Ixodes lividus Koch, 1844 (Ixodida: Ixodidae) ticks are parasites specific to the sand martin (Riparia riparia). The distribution range of I. lividus covers Europe and Asia and they are found wherever sand martins nest. Borrelia burgdorferi sensu stricto, Borrelia garinii and Rickettsia vini have recently been detected in I. lividus ticks in Central Europe. The aim of this study was to investigate the presence of Rickettsia spp. (Rickettsiales: Rickettsiaceae) and Borrelia spp. (Spirochaetales: Spirochaetaceae) in I. lividus ticks in Lithuania. A total of 2622 non-engorged I. lividus from two different colonies comprising 40 sand martin nests were collected in Lithuania in 2013 and 2015. Rickettsial DNA was detected in 106 of the 117 pooled larvae samples, in all examined seven nymphs, four females and one male specimen. Sequence analysis of partial gltA, ompA and htrA genes showed 99–100 % identity with the corresponding R. vini sequences deposited in GenBank. None of I. lividus tested was infected with Borrelia burgdorferi sensu lato. This is the first time that the presence of R. vini has been reported in Lithuania.

x虫科克斯（Ixodes lividus Koch），1844年（Ixodida：Ixodidae）的s是特定于沙丁鱼（Riparia riparia）的寄生虫。lividus的分布范围覆盖欧洲和亚洲，可以在沙丁鱼筑巢的任何地方找到它们。最近在中欧的li.usvidus壁虱中发现了疏螺旋体疏螺旋体，疏螺旋体疏螺旋体和立克次体。这项研究的目的是调查立克次体的存在。（立克次体：立克次体）和疏螺旋体属。（I. lividus）（Spirochaetales：Spirochaetaceae）在立陶宛。在2013年和2015年，在立陶宛共收集了来自22个不同殖民地的2622个未充血的I. lividus，包括40个沙丁鱼巢。在117份合并的幼虫样本中的106份中检出了立克次体DNA，所有样本中检出了7只若虫，其中4只为雌性。一个雄性标本。部分gltA，ompA和htrA基因的序列分析表明，其与GenBank中存放的相应R. vini序列具有99-100％的同一性。被测试的I. lividus均未感染伯氏疏螺旋体。这是首次在立陶宛报道维尼罗非鱼的存在。