文献类型： 外文期刊

作者： Xu, Chuan-Feng ¹ ; Liu, Peng-Cheng ¹ ; Chapman, Jason W. ¹ ; Wotton, Karl R. ³ ; Qi, Guo-Jun ⁵ ; Wang, Yu-Meng ¹ ; Hu, Gao ¹ ;

作者机构： 1.Nanjing Agr Univ, Dept Entomol, Nanjing 210095, Peoples R China

2.YuZhang Normal Univ, Coll Ecol & Environm, Nanchang 330103, Peoples R China

3.Univ Exeter, Ctr Ecol & Conservat, Penryn TR10 9FE, Cornwall, England

4.Univ Exeter, Environm & Sustainabil Inst, Cornwall Campus, Penryn TR10 9FE, England

5.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou 510640, Peoples R China

6.Guiyang Univ, Dept Biol & Engn Environm, Key Lab Surveillance & Management Invas Alien Spec, Guiyang 550005, Peoples R China

7.Guiyang Univ, Guizhou Educ Dept, Guiyang 550005, Peoples R China

关键词： migration and reproduction; transcriptomics; Spodoptera frugiperda; energy reallocation; flight capacity

期刊名称：INSECTS （ 影响因子：2.9； 五年影响因子：3.3 ）

ISSN：

年卷期： 2024 年 15 卷 10 期

页码：

收录情况： SCI

摘要： Striking a trade-off between migration and reproduction becomes imperative during long-range migration to ensure proper energy allocation. However, the mechanisms involved in this trade-off remain poorly understood. Here, we used a takeoff assay to distinguish migratory from non-migratory individuals in the fall armyworm, which is a major migratory insect worldwide. Migratory females displayed delayed ovarian development and flew further and faster than non-migratory females during tethered flight. Transcriptome analyses demonstrated an enrichment of fatty acid genes across successive levels of ovarian development and different migratory behaviors. Additionally, genes with roles in phototransduction and carbohydrate digestion along with absorption function were enriched in migratory females. Consistent with this, we identified increased abdominal lipids in migratory females that were mobilized to supply energy to the flight muscles in the thorax. Our study reveals that the fall armyworm faces a trade-off in allocating abdominal triglycerides between migration and reproduction during flight. The findings provide valuable insights for future research on this trade-off and highlight the key energy components involved in this strategic balance.