Group-rearing did not affect the life table and predation rate of Phytoseiulus persimilis (Acari: Phytoseiidae) fed on Tetranychus urticae
Group-rearing did not affect the life table and predation rate of Phytoseiulus persimilis (Acari: Phytoseiidae) fed on Tetranychus urticae
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DOI：
10.11158/saa.22.10.11
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发表时间：
2017-09
影响因子：
1.2
通讯作者：
Sahar Saemi;Hasan Rahmani;A. Kavousi;H. Chi
中科院分区：
文献类型：
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作者：
Sahar Saemi;Hasan Rahmani;A. Kavousi;H. Chi
摘要 为了更好地了解个体和群体饲养条件对捕食者性能的影响，我们研究了在25±1°C、65±5% RH、光周期为16的条件下，对二斑叶螨(Tetranychus urticae)和卵进行个体或群体饲养后，捕食性植绥螨Athias-Henriot的生命表和捕食率： 8（长：深）小时。单独饲养的捕食者的净繁殖率（R0）、内在增长率（r）、净捕食率（C0）和有限捕食率（ω）分别为40.61个子代、0.2594 d-1、437.3个二斑叶螨卵和4.8668个猎物/天。当捕食者成群饲养时，也获得了类似的值（R0 = 43.10 个后代，r = 0.2837 d-1，C0 = 420.9 个二斑叶螨卵，ω = 5.9054 个猎物/天）。群体饲养的雄性和雌性捕食者的平均成年寿命分别为 28.42 和 25.29 天；这些值明显短于个体饲养螨虫的值（雄性为49.87天，雌性为36天）。我们的结果表明，P. persimilis 螨可以在生物控制计划中群体饲养，而不会对它们的生长和捕食潜力产生负面影响。
Abstract To better understand the effect of individual- and group-rearing conditions on predator performance, we studied the life table and predation rate of the predatory mite, Phytoseiulus persimilis Athias-Henriot, after the mites had been individually- or group-reared on two-spotted spider mites, Tetranychus urticae, eggs at 25±1°C, 65±5% RH and a photoperiod of 16: 8 (L:D) h. The net reproductive rate (R0), intrinsic rate of increase (r), net predation rate (C0), finite predation rate (ω) in the individually-reared predators were 40.61 offspring, 0.2594 d- 1, 437.3 T. urticae eggs, and 4.8668 preys/d, respectively. Similar values were obtained when the predators were reared in groups (R0 = 43.10 offspring, r = 0.2837 d-1, C0 = 420.9 T. urticae eggs, and ω = 5.9054 preys/d). Mean adult longevities were 28.42 and 25.29 d for group-reared male and female predators, respectively; these values were significantly shorter than those of individual-reared mites (49.87 d for male and 36 d for female). Our results showed that P. persimilis mites could be group-reared in biological control programs without negative effect on their growth and predation potential.