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<p>The hard tick <i>Hyalomma aegyptium</i> is the vector for transmitting the reptile-associated <i>Borrelia turcica</i>. Adult <i>H. aegyptium</i> predominantly parasitizes tortoises belonging to the <i>Testudo</i> genus. However, the Immature tick stages exhibit lower host specificity and can be discovered in various vertebrates, including humans. Notably, <i>B. turcica</i> isolates have been effectively extracted from non-indigenous tortoises, indicating their potential role as hosts. Many <i>Hyalomma</i> ticks collected from tortoises are infected as adults, leading to questions about how this <i>Borrelia</i> species is transmitted between ticks and tortoises. In this area, our study focused on <i>Hyalomma</i> ticks that commonly carry infections of both <i>Borreliae</i> causing Lyme disease (LB) and relapsing fever (RF). These ticks were obtained from <i>Testudo graeca</i> turtles living in different habitats and used conventional PCR to analyze the sequences of 16&#xa0;S rRNA and 5–23&#xa0;S rRNA. We successfully identified <i>Borrelial</i> DNA in 31 out of 234 tick samples (13.2%) for the <i>16&#xa0;S rRNA</i> sequence and in 18 out of 234 tick samples (7.6%) for the <i>5–23&#xa0;S rRNA</i> sequence. These ticks were isolated from land turtles. However, examining the turtles’ blood revealed no signs of <i>Borrelial</i> infection. This study explores the occurrence of <i>B. turcica</i> within <i>T. graeca</i> tortoises. The research focuses on spirochetes within hard ticks that were obtained from tortoises located in West Azerbaijan.&#xa0;</p>

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Detection of Borrelia turcica from Hyalomma aegyptium ticks and blood of turtles (Testudo graeca) in northern west of Iran

  • 期刊论文

  • 发表日期：

    2025年2月15日

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  • Ahmad Enferadi,
  • Abdolghaffar Ownagh,
  • Mousa Tavassoli

摘要

The hard tick Hyalomma aegyptium is the vector for transmitting the reptile-associated Borrelia turcica. Adult H. aegyptium predominantly parasitizes tortoises belonging to the Testudo genus. However, the Immature tick stages exhibit lower host specificity and can be discovered in various vertebrates, including humans. Notably, B. turcica isolates have been effectively extracted from non-indigenous tortoises, indicating their potential role as hosts. Many Hyalomma ticks collected from tortoises are infected as adults, leading to questions about how this Borrelia species is transmitted between ticks and tortoises. In this area, our study focused on Hyalomma ticks that commonly carry infections of both Borreliae causing Lyme disease (LB) and relapsing fever (RF). These ticks were obtained from Testudo graeca turtles living in different habitats and used conventional PCR to analyze the sequences of 16 S rRNA and 5–23 S rRNA. We successfully identified Borrelial DNA in 31 out of 234 tick samples (13.2%) for the 16 S rRNA sequence and in 18 out of 234 tick samples (7.6%) for the 5–23 S rRNA sequence. These ticks were isolated from land turtles. However, examining the turtles’ blood revealed no signs of Borrelial infection. This study explores the occurrence of B. turcica within T. graeca tortoises. The research focuses on spirochetes within hard ticks that were obtained from tortoises located in West Azerbaijan.