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Allometry Of Kinematics And Energetics In Carpenter Bees (Xylocopa Varipuncta) Hovering In Variable-Density Gases, Stephen P. Roberts, Jon F. Harrison, Robert Dudley
Allometry Of Kinematics And Energetics In Carpenter Bees (Xylocopa Varipuncta) Hovering In Variable-Density Gases, Stephen P. Roberts, Jon F. Harrison, Robert Dudley
Biological Sciences Faculty Research & Creative Works
We Assessed the Energetic and Aerodynamic Limits of Hovering Flight in the Carpenter Bee Xylocopa Varipuncta. using Normoxic, Variable-Density Mixtures of O2, N2 and He, We Were Able to Elicit Maximal Hovering Performance and Aerodynamic Failure in the Majority of Bees Sampled. Bees Were Not Isometric Regarding Thorax Mass and Wing Area, Both of Which Were Disproportionately Lower in Heavier Individuals. the Minimal Gas Density Necessary for Hovering (MGD) Increased with Body Mass and Decreased with Relative Thoracic Muscle Mass. Only the Four Bees in Our Sample with the Highest Body Mass-Specific Thorax Masses Were Able to Hover in Pure …
Mechanisms Of Thermal Balance In Flying Centris Pallida (Hymenoptera: Anthophoridae), Stephen P. Roberts, Jon F. Harrison, Neil F. Hadley
Mechanisms Of Thermal Balance In Flying Centris Pallida (Hymenoptera: Anthophoridae), Stephen P. Roberts, Jon F. Harrison, Neil F. Hadley
Biological Sciences Faculty Research & Creative Works
Thermoregulation of the Thorax is Critical for Bees and Other Endothermic Insects to Achieve High Rates of Flight Muscle Power Production. However, the Mechanisms Allowing Insects to Regulate Thorax Temperatures during Flight Are Not Well Understood. to Test Whether Variations in Metabolic Heat Production, Evaporation or Heat Transfer from the Thorax to the Abdomen Contribute to the Maintenance of Stable Body Temperatures during Flight in the Bee Centris Pallida, We Measured CO2 Production, Water Vapor Loss, Wingbeat Frequency and Body Segment Temperatures during Flight at Varying Air Temperatures (T(A)). While Hovering in the Field and While Flying in the Respirometer, …