Energy Reserve Allocation in the Trade-Off between Migration and Reproduction in Fall Armyworm.

Autor: Xu CF; Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China.; College of Ecology and Environment, YuZhang Normal University, Nanchang 330103, China., Liu PC; Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China., Chapman JW; Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China.; Centre for Ecology and Conservation, University of Exeter, Penryn, Cornwall TR10 9FE, UK.; Environment and Sustainability Institute, University of Exeter, Cornwall Campus, Penryn TR10 9FE, UK., Wotton KR; Centre for Ecology and Conservation, University of Exeter, Penryn, Cornwall TR10 9FE, UK., Qi GJ; Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China., Wang YM; Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China., Hu G; Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China.; Key Laboratory of Surveillance and Management of Invasive Alien Species, Department of Biology and Engineering of Environment, Guiyang University, Guiyang 550005, China.; Guizhou Education Department, Guiyang University, Guiyang 550005, China.
Jazyk: angličtina
Zdroj: Insects [Insects] 2024 Oct 16; Vol. 15 (10). Date of Electronic Publication: 2024 Oct 16.
DOI: 10.3390/insects15100809
Abstrakt: 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.
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje