Interactive Effects of Rearing Temperature and Oxygen on the Development of Drosophila melanogaster

摘要: Abstract Although higher temperatures strongly stimulate ectothermic metabolic rates, they only slightly increase oxygen diffusion rates and decrease solubility. Consequently, we predicted that insect gas exchange systems would have more difficulty meeting tissue demands at temperatures. In this study, Drosophila melanogaster were reared from egg to adult in hyperoxic (40%), hypoxic (10%), normoxic (21%) conditions ranging 15°–31.5°C examine the interactive effect of temperature on development. Hyperoxia generally increased mass growth rate rearing At lower temperatures, however, hyperoxia had a very small mass, did not affect rate, lengthened time eclosion. Relative normoxia, flies smaller (mass thorax length), longer eclosion times, slower reduced survival. cooler hypoxia relatively modest...