbana IL orgnameUniversity of Illinois orgdiv1College of Veterinary Medicine USA
                Article
                S0103-84781996000300018 S0103-8478(96)02600318
                b86004b4-41ef-488e-a143-841a041e9693

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 29 May 1996
                : 10 July 1996
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 15, Pages: 4
                Product

                SciELO Brazil

                Categories
                Parasitologia

                borreliose,bovinos,spirochetes,borreliosis,bovine,espiroquetas
                borreliose, bovinos, spirochetes, borreliosis, bovine, espiroquetas

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