Pakyari Hajar, McNeill Mark R
Department of Entomology, Takestan Branch, Islamic Azad University, Takestan, Iran.
AgResearch Ltd, Lincoln Research Centre, Private Bag 4749, Christchurch8140, New Zealand.
Bull Entomol Res. 2020 Oct;110(5):620-629. doi: 10.1017/S0007485320000115. Epub 2020 Apr 13.
The effect of five photoperiods (0:24, 6:18; 12:12, 18:6, and 24:0 light:dark (L:D)) on the development, reproduction, and survival of the predatory thrips Scolothrips longicornis Priesner fed on the two-spotted spider mite, Tetranychus urticae Koch, was tested under laboratory conditions at 60% RH and 25°C. Development time of almost all immature stages in S. longicornis was the shortest under long day lengths (18:6 and 24:0 L:D). The adult duration of both sexes decreased with increasing light length from 6 to 24 h. The longevity of male and female decreased with increasing light length. Under a 12:12 L:D photoperiod, S. longicornis females had the longest oviposition period and longevity, highest net reproductive rate (R0 = 15.37), intrinsic rate of natural increase (r = 0.141), and finite rate of increase (λ = 1.151). Life table parameters showed a significant difference with various photoperiods. The consequences of the present research demonstrated that a 12:12 L:D photoperiod is the most favorable for the reproduction and development of S. longicornis fed on T. urticae, and that for mas rearing for augmentative biological control programs, would be the ideal photoperiod to maximize production.
在60%相对湿度和25°C的实验室条件下，测试了五种光周期（0:24、6:18、12:12、18:6和24:0光:暗（L:D））对以二斑叶螨（Tetranychus urticae Koch）为食的捕食性蓟马长角管蓟马（Scolothrips longicornis Priesner）的发育、繁殖和存活的影响。长角管蓟马几乎所有未成熟阶段的发育时间在长日照（18:6和24:0 L:D）下最短。两性成虫的持续时间随着光照时长从6小时增加到24小时而减少。雄性和雌性的寿命随着光照时长的增加而减少。在12:12 L:D光周期下，长角管蓟马雌性具有最长的产卵期和寿命、最高的净繁殖率（R0 = 15.37）、内禀自然增长率（r = 0.141）和有限增长率（λ = 1.151）。生命表参数在不同光周期下存在显著差异。本研究结果表明，12:12 L:D光周期最有利于以二斑叶螨为食的长角管蓟马的繁殖和发育，对于大规模饲养以用于增殖性生物防治计划而言，将是使产量最大化的理想光周期。
