Thermal stress exposure of pupal oriental fruit fly has strong and trait-specific consequences in adult flies
Global climate change is projected to increase the incidence of heat waves, their magnitude and duration resulting in insects experiencing increasing environmental stress in both natural and managed ecosystems. While studies on insect thermal tolerance are rapidly increasing, variation across develo...
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Wiley and Royal Entomological Society
2022
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| Online Access: | https://cris.library.msu.ac.zw//handle/11408/5284 https://doi.org/10.1111/phen.12400 |
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| author | Reyard Mutamiswa Vimbai Lisa Tarusikirwa Casper Nyamukondiwa Ross N. Cuthbert Frank Chidawanyika |
| author2 | Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa; Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology (BIUST), Palapye, Botswana; Tugwi-Mukosi Multidisciplinary Research Institute, Midlands State University, Gweru, Zimbabwe |
| author_facet | Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa; Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology (BIUST), Palapye, Botswana; Tugwi-Mukosi Multidisciplinary Research Institute, Midlands State University, Gweru, Zimbabwe Reyard Mutamiswa Vimbai Lisa Tarusikirwa Casper Nyamukondiwa Ross N. Cuthbert Frank Chidawanyika |
| author_sort | Reyard Mutamiswa |
| collection | DSpace |
| description | Global climate change is projected to increase the incidence of heat waves, their magnitude and duration resulting in insects experiencing increasing environmental stress in both natural and managed ecosystems. While studies on insect thermal tolerance are rapidly increasing, variation across developmental or juvenile stress cross-stage effects within and across generations remain largely unexplored. Yet in holometabolous insects, heat stress at an early developmental stage may influence performance and survival during later stages. Here, we investigated the effects of pupal mild heat stress on the performance of laboratory-reared adult Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) measured as longevity, critical thermal maximum (CTmax), critical thermal minima (CTmin), heat knockdown time (HKDT) and chill coma recovery time (CCRT). Pupal heat stress significantly influenced performance of B. dorsalis adults resulting in impaired longevity and heat tolerance (CTmax and HKDT) in both sexes with improved and compromised cold tolerance (CTmin and CCRT) in females and males, respectively. These findings highlight the role of juvenile stages in mediating stress responses at adult stages. For B. dorsalis, pupal heat stress largely compromised thermal tolerance implying that the species has limited potential to shift its geographic range in heat prone areas. Significant benefits in cold tolerance in females following heat stress may help in improving survival in the cold in the short-term despite restricted activity to the same traits in males. This study suggests that basal heat tolerance and not short-term compensatory thermal plasticity following heat stress may have aided the recent invasion of B. dorsalis in African landscapes. |
| format | research article |
| id | ir-11408-5284 |
| institution | My University |
| language | English |
| publishDate | 2022 |
| publisher | Wiley and Royal Entomological Society |
| record_format | dspace |
| spelling | ir-11408-52842022-12-14T06:41:44Z Thermal stress exposure of pupal oriental fruit fly has strong and trait-specific consequences in adult flies Reyard Mutamiswa Vimbai Lisa Tarusikirwa Casper Nyamukondiwa Ross N. Cuthbert Frank Chidawanyika Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa; Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology (BIUST), Palapye, Botswana; Tugwi-Mukosi Multidisciplinary Research Institute, Midlands State University, Gweru, Zimbabwe Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology (BIUST), Palapye, Botswana Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology (BIUST), Palapye, Botswana; Department of Zoology and Entomology, Rhodes University, Makhanda, South Africa School of Biological Sciences, Queen's University Belfast, Northern Ireland, UK Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa; Plant Health Department, International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya Bactrocera dorsalis Climate change Heat hardening Invasive species Longevity Mild heat exposure Thermal tolerance Global climate change is projected to increase the incidence of heat waves, their magnitude and duration resulting in insects experiencing increasing environmental stress in both natural and managed ecosystems. While studies on insect thermal tolerance are rapidly increasing, variation across developmental or juvenile stress cross-stage effects within and across generations remain largely unexplored. Yet in holometabolous insects, heat stress at an early developmental stage may influence performance and survival during later stages. Here, we investigated the effects of pupal mild heat stress on the performance of laboratory-reared adult Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) measured as longevity, critical thermal maximum (CTmax), critical thermal minima (CTmin), heat knockdown time (HKDT) and chill coma recovery time (CCRT). Pupal heat stress significantly influenced performance of B. dorsalis adults resulting in impaired longevity and heat tolerance (CTmax and HKDT) in both sexes with improved and compromised cold tolerance (CTmin and CCRT) in females and males, respectively. These findings highlight the role of juvenile stages in mediating stress responses at adult stages. For B. dorsalis, pupal heat stress largely compromised thermal tolerance implying that the species has limited potential to shift its geographic range in heat prone areas. Significant benefits in cold tolerance in females following heat stress may help in improving survival in the cold in the short-term despite restricted activity to the same traits in males. This study suggests that basal heat tolerance and not short-term compensatory thermal plasticity following heat stress may have aided the recent invasion of B. dorsalis in African landscapes. 2022-12-14T06:41:44Z 2022-12-14T06:41:44Z 2022-11-23 research article https://cris.library.msu.ac.zw//handle/11408/5284 https://doi.org/10.1111/phen.12400 en #PLACEHOLDER_PARENT_METADATA_VALUE# University of the Free State Physiological Entomology 0307-6962 UFS-ESD2020/0154. open Wiley and Royal Entomological Society |
| spellingShingle | Bactrocera dorsalis Climate change Heat hardening Invasive species Longevity Mild heat exposure Thermal tolerance Reyard Mutamiswa Vimbai Lisa Tarusikirwa Casper Nyamukondiwa Ross N. Cuthbert Frank Chidawanyika Thermal stress exposure of pupal oriental fruit fly has strong and trait-specific consequences in adult flies |
| title | Thermal stress exposure of pupal oriental fruit fly has strong and trait-specific consequences in adult flies |
| title_full | Thermal stress exposure of pupal oriental fruit fly has strong and trait-specific consequences in adult flies |
| title_fullStr | Thermal stress exposure of pupal oriental fruit fly has strong and trait-specific consequences in adult flies |
| title_full_unstemmed | Thermal stress exposure of pupal oriental fruit fly has strong and trait-specific consequences in adult flies |
| title_short | Thermal stress exposure of pupal oriental fruit fly has strong and trait-specific consequences in adult flies |
| title_sort | thermal stress exposure of pupal oriental fruit fly has strong and trait-specific consequences in adult flies |
| topic | Bactrocera dorsalis Climate change Heat hardening Invasive species Longevity Mild heat exposure Thermal tolerance |
| url | https://cris.library.msu.ac.zw//handle/11408/5284 https://doi.org/10.1111/phen.12400 |
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