| 吴正伟 1, 师沛琼 1, 曾永辉 1, 黄炜锋 1, 黄勤知 2, 马新华 3, 郭良珍 1*.3种寄主植物饲养的草地贪夜蛾种群生命表[J].植物保护,2019,45(6):59-64. |
| 3种寄主植物饲养的草地贪夜蛾种群生命表 |
| Population life tables of Spodoptera frugiperda (Lepidoptera: Noctuidae) fed on three host plants |
| 投稿时间：2019-09-06 修订日期：2019-09-16 |
| DOI：10.16688/j.zwbh.2019466 |
| 中文关键词: 草地贪夜蛾 生命表 甘蔗 水稻 玉米 |
| 英文关键词:Spodoptera frugiperda life table sugarcane rice corn |
| 基金项目:国家自然科学基金(40871132); 广东省教育厅“创新强校工程”青年创新人才类项目(2016KQNCX063); 广东海洋大学科研启动经费(R17028, R19025) |
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| 中文摘要: |
| 入侵我国的草地贪夜蛾Spodoptera frugiperda (J.E.Smith) (Lepidoptera: Noctuidae)经研究目前均认为主要是玉米型, 而该虫能否在甘蔗、水稻上完成其生活史并对我国甘蔗、水稻的种植构成威胁值得探讨。本研究对采自玉米上的草地贪夜蛾自然种群用3种不同寄主植物饲养, 并分别构建草地贪夜蛾两性生命表, 比较不同寄主植物对其种群参数的影响。结果表明:取食甘蔗、水稻的草地贪夜蛾低龄幼虫存活率明显低于取食玉米的幼虫; 取食水稻的成虫前期最长(27.75 d±0.50 d), 且雄蛹体重最轻(153.3 mg±9.1 mg); 草地贪夜蛾取食甘蔗、水稻、玉米后其产卵量无显著差异, 平均世代周期依次为31.46 d、33.92 d和29.53 d, 种群内禀增长率(r)分别为0.19、0.14和0.16, 周限增长率(λ)分别为1.21、1.16和1.17, 净增殖率(R0)分别为367.01、135.44和101.25。总体而言, 采自玉米的草地贪夜蛾在水稻上的适合度低于甘蔗和玉米上, 但在甘蔗、水稻上该虫能够完成其生活史实现种群繁衍, 本研究为草地贪夜蛾的预测预报和防治提供了理论依据。 |
| 英文摘要: |
| Spodoptera frugiperda (J.E.Smith) (Lepidoptera, Noctuidae) is an invasive pest, which occurred in our country was mainly corn type. It is worth to explore whether this pest can complete its life history on sugarcane and rice plants, and pose a threat to the planting of sugarcane and rice. In this study, the S. frugiperda collected from corn was fed on three different host plants and their population parameters were compared using the age-stage two-sex life table method. The results showed that the survival rates of larvae fed on sugarcane and rice were significantly lower than that fed on corn; the pre-adult period (27.75 d±0.50 d) and the body weight of male pupa (153.3 mg±9.1 mg) of S. frugiperda fed on rice was the longest and the lightest, respectively. The number of eggs laid by the S. frugiperda fed on three host plants showed no significant differences. The average generation period of S. frugiperda fed on sugarcane, rice and corn were 31.46 d, 33.92 d, and 29.53 d, respectively; the intrinsic rate of increase (r) were 0.19, 0.14 and 0.16, respectively; the finite rate of increase (λ) were 1.21, 1.16 and 1.17, respectively; the net reproductive rate (R0) were 367.01, 135.44 and 101.25, respectively. Overall, although the fitness of S. frugiperda on rice was significantly lower than those on sugarcane and corn, S. frugiperda can complete its life history on both rice and sugarcane. The results provide a theoretical foundation on forecast and prevention of S. frugiperda. |
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