Entomopathogenic fungi of the genus Beauveria and Metarhizium play an important role in controlling the population of arthropods. However, the data on their effectiveness against ticks focus mainly on species that do not occur in Europe. The aim of the study was to assess the effectiveness of entomopathogenic fungi against two of the most important tick species in Europe: Ixodes ricinus and Dermacentor reticulatus. In our study, the majority of tested entomopathogenic fungi strains showed potential efficacy against both tick species; however, D. reticulatus was less susceptible in comparison to I. ricinus. The observed mortality of ticks was up to 100% by using all commercial strains as well as three out of nine of the environmental strains. Among all tested fungi, the most effective against both tick species was environmental strain Metarhizium anisopliae LO4(1) with LC₅₀ values: 2.6 × 10³ cfu/ml–5.7 × 10⁵ cfu/ml. Botanigard proved to be more effective than MET52 with LC₅₀ values: 6.8 × 10³ cfu/ml–3.3 × 10⁶ cfu/ml. The conducted bioassays indicate the potential possibility of using the environmental isolates of entomopathogenic fungi, as well as commercial strains in control of local populations of I. ricinus and D. reticulatus; however, the possibility of using them in vivo requires more research.

属的昆虫病原真菌白僵菌和绿僵在控制节肢动物的种群中发挥重要作用。但是，有关其抗tick虫功效的数据主要集中在欧洲不存在的物种上。这项研究的目的是评估昆虫病原真菌对欧洲最重要的两个壁虱物种：蓖麻（Ixodes ricinus）和网纹真皮（Dermacentor reticulatus）的有效性。在我们的研究中，大多数测试的昆虫病原真菌菌株对两种against均显示出潜在的功效。然而，与蓖麻毒杆菌相比，网状D. reticulatus的敏感性较低。通过使用所有市售菌株以及九种环境菌株中的三株，观察到的s虫死亡率高达100％。在所有测试的真菌中，对两种壁虱物种最有效的是环境菌株Metanhizium anisopliae LO4（1），LC ₅₀值为：2.6×10 ³  cfu / ml–5.7×10 ⁵  cfu / ml。Botanigard的LC ₅₀值为6.8×10 ³  cfu / ml–3.3×10 ⁶  cfu / ml，比MET52更有效。进行的生物测定表明，使用病原性真菌的环境分离株以及商业菌株来控制蓖麻和黑麦草的本地种群具有潜在的可能性。D.网纹; 然而，在体内使用它们的可能性需要更多的研究。