Better performance of generalist predators, as well as an increase in their density, may be an incentive factor in the ability of the predators to exploit more than one food item or mixed diets. In this study, the effects of four pollen grains (cedar, pear, apricot, and pistachio) when provided to Neoseiulus californicus in mixed diets with prey, Tetranychus urticae, were evaluated. The result indicated that the fastest female developmental time was observed on pistachio pollen + T. urticae, together with apricot pollen + T. urticae. Females reared on the mixed diet comprising pistachio pollen reflected the longest total life span duration, while the shortest total life span was observed in those on the diet that included pear pollen. Furthermore, the lowest fecundity, as well as the shortest reproduction period, was determined on the diets that included pear pollen, while the highest fecundity and the longest reproduction period were observed in pistachio pollen + T. urticae. In addition, the intrinsic (r) and finite rate of increase (λ), net (R0) and gross (GRR) reproductive rates were highest in pistachio pollen + T. urticae. These findings have important implications for developing a comprehensive biological control program of T. urticae, which will be discussed.

中文翻译：

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花粉粒对天然猎物的补充对加利福尼亚新鳖的生命表参数产生影响

通才捕食者的更好表现，以及它们密度的增加，可能是捕食者利用不止一种食物或混合饮食的能力的激励因素。在这项研究中，四种花粉粒（雪松、梨、杏和开心果）提供给加州新鼹鼠与猎物混合饮食，荨麻疹, 进行了评价。结果表明，在开心果花粉上观察到雌性发育最快的时间 +T。荨麻疹，连同杏花粉 +荨麻疹. 在含有开心果花粉的混合饮食中饲养的雌性反映了最长的总寿命，而在含有梨花粉的饮食中观察到最短的总寿命。此外，在包含梨花粉的​​饮食中确定了最低的繁殖力和最短的繁殖期，而在开心果花粉中观察到最高的繁殖力和最长的繁殖期 +荨麻疹. 此外，内在的（r) 和有限增长率 (λ), net (R0) 和总 (GRR) 开心果花粉的繁殖率最高 +荨麻疹. 这些发现对于制定全面的生物控制计划具有重要意义荨麻疹, 这将被讨论。