The generalist predatory mite, Neoseiulus cucumeris (Oudemans) is known as one of the most effective natural enemies on many pests. This economically important biocontrol agent was reared for 20 generations on date palm and castor bean pollen as well as a mixture of pollen types, including date palm, castor bean, and almond. The performance of this predator was evaluated by comparing its life table parameters after different generations (G1–G20) fed on each diet in a laboratory at 25 ± 1°C, 60 ± 5% RH, and a photoperiod of 16:8 (L: D) h. The development time of the predator reared on all tested diets had no significant difference in G20. The intrinsic rate of increase (r) of N. cucumeris by feeding on the mixed pollen (0.197 day−1) was significantly higher than that on castor bean, or date palm pollen (0.146 or 0.152 day−1 in G1, respectively). Our results indicated that the predator’s performance was not affected by long-term feeding on the pollen diets, as well as there was no considerable difference between pollen alone and pollen mixture diets. Furthermore, mites reared on pollen diets had higher quality than those reared on natural prey, Tetranychus urticae Koch.

中文翻译：

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单独花粉还是花粉类型的混合物？评估它们是否适合大规模饲养 20 代以上的 Neoseiulus cucumeris (Acari: Phytoseiidae)

多面手掠食性螨虫 Neoseiulus cucumeris (Oudemans) 被认为是许多害虫最有效的天敌之一。这种经济上重要的生物防治剂在枣椰树和蓖麻花粉以及多种花粉类型（包括枣椰树、蓖麻和杏仁）上饲养了 20 代。通过比较不同世代 (G1-G20) 在实验室中以 25 ± 1°C、60 ± 5% RH 和 16:8 (L : D) 小时。在所有测试的饮食中饲养的捕食者的发育时间在 G20 中没有显着差异。以混合花粉（0.197 天-1）为食的黄瓜的内在增加率（r）显着高于蓖麻或枣椰花粉（G1 期分别为0.146 或0.152 天-1）。我们的研究结果表明，捕食者的表现不受长期喂食花粉日粮的影响，单独的花粉日粮和花粉混合日粮之间没有显着差异。此外，以花粉为食的螨虫比以天然猎物 Tetranychus urticae Koch 饲养的螨虫质量更高。