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Ambient Humidity Affects Development, Survival, and Reproduction of the Invasive Fall Armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in China
Abstract
Ambient humidity can directly affect the water balance in insects. The migratory fall armyworm, Spodoptera frugiperda Smith, has spread to more than 60 countries and regions in Africa, Asia, and Oceania that have a great difference in average ambient humidity. Understanding the effects of ambient humidity changes on its development, survival, and reproduction can help to predict its population dynamics in different habitats. Therefore, we evaluated the effects of atmospheric relative humidity (RH) on the development, survival, and reproduction and soil moisture on the pupation and emergence of fall armyworm. As a result, survival and pupal mass increased significantly with increasing RH. Among the five RHs tested, 80% RH was the most suitable for fall armyworm with the highest intrinsic rate of increase (r), finite rate of increase (λ), and net reproduction rate (R0). The population growth at the different RHs in decreasing order was 80 > 100 > 60 > 40 > 20%. A relative moisture (RM) of soil from 6.80 to 47.59% was suitable for fall armyworm pupation, survival, and eclosion, but fall armyworm could not pupate normally in soil with 88.39 and 95.19% RM. The survival and emergence rate of fall armyworm pupae were reduced by irrigation that increased the RM after the mature larvae entered the soil. These findings may be helpful for refining laboratory rearing protocols, population forecasting, and management of fall armyworm.
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“Furthermore, rising temperatures have made previously unsuitable regions habitable for the FAW, enabling its spread to new areas in Africa, Asia, and Europe9–11.”
From Atmospheric cold plasma alters plant traits and negatively affects the growth and development of fall armyworm in rice (2025) · cites this paper as [10]
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Metadata
- Authors
- He, L., Zhao, S., Ali, A., Ge, S., & Wu, K.
- Affiliations
- Institute of Plant Protection (CN)
- Shenyang Normal University (CN)
- Fujian Agriculture and Forestry University (CN)
- Corresponding author
- Wu, Kongming
- Venue
- Journal of Economic Entomology
- Publisher
- Oxford University Press (OUP)
- Published
- 2021-03-26
- Volume
- 114
- Issue
- 3
- Pages
- 1145-1158
- ISSN
- 0022-0493 (ISSN-L)
- 1938-291X
- OpenAlex
- W3137362184
- Cited by
- 33
- References
- 71
- Citations by year
- 2026: 6 · 2025: 12 · 2024: 7 · 2023: 2 · 2022: 6
- FWCI
- 2.58
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model (vor)
- Locations
- Journal of Economic Entomology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Key Research and Development Program of China (2019YFD0300102)
- China Agriculture Research System (CARS-15–19)
- Central Public-Interest Scientific Institution Basal Research Fund (Y2019YJ06)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect behavior and control techniques
- Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Entomological Studies and Ecology
- Keywords
- Spodoptera frugiperda, air humidity, relative humidity, soil moisture, pupation, pupal survival, pupal weight, insect reproduction, population growth, irrigation, invasive pest, laboratory rearing, population forecasting
- MeSH terms
- Africa, Animals, Asia, China, Zea mays, Humidity, Larva, Reproduction, Spodoptera
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- CoChat. (2026). Citation check: Ambient Humidity Affects Development, Survival, and Reproduction of the Invasive Fall Armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in China. https://app.cochat.ai/papers/10.1093/jee/toab056
- The paper
- He, L., Zhao, S., Ali, A., Ge, S., & Wu, K. (2021). Ambient Humidity Affects Development, Survival, and Reproduction of the Invasive Fall Armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in China. Journal of Economic Entomology. https://doi.org/10.1093/jee/toab056
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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