旋歧夜蛾形态和生活史观察
Morphology and life history of Discestra trifolii (Lepidoptera: Noctuidae)
张 航** 杨安沛 白微微 高海峰 李广阔 王锁牢***
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DOI：10.7679/j.issn.2095-1353.2018.132
作者单位：新疆农业科学院植物保护研究所，农业部西北荒漠绿洲作物有害生物综合治理重点实验室，乌鲁木齐 830091
中文关键词：旋歧夜蛾，形态，生长发育，生活史
英文关键词： Discestra trifolii, morphology, growth and development, life history
中文摘要：
【目的】 初步研究旋歧夜蛾Discestra trifolii (Hufnagel)的形态特征、生物学特性以及生活史。 【方法】 通过室内观察，数据测量与统计，总结与分析了旋歧夜蛾的形态、生物学特性等问题。 【结果】 在室内饲养条件下，旋歧夜蛾幼虫6龄，旋歧夜蛾完成1代的生命周期为（44.27±3.10）d，卵期（4.02±0.35）d，存活率96.97%±1.20%，幼虫期（17.87±1.40）d，存活率75.76%±6.94%，蛹期（10.48± 0.80）d，存活率93.86%±0.46%，成虫期（12.62±2.82）d。【结论】 基本明确了旋歧夜蛾的形态和生活史，有助于制定有效的旋歧夜蛾防治措施，同时为旋歧夜蛾其它研究奠定基础。
英文摘要：
[Objectives] To
investigate the morphology, biological characteristics and life cycle of Discestra trifolii (Hufnagel). [Methods] Laboratory observation. [Results] The larvae of D. trifolii had 6 instars, and the duration of an entire generation was
(44.27±3.10) d under laboratory conditions. The egg stage lasted for
(4.02±0.35) d, and egg fertility was about 96.97%±1.20%. The larval stage lasted
for (17.87±1.40) d, and the survival rate was 75.76%±6.94%. The pupal
stage lasted for (10.48±0.80) d, and the survival rate was 93.86%±0.46%. The
life span of adults was (12.62±2.82) d. [Conclusion] The morphology and life history of D. trifolii will not only help to design efficient pest control
methods, but also provide a theoretical basis for further study of this species.