Acclimation temperature affects thermal reaction norms for energy reserves in Drosophila
Autor: | Thirnahalli Nagaraj Girish, Martina Gáliková, Peter Klepsatel |
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Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
0301 basic medicine Slovakia Science Ecophysiology Acclimatization Energy reserves Population India 010603 evolutionary biology 01 natural sciences Article 03 medical and health sciences chemistry.chemical_compound Animal science Temperate climate Animals education Drosophila education.field_of_study Multidisciplinary biology Glycogen Temperature biology.organism_classification 030104 developmental biology chemistry Medicine Thermal reaction Fat metabolism Energy Metabolism Food scarcity |
Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020) |
ISSN: | 2045-2322 |
Popis: | Organisms have evolved various physiological mechanisms to cope with unfavourable environmental conditions. The ability to tolerate non-optimal thermal conditions can be substantially improved by acclimation. In this study, we examined how an early-life acclimation to different temperatures (19 °C, 25 °C and 29 °C) influences thermal reaction norms for energy stores in Drosophila adults. Our results show that acclimation temperature has a significant effect on the amount of stored fat and glycogen (and their relative changes) and the optimal temperature for their accumulation. Individuals acclimated to 19 °C had, on average, more energy reserves than flies that were initially maintained at 25 °C or 29 °C. In addition, acclimation caused a shift in optimal temperature for energy stores towards acclimation temperature. We also detected significant population differences in this response. The effect of acclimation on the optimal temperature for energy stores was more pronounced in flies from the temperate climate zone (Slovakia) than in individuals from the tropical zone (India). Overall, we found that the acclimation effect was stronger after acclimation to low (19 °C) than to high (29 °C) temperature. The observed sensitivity of thermal reaction norms for energy reserves to acclimation temperature can have important consequences for surviving periods of food scarcity, especially at suboptimal temperatures. |
Databáze: | OpenAIRE |
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