Khanamani Mostafa, Fathipour Yaghoub, Talebi Ali Asghar, Mehrabadi Mohammad
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P.O. Box 14115-336, Tehran, Iran.
J Econ Entomol. 2017 Aug 1;110(4):1442-1450. doi: 10.1093/jee/tox116.
Long-term feeding effects of the almond pollen on the life table parameters of Neoseiulus californicus McGregor were assessed after 5, 10, and 20 generations after introduction in the rearing arena. Furthermore, to evaluate behavioral characteristics of the mass-reared predator (strain A) in face with the real prey, functional and numerical responses of the predator to different densities of the twospotted spider mite nymphs were determined, and the obtained data were compared with those reared on twospotted spider mite (strain T). Long-term rearing did not significantly affect total fecundity of N. californicus (ranged from 37.79 to 41.91 eggs). Nevertheless, preadult duration in the 5th generation was significantly longer than the 10th and 20th generations. The intrinsic rate of increase (r) in the 10th (0.2056 d-1) and 20th (0.2201 d-1) generations had not significant difference together. However, the r value slightly dropped in the 5th generation (0.1706 d-1) because of the irregular offering of fresh pollen to the rearing colonies before that. Both strains of N. californicus exhibited a type II functional response; however, the N. californicus reared on the almond pollen (strain A) had a higher attack rate (a) and shorter handling time (Th). The individuals reared on the almond pollen had a greater size than those reared on twospotted spider mite; its higher predation potential is probably due to this characteristic. Consequently, the rearing of N. californicus on the almond pollen positively affected its attributes including high survivorship, body size, and fecundity, and subsequently higher potential to control twospotted spider mite.
在引入饲养环境5代、10代和20代后，评估了杏仁花粉的长期喂食对加州新小绥螨（Neoseiulus californicus McGregor）生命表参数的影响。此外，为了评估大规模饲养的捕食者（A品系）面对真实猎物时的行为特征，测定了该捕食者对不同密度的二斑叶螨若虫的功能反应和数值反应，并将所得数据与以二斑叶螨饲养的捕食者（T品系）的数据进行比较。长期饲养对加州新小绥螨的总繁殖力没有显著影响（范围为37.79至41.91粒卵）。然而，第5代的未成熟期明显长于第10代和第20代。第10代（0.2056 d-1）和第20代（0.2201 d-1）的内禀增长率（r）没有显著差异。然而，由于在此之前饲养群体新鲜花粉供应不规律，第5代的r值略有下降（0.1706 d-1）。两个加州新小绥螨品系均表现出II型功能反应；然而，以杏仁花粉饲养的加州新小绥螨（A品系）具有更高的攻击率（a）和更短的处理时间（Th）。以杏仁花粉饲养的个体比以二斑叶螨饲养的个体体型更大；其更高的捕食潜力可能归因于此特征。因此，用杏仁花粉饲养加州新小绥螨对其属性产生了积极影响，包括高存活率、体型和繁殖力，进而具有更高的控制二斑叶螨的潜力。
