Tetranychus urticae (Acari: Tetranychidae) is one of the most important pests of agricultural crops with worldwide distribution causing considerable damage to different products. Application of chemical acaricides is one of the most important strategies used for the control of this pest. Entomopathogenic fungi, however, have been proposed as alternative control agents. In this study, sub-lethal effects (LC10 = 6.76 × 102, LC20 = 8.74 × 103, and LC30 = 55.38 × 103 conidia ml−1) of Beauveria bassiana strain TV on the life table parameters of T. urticae were evaluated under laboratory conditions. The results demonstrated that by increasing the concentration, a significant decline was observed in adult longevity of both male and female individuals. Total fecundity of T. urticae was calculated as 45.16, 36.28, 23.98, and 18.21 eggs in control, LC10, LC20, and LC30 treatments, respectively. Sub-lethal concentrations drastically affected the population parameters of this mite pest. The intrinsic rate of increase (r) ranged from 0.1983 to 0.1688 day−1 for the mites treated with distilled water and LC20 treatments, respectively. The net reproductive rate (R0) was affected by the sub-lethal concentrations (lower value at LC30 concentration: 11.19 offspring/individual). Considering the detrimental effects of B. bassiana on some biological parameters of T. urticae, it can be concluded that this product can be used to develop targeted interventions aimed at integrated pest management of this pest.

Tetranychus urticae (Acari: Tetranychidae) 是最重要的农作物害虫之一，分布于世界各地，对不同的产品造成相当大的损害。化学杀螨剂的应用是用于控制这种害虫的最重要的策略之一。然而，昆虫病原真菌已被提议作为替代控制剂。在这项研究中，白僵菌TV对T的寿命表参数的亚致死效应（LC 10 = 6.76 × 10 2，LC 20 = 8.74 × 10 3和LC 30 = 55.38 × 10 3分生孢子ml -1）. 荨麻疹在实验室条件下进行了评估。结果表明，通过增加浓度，观察到男性和女性个体的成年寿命显着下降。在对照、LC 10、LC 20和LC 30处理中，T. urticae的总繁殖力分别计算为45.16、36.28、23.98 和18.21 个卵。亚致死浓度极大地影响了这种螨虫害虫的种群参数。对于用蒸馏水处理和 LC 20处理的螨虫，内在增加率 ( r ) 分别为 0.1983 到 0.1688 天-1。净繁殖率 ( R 0) 受到亚致死浓度的影响（LC 30浓度下的较低值：11.19 后代/个体）。考虑到B. bassiana对T. urticae一些生物学参数的不利影响，可以得出结论，该产品可用于开发针对该害虫的害虫综合治理的有针对性的干预措施。