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巴西一个环境保护区与家养犬有关的蜱(蜱螨目:硬蜱科)和蜱传病原体,具有林氏硬蜱(Audouin, 1826)的分子证据。

Ticks (Acari: Ixodidae) and tick-borne agents associated with domestic dogs in an environmental protection area in Brazil, with molecular evidence of Rhipicephalus linnaei (Audouin, 1826).

机构信息

Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Seropérica, RJ, Brasil.

Departamento de Medicina Veterinária Preventina e Saúde Animal, Faculdade de Medicina Veterinária e Ciência Animal, Universidade de São Paulo - USP, São Paulo, SP, Brasil.

出版信息

Rev Bras Parasitol Vet. 2024 Oct 7;33(3):e008224. doi: 10.1590/S1984-29612024045. eCollection 2024.

Abstract

Wild animals and domestic dogs living in human dwellings near forested areas can share ectoparasites, including ticks. In this study, we surveyed ticks associated with dogs which tutors living in the Palmares Environmental Protection Area (EPA Palmares). Dogs were classified into three categories, domiciled, semi-domiciled and wandering dogs according to dog care/ type of dwelling. Ticks were collected monthly from January to December, 2020. Overall, 60 (33.9%) out of 177 examined dogs were infested by ticks. Six species of ticks were identified: Rhipicephalus linnaei, Amblyomma aureolatum, Amblyomma sculptum, Amblyomma ovale, Amblyomma dubitatum and Rhipicephalus microplus. The overall prevalence and presence in semi-domicilied+wandering dogs was higher for A. aureolatum than for R. linnaei by the Chi-square statistic tests. A random sample of 50 ticks, collected from 22 different dogs, were processed through molecular analyses. Ticks were submitted to DNA extraction and also by PCR, using specific primers in order to pathogens monitoring. Four males of A. aureolatum yielded DNA sequences (350 bp) that were 100% identical to the type strain of Rickettsia bellii in GenBank (CP000087).

摘要

生活在森林地区附近有人居住的野生动物和家养犬可能会共享包括蜱虫在内的外寄生虫。在这项研究中,我们调查了与居住在帕拉梅拉斯环境保护区(EPA Palmares)的导师一起生活的犬有关的蜱虫。根据犬类护理/居住类型,将犬类分为 domiciled、semi-domiciled 和 wandering 三类。从 2020 年 1 月到 12 月,每月从狗身上收集一次蜱虫。总的来说,在检查的 177 只狗中,有 60 只(33.9%)被蜱虫寄生。共鉴定出 6 种蜱虫:Rhipicephalus linnaei、Amblyomma aureolatum、Amblyomma sculptum、Amblyomma ovale、Amblyomma dubitatum 和 Rhipicephalus microplus。通过卡方检验,半居家+流浪犬中 A. aureolatum 的总体流行率和存在率高于 R. linnaei。从 22 只不同的狗身上采集了 50 只蜱虫的随机样本,通过分子分析进行处理。蜱虫被提交进行 DNA 提取,并通过 PCR 使用特定引物进行病原体监测。从 4 只雄性 A. aureolatum 中获得的 DNA 序列(350bp)与 GenBank 中 Rickettsia bellii 的模式株(CP000087)完全相同。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9472/11486457/6c933b840ebe/rbpv-33-3-e008224-g01.jpg

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