The metabolic cost of flight in unrestrained birds
| العنوان: | The metabolic cost of flight in unrestrained birds |
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| المؤلفون: | J. R. Torre-Bueno, J. Larochelle |
| المصدر: | Journal of Experimental Biology. 75:223-229 |
| بيانات النشر: | The Company of Biologists, 1978. |
| سنة النشر: | 1978 |
| مصطلحات موضوعية: | Physiology, Ecology, Carbon dioxide production, Carbon Dioxide, Aquatic Science, Atmospheric sciences, Metabolic cost, Birds, chemistry.chemical_compound, Oxygen Consumption, Amplitude, chemistry, Drag, Flight, Animal, Insect Science, Range (aeronautics), Carbon dioxide, Metabolic rate, Animals, Bird flight, Animal Science and Zoology, Energy Metabolism, Molecular Biology, Ecology, Evolution, Behavior and Systematics |
| الوصف: | Oxygen consumption and carbon dioxide production were measured during flight in unrestrained starlings by a new method. Mean RQ after the first 30 min of flight was 0.69 +/− 0.08 (+/− S.D.). Mean rate of carbon dioxide production was 19.7 +/− 2.2 ml CO2/min, which corresponds to a metabolic rate of 8.9 +/− 1 W. Metabolic rate during flight did not change significantly over a range of air speeds from 8 to 18 m/s and birds would not fly at speeds outside of this range. Current theories of bird flight predict a large change in metabolic rate over the same range of speeds. Wingbeat frequency was constant at 12 +/− 0.5 Hz. Wingbeat amplitude reached a minimum at a speed of 14 m/s and increased at both higher and lower speeds. Angle between the body and horizontal was least at high speeds and increased at low speeds. As existing theories do not take into account the change of drag resulting from changes in body attitude, this may be a cause of the discrepancies between theory and observation. |
| تدمد: | 1477-9145 0022-0949 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20db23750c13b21e4db8ed1640caedf5 https://doi.org/10.1242/jeb.75.1.223 |
| رقم الأكسشن: | edsair.doi.dedup.....20db23750c13b21e4db8ed1640caedf5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14779145 00220949 |
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