Night Warming Has Mixed Effects on the Development of the Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), in Southern China
The Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), is a serious migratory pest. After invading China in 2019, the species was established as a year-round breeding population in most of the southern provinces. The area of winter maize in this region has been increas...
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MDPI AG
2024-03-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/15/3/180 |
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| author | Yangcheng Xu Haipeng Chi Mingyue Shi Zhaozhi Lu Myron P. Zalucki |
| author_facet | Yangcheng Xu Haipeng Chi Mingyue Shi Zhaozhi Lu Myron P. Zalucki |
| author_sort | Yangcheng Xu |
| collection | DOAJ |
| description | The Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), is a serious migratory pest. After invading China in 2019, the species was established as a year-round breeding population in most of the southern provinces. The area of winter maize in this region has been increasing due to the huge demand of fresh maize consumption, which is potentially at risk from this invasive pest, although the growth and development of <i>S. frugiperda</i> in the region’s changing climate is unclear, particularly with rising temperatures at night. Here, we used the highest daytime temperatures of 27 °C, 24 °C, 20 °C and decreased these by 2, 4 and 6 °C to reflect the range of nighttime temperatures indicative of winter conditions in a warming climate to evaluate the effect of increasing night temperatures on the growth and development of <i>S. frugiperda</i>. Results show that the survival of larvae and pupae significantly declined with daytime temperatures declining and the nighttime temperature range increasing. Significant developmental effects were observed across all daytime–nighttime temperature treatments, except for adults. Additionally, there were significant interaction effects for all stages, except the egg stage, and generation time. The development rate increased with the increasing daytime temperatures and nighttime temperatures, except for the intermediate treatments (Group II). The uniformity of pupation and emergence times were higher under high daytime temperatures and nighttime temperature treatments. Predictions of FAW development and warnings to local farmers need to be adjusted to take into account the more rapid development when nighttime temperatures increase in the warming climate. These results will support decision makers in developing long-term management strategies for FAW in southern China. |
| first_indexed | 2024-04-24T18:10:15Z |
| format | Article |
| id | doaj.art-67ab52d182f84a9186d826889d5fb6b4 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-04-24T18:10:15Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-67ab52d182f84a9186d826889d5fb6b42024-03-27T13:47:16ZengMDPI AGInsects2075-44502024-03-0115318010.3390/insects15030180Night Warming Has Mixed Effects on the Development of the Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), in Southern ChinaYangcheng Xu0Haipeng Chi1Mingyue Shi2Zhaozhi Lu3Myron P. Zalucki4School of Life Science, Institutes of Life Science and Green Development, Hebei University, Baoding 071002, ChinaShandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, ChinaShandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, ChinaShandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, ChinaSchool of Life Science, Institutes of Life Science and Green Development, Hebei University, Baoding 071002, ChinaThe Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), is a serious migratory pest. After invading China in 2019, the species was established as a year-round breeding population in most of the southern provinces. The area of winter maize in this region has been increasing due to the huge demand of fresh maize consumption, which is potentially at risk from this invasive pest, although the growth and development of <i>S. frugiperda</i> in the region’s changing climate is unclear, particularly with rising temperatures at night. Here, we used the highest daytime temperatures of 27 °C, 24 °C, 20 °C and decreased these by 2, 4 and 6 °C to reflect the range of nighttime temperatures indicative of winter conditions in a warming climate to evaluate the effect of increasing night temperatures on the growth and development of <i>S. frugiperda</i>. Results show that the survival of larvae and pupae significantly declined with daytime temperatures declining and the nighttime temperature range increasing. Significant developmental effects were observed across all daytime–nighttime temperature treatments, except for adults. Additionally, there were significant interaction effects for all stages, except the egg stage, and generation time. The development rate increased with the increasing daytime temperatures and nighttime temperatures, except for the intermediate treatments (Group II). The uniformity of pupation and emergence times were higher under high daytime temperatures and nighttime temperature treatments. Predictions of FAW development and warnings to local farmers need to be adjusted to take into account the more rapid development when nighttime temperatures increase in the warming climate. These results will support decision makers in developing long-term management strategies for FAW in southern China.https://www.mdpi.com/2075-4450/15/3/180FAWnighttime warmingaccelerated developmentdegree days |
| spellingShingle | Yangcheng Xu Haipeng Chi Mingyue Shi Zhaozhi Lu Myron P. Zalucki Night Warming Has Mixed Effects on the Development of the Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), in Southern China Insects FAW nighttime warming accelerated development degree days |
| title | Night Warming Has Mixed Effects on the Development of the Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), in Southern China |
| title_full | Night Warming Has Mixed Effects on the Development of the Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), in Southern China |
| title_fullStr | Night Warming Has Mixed Effects on the Development of the Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), in Southern China |
| title_full_unstemmed | Night Warming Has Mixed Effects on the Development of the Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), in Southern China |
| title_short | Night Warming Has Mixed Effects on the Development of the Fall Armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera, Noctuidae), in Southern China |
| title_sort | night warming has mixed effects on the development of the fall armyworm i spodoptera frugiperda i lepidoptera noctuidae in southern china |
| topic | FAW nighttime warming accelerated development degree days |
| url | https://www.mdpi.com/2075-4450/15/3/180 |
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