Soltaniyan Afsaneh, Kheradmand Katayoon, Fathipour Yaghoub, Shirdel Davoud
Department of Entomology and Plant Pathology, College of Aburaihan, University of Tehran, Pakdasht, Iran.
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P.O. Box 14115-336, Tehran, Iran.
Bull Entomol Res. 2020 Aug;110(4):535-541. doi: 10.1017/S000748532000005X. Epub 2020 Mar 9.
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.
多食性捕食者更好的表现及其密度的增加，可能是捕食者能够利用多种食物或混合食物的一个激励因素。在本研究中，评估了将四种花粉粒（雪松、梨、杏和阿月浑子）与猎物二斑叶螨混合投喂给加州新小绥螨时的效果。结果表明，在阿月浑子花粉 + 二斑叶螨以及杏花粉 + 二斑叶螨的组合上观察到雌螨发育时间最短。以包含阿月浑子花粉的混合食物饲养的雌螨总寿命最长，而以包含梨花粉的食物饲养的雌螨总寿命最短。此外，包含梨花粉的食物上雌螨的繁殖力最低，繁殖期最短，而在阿月浑子花粉 + 二斑叶螨的食物上观察到最高的繁殖力和最长的繁殖期。此外，阿月浑子花粉 + 二斑叶螨的内禀增长率（r）和有限增长率（λ）、净繁殖率（R0）和总繁殖率（GRR）最高。这些发现对制定二斑叶螨的综合生物防治计划具有重要意义，将对此进行讨论。
