Contrasting effects of acute heat shock on physiological and ecological performance of the fall armyworm
Temperature is a critical factor that influences the behavior, physiology, and development of ectothermic organisms. This has become even more important as acute temperature stress associated with global climate change becomes the new norm. Using the in...
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2023
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| Online Access: | https://cris.library.msu.ac.zw//handle/11408/5685 |
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| author | Abongile Mbande Reyard Mutamiswa Casper Nyamukondiwa Frank Chidawanyika |
| author2 | Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa |
| author_facet | Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa Abongile Mbande Reyard Mutamiswa Casper Nyamukondiwa Frank Chidawanyika |
| author_sort | Abongile Mbande |
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| description | Temperature is a critical factor that influences the behavior, physiology, and development of ectothermic organisms. This has become even more important as acute temperature stress associated with global climate change becomes the new norm. Using the invasive fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), we assessed its physiological and ecological responses following acute heat stress, synonymous to heat waves associated with recent climate change. Specifically, we measured the effects of short-term exposure (for 2 h) to heat shock (at 32, 35, and 38 °C) on physiological responses, such as critical thermal minima (CTmin) and maxima (CTmax), and life-history traits, such as reproductive success (fecundity and hatching success) and longevity, using virgin adults. Our results showed that prior acute heat shock compromised cold tolerance (CTmin) while enhancing heat tolerance (CTmax). In addition, heat shock reduced fecundity and hatching success and had dramatic effects on adult longevity. We conclude that acute heat stress associated with shifting environmental conditions may generally offset key physiological traits, affect reproduction and thus population persistence, and simultaneously have complex effects on adult lifespan. |
| format | research article |
| id | ir-11408-5685 |
| institution | My University |
| language | English |
| publishDate | 2023 |
| publisher | Wiley |
| record_format | dspace |
| spelling | ir-11408-56852023-06-14T07:41:27Z Contrasting effects of acute heat shock on physiological and ecological performance of the fall armyworm Abongile Mbande Reyard Mutamiswa Casper Nyamukondiwa Frank Chidawanyika Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa; Tugwi-Mukosi Multidisciplinary Research Institute, Midlands State University, Gweru, Zimbabwe; Department of Zoology and Entomology, Rhodes University, Makhanda, South Africa Department of Zoology and Entomology, Rhodes University, Makhanda, South Africa; Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa; International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya Acute temperature stress Climate change Ectothermic organism Fall armyworm Heat shock Invasive species Lepidoptera Life- history traits Longevity Noctuidae Spodoptera frugiperda Thermal plasticity Temperature is a critical factor that influences the behavior, physiology, and development of ectothermic organisms. This has become even more important as acute temperature stress associated with global climate change becomes the new norm. Using the invasive fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), we assessed its physiological and ecological responses following acute heat stress, synonymous to heat waves associated with recent climate change. Specifically, we measured the effects of short-term exposure (for 2 h) to heat shock (at 32, 35, and 38 °C) on physiological responses, such as critical thermal minima (CTmin) and maxima (CTmax), and life-history traits, such as reproductive success (fecundity and hatching success) and longevity, using virgin adults. Our results showed that prior acute heat shock compromised cold tolerance (CTmin) while enhancing heat tolerance (CTmax). In addition, heat shock reduced fecundity and hatching success and had dramatic effects on adult longevity. We conclude that acute heat stress associated with shifting environmental conditions may generally offset key physiological traits, affect reproduction and thus population persistence, and simultaneously have complex effects on adult lifespan. 525 534 2023-06-14T07:41:26Z 2023-06-14T07:41:26Z 2023-05-11 research article https://cris.library.msu.ac.zw//handle/11408/5685 10.1111/eea.13310 en Entomologia Experimentalis et Applicata 1570-7458 open Wiley |
| spellingShingle | Acute temperature stress Climate change Ectothermic organism Fall armyworm Heat shock Invasive species Lepidoptera Life- history traits Longevity Noctuidae Spodoptera frugiperda Thermal plasticity Abongile Mbande Reyard Mutamiswa Casper Nyamukondiwa Frank Chidawanyika Contrasting effects of acute heat shock on physiological and ecological performance of the fall armyworm |
| title | Contrasting effects of acute heat shock on physiological and ecological performance of the fall armyworm |
| title_full | Contrasting effects of acute heat shock on physiological and ecological performance of the fall armyworm |
| title_fullStr | Contrasting effects of acute heat shock on physiological and ecological performance of the fall armyworm |
| title_full_unstemmed | Contrasting effects of acute heat shock on physiological and ecological performance of the fall armyworm |
| title_short | Contrasting effects of acute heat shock on physiological and ecological performance of the fall armyworm |
| title_sort | contrasting effects of acute heat shock on physiological and ecological performance of the fall armyworm |
| topic | Acute temperature stress Climate change Ectothermic organism Fall armyworm Heat shock Invasive species Lepidoptera Life- history traits Longevity Noctuidae Spodoptera frugiperda Thermal plasticity |
| url | https://cris.library.msu.ac.zw//handle/11408/5685 |
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