ABSTRACT Prey-stage preference, functional response, numerical response, and mutual interference of Typhlodromus bagdasarjani Wainstein & Arutunjan feeding on Eotetranychus frosti (McGregor) (Tetranychidae) were determined at 25 ± 1ºC, with 16:8 h L: D, at an average daily relative air humidity of 60 ± 10% on apple leaves. The results of the no-choice experiment on E. frosti revealed that the predator T. bagdasarjani consumed significantly more eggs than other prey stages. In the choice experiment, the predator showed a significant preference for E. frosti protonymphs, followed by larvae, whereas preference for consumption of eggs or deutonymphs was less. Likewise, T. bagdasarjani demonstrated a type II functional response on protonymphs of E. frosti. The attack rate (a) and handling time (Th) coefficients of a Type II response were estimated by fitting Rogers model to the data. The oviposition rate increased at the highest prey density and tended to stabilize when prey density was greater than 32 prey/day. The negative value of the interference coefficient (−0.159) in the mutual interference analysis showed an inverse relationship between the predator density and per capita searching efficiency. The results of this study revealed that T. bagdasarjani can play a role in controlling E. frosti populations, particularly when prey densities are low.

中文翻译：

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Typhlodromus bagdasarjani (Acari: Phytoseiidae) 对霜螨 (Tetranychidae) 的捕食阶段偏好、功能和数值响应以及相互干扰

摘要 在 25 ± 1ºC、16:8 h L: D 下，确定了以霜螨 (McGregor) (Tetranychidae) 为食的 Typhlodromus bagdasarjani Wainstein 和 Arutunjan 的猎物阶段偏好、功能响应、数值响应和相互干扰苹果叶上的每日相对空气湿度为 60 ± 10%。E.frosti 无选择实验的结果表明，捕食者 T. bagdasarjani 消耗的卵明显多于其他猎物阶段。在选择实验中，捕食者对 E.frosti 原若虫表现出显着的偏好，其次是幼虫，而对食用蛋或拟若虫的偏好较低。同样，T. bagdasarjani 对 E.frosti 的原若虫表现出 II 型功能反应。通过将 Rogers 模型拟合到数据来估计类型 II 响应的攻击率 (a) 和处理时间 (Th) 系数。产卵率在最高猎物密度时增加，当猎物密度大于 32 个猎物/天时趋于稳定。相互干扰分析中干扰系数的负值（-0.159）表明捕食者密度与人均搜索效率呈反比关系。这项研究的结果表明，T. bagdasarjani 可以在控制 E.frosti 种群方面发挥作用，尤其是当猎物密度较低时。159）在相互干扰分析中表明捕食者密度与人均搜索效率之间存在反比关系。这项研究的结果表明，T. bagdasarjani 可以在控制 E.frosti 种群方面发挥作用，尤其是当猎物密度较低时。159）在相互干扰分析中表明捕食者密度与人均搜索效率之间存在反比关系。这项研究的结果表明，T. bagdasarjani 可以在控制 E.frosti 种群方面发挥作用，尤其是当猎物密度较低时。