Population-specific patterns of longevity and thermal induced lifespan extension in Drosophila suzukii
Drosophila suzukii is an invasive pest that damages fruits of soft skin, provoking economic losses for commercial fruit producers. Understanding its biology is key for developing pest management strategies, with particular attention to life-history traits such as longevity and thermal tolerance....
| Autores principales: | , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2025
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/24778 https://www.sciencedirect.com/science/article/abs/pii/S030645652500186X https://doi.org/10.1016/j.jtherbio.2025.104229 |
| Sumario: | Drosophila suzukii is an invasive pest that damages fruits of soft skin, provoking economic losses for commercial
fruit producers. Understanding its biology is key for developing pest management strategies, with particular
attention to life-history traits such as longevity and thermal tolerance. While previous studies mainly analyzed
temperature effects on longevity, response to sub-lethal thermal treatments and its potential beneficial effects on
longevity have not been explored. We examined thermal induced changes in longevity and explored heat and
cold tolerance in two D. suzukii stocks derived from climatically different regions of Argentina. Longevity was
assessed at two constant temperatures (25 and 30
◦
C) and at 25
◦
C with either a heat or a cold-stress treatment.
Differences in mean longevity between populations were dependent on temperature regimen and thermal-stress
treatment, with differences being significant at 25
◦
C both with and without a heat-stress. A reduced longevity
was observed for flies of both stocks exposed at constant 30
◦
C. Longevity extension induced by heat was found in
f
lies from the temperate/subtropical region which were also the shortest-lived flies at 25
◦
C. No effects of the
cold-stress treatment on longevity were observed. Regarding thermal tolerance, flies from the cold region were
more heat-susceptible and recovered faster after cold-stress than flies from the temperate/subtropical region. Our
results evidence heat-induced lifespan extension in D. suzukii and suggest that this phenomenon could be an
important aspect of population phenotypic plasticity for this species. |
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