Greenhouse and Processing Crops Research Centre, Harrow, Ontario N0R 1G0, Canada.
J Econ Entomol. 2010 Jun;103(3):563-9. doi: 10.1603/ec09161.
Predation, development, and oviposition experiments were conducted to evaluate Amblyseius swirskii (Athias-Henriot) (Acari: Phytoseiidae) as a potential biological control agent for tomato russet mite, Aculops lycopersici (Massee) (Acari: Eriophyidae), which can be a serious pest of greenhouse tomatoes. Results showed that A. swirskii attacked all developmental stages of A. lycopersici and had a type II functional response at the prey densities tested. The attack rate and handling time estimates from the random predator equation were 0.1289/h and 0.2320 h, respectively, indicating that A. swirskii can consume 103.4 individuals per day. Predation rates of A. swirskii on A. lycopersici in the presence of alternative food sources such as pollen, first-instar thrips, or whitefly eggs were 74, 56, and 76%, respectively, compared with the predation rate on A. lycopersici alone. A. swirskii successfully completed their life cycle on either A. lycopersici or cattail (Typha latifolia L.) pollen. At 25 degrees C and 70% RH, developmental time of female A. swirskii fed on A. lycopersici or on cattail pollen was 4.97 and 6.16 d, respectively. For the first 10 d after molting to the adult stage, A. swirskii fed on A. lycopersici had higher daily oviposition rate (2.0 eggs per day) than on pollen (1.5 eggs per day). From this laboratory study, it can be concluded that A. swirskii has promising traits as a predator against A. lycopersici and that their populations can be maintained using alternative food sources such as cattail pollen. We suggest that the effectiveness of A. swirskii against A. lycopersici under field conditions needs next to be investigated.
捕食、发育和产卵实验评估了斯氏钝绥螨（Athias-Henriot）（蜱螨目：植绥螨科）作为番茄锈螨（Aculops lycopersici）（蜱螨目：瘿螨科）的潜在生物防治剂的潜力，番茄锈螨可能是温室番茄的严重害虫。结果表明，A. swirskii 攻击了 A. lycopersici 的所有发育阶段，并且在测试的猎物密度下具有 II 型功能反应。随机捕食者方程中的攻击率和处理时间估计分别为 0.1289/h 和 0.2320 h，表明 A. swirskii 每天可以消耗 103.4 个个体。与单独捕食 A. lycopersici 相比，当存在替代食物来源（如花粉、第一龄蓟马或粉虱卵）时，A. swirskii 对 A. lycopersici 的捕食率分别为 74%、56%和 76%。A. swirskii 在 A. lycopersici 或香蒲（Typha latifolia L.）花粉上成功完成了它们的生命周期。在 25°C 和 70%RH 下，雌性 A. swirskii 以 A. lycopersici 或香蒲花粉为食的发育时间分别为 4.97 和 6.16 d。蜕皮到成虫阶段后的前 10 天，以 A. lycopersici 为食的 A. swirskii 的日产卵率（每天 2.0 个卵）高于以花粉为食的（每天 1.5 个卵）。从这项实验室研究可以得出结论，A. swirskii 作为捕食者防治 A. lycopersici 具有良好的特性，并且可以使用替代食物来源（如香蒲花粉）来维持其种群。我们建议，下一步需要调查 A. swirskii 在田间条件下对 A. lycopersici 的有效性。
