More oxygen during development enhanced flight performance but not thermal tolerance of Drosophila melanogaster
| Autor: | Michael J. Angilletta, Shayan Shiehzadegan, Jacqueline Le Vinh Thuy, Natalia Szabla, John M. VandenBrooks |
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| Rok vydání: | 2017 |
| Předmět: |
Male
0106 biological sciences 0301 basic medicine Hot Temperature Pulmonology Physiology lcsh:Medicine Pathology and Laboratory Medicine 01 natural sciences Oxygen Body Temperature Extreme heat Medicine and Health Sciences lcsh:Science Hypoxia Hyperoxia Sex Characteristics Oxygen supply Multidisciplinary biology Chemistry Physics Drosophila Melanogaster Chemical oxygen demand Classical Mechanics Hypoxia (environmental) Animal Models Insects Physiological Parameters Experimental Organism Systems Physical Sciences Models Animal Mechanical Stress Drosophila Female medicine.symptom Drosophila melanogaster Flight (Biology) Research Article Chemical Elements Thermotolerance Arthropoda chemistry.chemical_element Motor Activity Research and Analysis Methods 010603 evolutionary biology 03 medical and health sciences Signs and Symptoms Model Organisms Animal science Diagnostic Medicine Medical Hypoxia medicine Animals hypoxia Biological Locomotion lcsh:R fungi Organisms Biology and Life Sciences Aquatic animal biology.organism_classification Invertebrates thermal stress Thermal Stresses 030104 developmental biology Flight Animal hyperoxia lcsh:Q Insect Flight |
| Zdroj: | PLoS ONE PLoS ONE, Vol 12, Iss 5, p e0177827 (2017) |
| ISSN: | 1932-6203 |
| Popis: | High temperatures can stress animals by raising the oxygen demand above the oxygen supply. Consequently, animals under hypoxia could be more sensitive to heating than those exposed to normoxia. Although support for this model has been limited to aquatic animals, oxygen supply might limit the heat tolerance of terrestrial animals during energetically demanding activities. We evaluated this model by studying the flight performance and heat tolerance of flies (Drosophila melanogaster) acclimated and tested at different concentrations of oxygen (12%, 21%, and 31%). We expected that flies raised at hypoxia would develop into adults that were more likely to fly under hypoxia than would flies raised at normoxia or hyperoxia. We also expected flies to benefit from greater oxygen supply during testing. These effects should have been most pronounced at high temperatures, which impair locomotor performance. Contrary to our expectations, we found little evidence that flies raised at hypoxia flew better when tested at hypoxia or tolerated extreme heat better than did flies raised at normoxia or hyperoxia. Instead, flies raised at higher oxygen levels performed better at all body temperatures and oxygen concentrations. Moreover, oxygen supply during testing had the greatest effect on flight performance at low temperature, rather than high temperature. Our results poorly support the hypothesis that oxygen supply limits performance at high temperatures, but do support the idea that hyperoxia during development improves performance of flies later in life. |
| Databáze: | OpenAIRE |
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