| 田铃,李愉,谢晓乐,等.草地贪夜蛾取食桑树的生命周期研究[J].广东农业科学,2024,(8-9):- |
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草地贪夜蛾取食桑树的生命周期研究 |
| Study on the life cycle of Spodoptera frugiperda feeding on mulberry leaves |
| 投稿时间：2024-09-03 修订日期：2024-09-18 |
| DOI： |
| 中文关键词: 草地贪夜蛾 桑树 生长发育 两性生命表 |
| 英文关键词: Spodoptera frugiperda Mulberry Growth and development Two-sex life table |
| 基金项目:国家自然科学基金(NSFC31970463)、广西蚕桑生态学与智能化技术应用重点实验室开放课题（2024GXKLSEAIT02）、岭南现代农业项目重点实验室(NZ2021021) |
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| 摘要点击次数: 80 |
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| 中文摘要: |
| 【目的】探究取食桑叶对草地贪夜蛾生长发育的影响，为后续探索草地贪夜蛾对桑园的为害提供理论依据和参考。【方法】建立取食人工饲料和桑叶的草地贪夜蛾种群，并测定其发育历期、产卵量、蛹重和化蛹率等两性生命表相关指标，采用两性生命表分析方法计算种群参数，之后进行方差分析以及绘制曲线图。【结果】草地贪夜蛾取食桑叶和人工饲料的总发育历期分别为44.18 ± 0.93、32.30 ± 0.26 d、幼虫存活率分别为41.17 ± 5.88%和55.56 ± 12.73%、蛹重分别为174.4 ± 34.2、225.9 ± 23.7 mg/头、单雌产卵量分别为499.58 ± 278.67、877.40 ± 440.79粒/雌、卵孵化率均为100%。【结论】草地贪夜蛾取食桑叶和人工饲料均可以完成世代发育，和取食人工饲料相比，草地贪夜蛾取食桑叶生长发育速度较慢、发育整齐度低，存活率和产卵量较低。所以，在自然条件下当虫口密度过大或者最适寄主植物缺少时，草地贪夜蛾有可能会对桑树构成威胁。 |
| 英文摘要: |
| 【Objective】The study is to explore the effect of mulberry leaf feeding on the growth and development of S. frugiperda, in order to provide a theoretical basis and reference for the potential damage of mulberry gardens caused by S. frugiperda.【Method】The populations of S. frugiperda feeding on artificial diet and mulberry leaves were established, and the relevant indexes of two-sex life tables, including development duration, oviposition amount, pupal weight and pupation rate, were measured. The population parameters were calculated using two-sex life table analysis, followed by ANOVA and graphed.【Result】The total developmental duration of S. frugiperda feeding on mulberry leaves and artificial diet is 44.18 ± 0.93 days and 32.30 ± 0.26 days, the larval survival rates is 41.17 ± 5.88% and 55.56 ± 12.73%, the weight is 174.4 ± 34.2 and 225.9 ± 23.7 mg/ pupa, the number of eggs laid by single female moth is 499.58 ± 278.67 and 877.40 ± 440.79, and the egg hatching rate is 100%.【Conclusion】S. frugiperda could complete the generation development of mulberry leaves and artificial diet, and compared with artificial diet feed, the growth and development rate of mulberry leaves fed S. frugiperda is slower, the developmental uniformity, the survival rate, and oviposition are all lower. In conclusion, under natural conditions, when the population density is too large or the most suitable host plant is lack, S. frugiperda larvae pose a potential to live on mulberry leaves. |
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