{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T15:05:21Z","timestamp":1779375921009,"version":"3.53.1"},"reference-count":59,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T00:00:00Z","timestamp":1779321600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Joint Research Program of State Key Laboratory of Agricultural and Forestry Biosecurity","award":["SKLJRP2507"],"award-info":[{"award-number":["SKLJRP2507"]}]},{"DOI":"10.13039\/501100012226","name":"Fundamental Research Funds for the Central Universities","doi-asserted-by":"publisher","award":["KJJQ2026010"],"award-info":[{"award-number":["KJJQ2026010"]}],"id":[{"id":"10.13039\/501100012226","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Insects"],"abstract":"<jats:p>Insect\u00a0migration is an energetically costly process often involving a trade-off with reproduction. However, how adult nutritional stress regulates resource allocation between these two life-history traits remains unclear. Here, we compared morphological traits, flight performance, ovarian development, fecundity, and energy reserves between migrants and residents of Cnaphalocrocis medinalis under fed and starved conditions. Morphological analyses showed no significant differences in body weight, body length or forewing length between migrants and residents, regardless of nutritional status. Under starvation, migrants exhibited significantly greater flight distances and speeds than residents, and their flight distance and duration were also higher than those of fed migrants. Starved migrants showed a higher proportion of immature ovaries and higher fecundity, accompanied by a prolonged pre-oviposition period, indicating reproductive delay. Under fed conditions, ovarian development and fecundity were similar between migrants and residents. Energy reserve assays revealed that starved migrants accumulated more abdominal triglycerides but had lower thoracic glycogen than residents, suggesting preferentially triglyceride storage in the abdomen for long-distance flight. Under fed conditions, residents possessed higher thoracic glycogen levels than migrants, whereas no differences were observed in triglyceride levels. These results indicate that C. medinalis prioritizes energy allocation to migration over reproduction under energy shortage, but switches to a strategy that simultaneously meets the demands of both when nutrition is sufficient. Our findings underscore the role of adult nutrition in mediating the energy allocation between migration and reproduction, offering a scientific basis for the precise monitoring and management of this pest.<\/jats:p>","DOI":"10.3390\/insects17050527","type":"journal-article","created":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T13:53:24Z","timestamp":1779371604000},"page":"527","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Adult Nutrition Stress Modulates the Energy Allocation Between Migration and Reproduction in Cnaphalocrocis medinalis"],"prefix":"10.3390","volume":"17","author":[{"given":"Chao-Min","family":"Xu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meng-Yu","family":"Hu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1115-7332","authenticated-orcid":false,"given":"Yan","family":"Wu","sequence":"additional","affiliation":[{"name":"Guizhou Key Laboratory of Agricultural Biosecurity, Guiyang University, Guiyang 550005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0272-1093","authenticated-orcid":false,"given":"Ning-Ning","family":"Wu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, China Agricultural University, Beijing 100193, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1000-5687","authenticated-orcid":false,"given":"Gao","family":"Hu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China"},{"name":"Guizhou Key Laboratory of Agricultural Biosecurity, Guiyang University, Guiyang 550005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-2079-0798","authenticated-orcid":false,"given":"Yu-Meng","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1641\/B570206","article-title":"What is migration?","volume":"57","author":"Dingle","year":"2007","journal-title":"BioScience"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1584","DOI":"10.1126\/science.aah4379","article-title":"Mass seasonal bioflows of high-flying insect migrants","volume":"354","author":"Hu","year":"2016","journal-title":"Science"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"287","DOI":"10.1111\/ele.12407","article-title":"Long-range seasonal migration in insects: Mechanisms, evolutionary drivers and ecological consequences","volume":"18","author":"Chapman","year":"2015","journal-title":"Ecol. Lett."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"794","DOI":"10.1126\/science.1127272","article-title":"How and why do insects migrate?","volume":"313","author":"Holland","year":"2006","journal-title":"Science"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1016\/0163-7827(85)90007-4","article-title":"Insect lipids and lipoproteins, and their role in physiological processes","volume":"24","author":"Beenakkers","year":"1985","journal-title":"Prog. Lipid Res."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"207","DOI":"10.1146\/annurev-ento-112408-085356","article-title":"Insect fat body: Energy, metabolism, and regulation","volume":"55","author":"Arrese","year":"2010","journal-title":"Annu. Rev. Entomol."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Xu, C.-F., Liu, P.-C., Chapman, J.W., Wotton, K.R., Qi, G.-J., Wang, Y.-M., and Hu, G. (2024). Energy reserve allocation in the trade-off between migration and reproduction in fall armyworm. Insects, 15.","DOI":"10.3390\/insects15100809"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"533","DOI":"10.1146\/annurev.en.37.010192.002533","article-title":"The cost of migration in insects","volume":"37","author":"Rankin","year":"1992","journal-title":"Annu. Rev. Entomol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"785","DOI":"10.1038\/189785a0","article-title":"A turning point in the study of insect migration","volume":"189","author":"Kennedy","year":"1961","journal-title":"Nature"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"207","DOI":"10.1146\/annurev.ento.42.1.207","article-title":"Physiology and ecology of dispersal polymorphism in insects","volume":"42","author":"Zera","year":"1997","journal-title":"Annu. Rev. Entomol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1111\/j.1365-3032.2008.00655.x","article-title":"Initiation of flight muscle apoptosis and wing casting in the red imported fire ant Solenopsis invicta","volume":"34","author":"Azizi","year":"2009","journal-title":"Physiol. Entomol."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/bs.aiip.2019.02.001","article-title":"Flight-fecundity tradeoffs in wing-monomorphic insects","volume":"56","author":"Tigreros","year":"2019","journal-title":"Adv. Insect Phys."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"423","DOI":"10.1038\/198423a0","article-title":"Physiological factors in insect migration by flight","volume":"198","author":"Johnson","year":"1963","journal-title":"Nature"},{"key":"ref_14","unstructured":"Johnson, C.G. (1969). Migration and Dispersal of Insects by Flight, Methuen & Co., Ltd."},{"key":"ref_15","first-page":"161","article-title":"Studies on the relationship between variation of ovary canal number and takeoff behavior in green peach aphid","volume":"18","author":"Zhang","year":"1991","journal-title":"J. Plant Prot."},{"key":"ref_16","first-page":"39","article-title":"The relationship between flight behavior and ovary development in the cotton aphid, Aphis gossypii","volume":"40","author":"Liu","year":"2003","journal-title":"Entomol. Knowl."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"997","DOI":"10.1111\/j.1420-9101.2008.01548.x","article-title":"Male sand crickets trade-off flight capability for reproductive potential","volume":"21","author":"Saglam","year":"2008","journal-title":"J. Evol. Biol."},{"key":"ref_18","first-page":"520","article-title":"Insect migration behavior and its regulation","volume":"58","author":"Liu","year":"2021","journal-title":"Chin. J. Appl. Entomol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1039","DOI":"10.1016\/j.jinsphys.2009.07.007","article-title":"Does the onset of sexual maturation terminate the expression of migratory behaviour in moths? A study of the oriental armyworm, Mythimna separata","volume":"55","author":"Zhao","year":"2009","journal-title":"J. Insect Physiol."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"335","DOI":"10.1017\/S0007485300041110","article-title":"Effects of temperature and photoperiod on development and pre-reproductive period of the silver Y moth Autographa gamma (Lepidoptera: Noctuidae)","volume":"82","author":"Hill","year":"1992","journal-title":"Bull. Entomol. Res."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Drake, V.A., and Gatehouse, A.G. (1995). Migratory potential in insects: Variation in an uncertain environment. Insect Migration: Tracking Resources Through Space and Time, Cambridge University Press.","DOI":"10.1017\/CBO9780511470875"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"516","DOI":"10.1603\/EN10199","article-title":"Regulation of migration in Mythimna separata (Walker) in China: A review integrating environmental, physiological, hormonal, genetic, and molecular factors","volume":"40","author":"Jiang","year":"2011","journal-title":"Environ. Entomol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"27062","DOI":"10.1021\/acs.jafc.4c07074","article-title":"Nutritional resources regulate the reproduction or migration of Spodoptera frugiperda through juvenile hormones and 20-hydroxyecdysone","volume":"72","author":"Zhang","year":"2024","journal-title":"J. Agric. Food Chem."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1007\/s10340-007-0180-y","article-title":"Effect of adult nutrition and insect density on the performance of spotted stem borer, Chilo partellus in laboratory cultures","volume":"81","author":"Hari","year":"2008","journal-title":"J. Pest Sci."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1002\/arch.20255","article-title":"Starvation influences allatotropin gene expression and juvenile hormone titer in the female adult oriental armyworm, Mythimna separata","volume":"68","author":"Zhang","year":"2008","journal-title":"Arch. Insect Biochem. Physiol."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"404","DOI":"10.3390\/insects4030404","article-title":"Influence of age and nutritional status on flight performance of the Asian tiger mosquito Aedes albopictus (Diptera: Culicidae)","volume":"4","author":"Kaufmann","year":"2013","journal-title":"Insects"},{"key":"ref_27","first-page":"1573","article-title":"The effect of feeding and mating on the development of flight muscle in Agrotis ypsilon","volume":"50","author":"Wang","year":"2013","journal-title":"Chin. J. Appl. Entomol."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1093\/ee\/22.1.141","article-title":"Influence of larval starvation and adult diet on long-duration flight behavior of the migratory moth Agrotis ipsilon (Lepidoptera: Noctuidae)","volume":"22","author":"Sappington","year":"1993","journal-title":"Environ. Entomol."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"104838","DOI":"10.1016\/j.jinsphys.2025.104838","article-title":"How the diet influences lepidopteran reproduction: Morpho-functional, behavioral, and endocrine aspects","volume":"164","author":"Force","year":"2025","journal-title":"J. Insect Physiol."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1111\/j.1365-2311.1986.tb00274.x","article-title":"Reproductive strategies of female butterflies: Variation in and constraints on fecundity","volume":"11","author":"Boggs","year":"2008","journal-title":"Ecol. Entomol."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"435","DOI":"10.1016\/j.jinsphys.2004.11.014","article-title":"Starvation affects vitellogenin production but not vitellogenin mRNA levels in the lubber grasshopper, Romalea microptera","volume":"51","author":"Fei","year":"2005","journal-title":"J. Insect Physiol."},{"key":"ref_32","first-page":"660","article-title":"Observation of ovary anatomy and impact oogenesis on adult nutrition in female Liriomyza sativae (Diptera: Agromyzidae)","volume":"39","author":"Xuan","year":"2017","journal-title":"J. Environ. Entomol."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"532","DOI":"10.1016\/j.biocontrol.2006.06.002","article-title":"Effect of diet and mating status on ovarian development and oviposition in the polyphagous predator Macrolophus caliginosus (Heteroptera: Miridae)","volume":"39","author":"Vandekerkhove","year":"2006","journal-title":"Biol. Control"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"e2422595122","DOI":"10.1073\/pnas.2422595122","article-title":"Climate change is leading to an ecological trap in a migratory insect","volume":"122","author":"Zhang","year":"2025","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_35","doi-asserted-by":"crossref","unstructured":"Guo, J.W., Li, P., Zhang, J., Liu, X.-D., Zhai, B.-P., and Hu, G. (2019). Cnaphalocrocis medinalis moths decide to migrate when suffering nutrient shortage on the first day after emergence. Insects, 10.","DOI":"10.3390\/insects10100364"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"370","DOI":"10.1111\/jen.12179","article-title":"Effects of larval density and food stress on life-history traits of Cnaphalocrocis medinalis (Lepidoptera: Pyralidae)","volume":"139","author":"Yang","year":"2015","journal-title":"J. Appl. Entomol."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"1672","DOI":"10.1111\/1744-7917.13020","article-title":"Reproduction does not impede the stopover departure to ensure a potent migration in Cnaphalocrocis medinalis moths","volume":"29","author":"Guo","year":"2022","journal-title":"Insect Sci."},{"key":"ref_38","first-page":"592","article-title":"Observations on migratory behavior of Cnaphalocrocis medinalis: When will they take-off?","volume":"50","author":"Yang","year":"2013","journal-title":"Chin. J. Appl. Entomol."},{"key":"ref_39","first-page":"883","article-title":"A method for rearing the rice leaf folder (Cnaphalocrocis medinalis) using wheat seedlings","volume":"04","author":"Zhu","year":"2015","journal-title":"Chin. J. Appl. Entomol."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"18388","DOI":"10.1038\/s41598-019-54721-x","article-title":"Female bias in an immigratory population of Cnaphalocrocis medinalis moths based on field surveys and laboratory tests","volume":"9","author":"Guo","year":"2019","journal-title":"Sci. Rep."},{"key":"ref_41","doi-asserted-by":"crossref","unstructured":"Chen, H., Wang, Y., Huang, L., Xu, C.-F., Li, J.-H., Wang, F.-Y., Cheng, W., Gao, B.-Y., Chapman, J.W., and Hu, G. (2022). Flight capability and the low temperature threshold of a chinese field population of the fall armyworm Spodoptera frugiperda. Insects, 13.","DOI":"10.3390\/insects13050422"},{"key":"ref_42","first-page":"97","article-title":"Application of ovarian dissection of female Cnaphalocrocis medinalis moths in prediction and forecasting system","volume":"16","author":"Zhang","year":"1979","journal-title":"Chin. Bull. Entomol."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1017\/S0007485307005470","article-title":"A radar study of emigratory flight and layer formation by insects at dawn over southern Britain","volume":"98","author":"Reynolds","year":"2008","journal-title":"Bull. Entomol. Res."},{"key":"ref_44","first-page":"1202","article-title":"Migratory biology of the white backed planthopper: Take-off and emigration","volume":"48","author":"Luo","year":"2011","journal-title":"Chin. J. Appl. Entomol."},{"key":"ref_45","first-page":"42","article-title":"The takeoff behavior of Laodelphax striatellus and its relation to the ovarian development","volume":"45","author":"Wang","year":"2008","journal-title":"Chin. Bull. Entomol."},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Wang, Y.-P., Tu, X.-B., Lin, P.-J., Li, S., Xu, C.-M., Wang, X.-Q., Reynolds, D.R., Chapman, J., Zhang, Z.H., and Hu, G. (2020). Migratory take-off behaviour of the Mongolian grasshopper Oedaleus asiaticus. Insects, 11.","DOI":"10.3390\/insects11070416"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"4051","DOI":"10.1002\/ps.8772","article-title":"Characteristics and seasonal variation of fall armyworm migratory behavior in their year-round breeding areas in South China","volume":"81","author":"Chen","year":"2025","journal-title":"Pest Manag. Sci."},{"key":"ref_48","first-page":"38","article-title":"The influence of larval rearing density on flight capacity and fecundity of adult oriental armyworm, Mythimna separata (Walker)","volume":"38","author":"Luo","year":"1995","journal-title":"Acta Entomol. Sin."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1007\/s10340-025-01991-2","article-title":"Larval density-driven cannibalism shapes trade-offs among development, flight, and reproduction in Spodoptera frugiperda","volume":"99","author":"Liu","year":"2025","journal-title":"J. Pest Sci."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"1579","DOI":"10.1603\/EN09314","article-title":"Effects of larval density on flight potential of the beet webworm, Loxostege sticticalis (Lepidoptera: Pyralidae)","volume":"39","author":"Kong","year":"2010","journal-title":"Environ. Entomol."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"jeb251191","DOI":"10.1242\/jeb.251191","article-title":"Energetic constraints on multi-day flights in migratory locusts","volume":"229","author":"Cease","year":"2025","journal-title":"J. Exp. Biol."},{"key":"ref_52","first-page":"895","article-title":"Influences of starvation on the first day after emergence on ovarian development and flight potential in adults of the oriental armyworm, Mythimna separata (Walker) (Lepidopterea: Noctuidae)","volume":"06","author":"Zhang","year":"2006","journal-title":"Acta Entomol. Sin."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1017\/S0007485300036130","article-title":"Observations of the autumn migration of the rice leaf roller Cnaphalocrocis medinalis (Lepidoptera: Pyralidae) and other moths in eastern China","volume":"85","author":"Riley","year":"1995","journal-title":"Bull. Entomol. Res."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"1327","DOI":"10.1126\/science.175.4028.1327","article-title":"Migration strategies of insects","volume":"175","author":"Dingle","year":"1972","journal-title":"Science"},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"419","DOI":"10.1111\/j.1365-3032.1989.tb01111.x","article-title":"Trade-off between flight and reproduction in the African armyworm moth, Spodoptera exempta","volume":"14","author":"Gunn","year":"1989","journal-title":"Physiol. Entomol."},{"key":"ref_56","first-page":"280","article-title":"The ovarian development of the brown planthopper (Nilaparvata lugens Stal) and its relation to migration","volume":"22","author":"Chen","year":"1979","journal-title":"Acta Entomol. Sin."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"1631","DOI":"10.1016\/j.jinsphys.2010.06.006","article-title":"Relationship of flight and reproduction in beet armyworm, Spodoptera exigua (Lepidoptera: Noctuidae), a migrant lacking the oogenesis-flight syndrome","volume":"56","author":"Jiang","year":"2010","journal-title":"J. Insect Physiol."},{"key":"ref_58","unstructured":"Nation, J.L. (2016). Insect Physiology and Biochemistry, CRC Press."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"1751","DOI":"10.1002\/ps.7904","article-title":"Physiological and behavioral basis of diamondback moth Plutella xylostella migration and its association with heat stress","volume":"80","author":"Yang","year":"2024","journal-title":"Pest Manag. Sci."}],"container-title":["Insects"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2075-4450\/17\/5\/527\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T14:07:34Z","timestamp":1779372454000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2075-4450\/17\/5\/527"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,5,21]]},"references-count":59,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2026,5]]}},"alternative-id":["insects17050527"],"URL":"https:\/\/doi.org\/10.3390\/insects17050527","relation":{},"ISSN":["2075-4450"],"issn-type":[{"value":"2075-4450","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,5,21]]}}}