R Dudley

Summary

Affiliation: University of Texas
Country: USA

Publications

  1. ncbi request reprint Atmospheric oxygen, giant Paleozoic insects and the evolution of aerial locomotor performance
    R Dudley
    Department of Zoology, University of Texas, Austin, TX 78712, USA
    J Exp Biol 201:1043-50. 1998
  2. ncbi request reprint The evolutionary physiology of animal flight: paleobiological and present perspectives
    R Dudley
    Section of Integrative Biology, University of Texas, Austin 78712, USA
    Annu Rev Physiol 62:135-55. 2000
  3. ncbi request reprint Limits to human locomotor performance: phylogenetic origins and comparative perspectives
    R Dudley
    Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712 1064, USA
    J Exp Biol 204:3235-40. 2001
  4. ncbi request reprint Fermenting fruit and the historical ecology of ethanol ingestion: is alcoholism in modern humans an evolutionary hangover?
    Robert Dudley
    Section of Integrative Biology, University of Texas at Austin, 78712, USA
    Addiction 97:381-8. 2002
  5. ncbi request reprint Hovering flight mechanics of neotropical flower bats (Phyllostomidae: Glossophaginae) in normodense and hypodense gas mixtures
    Robert Dudley
    Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA
    J Exp Biol 205:3669-77. 2002
  6. ncbi request reprint Limits to flight energetics of hummingbirds hovering in hypodense and hypoxic gas mixtures
    P Chai
    Department of Zoology, University of Texas, Austin 78712, USA
    J Exp Biol 199:2285-95. 1996
  7. ncbi request reprint Hummingbird hovering performance in hyperoxic heliox: effects of body mass and sex
    P Chai
    Department of Zoology, University of Texas, Austin 78712, USA
    J Exp Biol 199:2745-55. 1996
  8. ncbi request reprint Kinematics of hovering hummingbird flight along simulated and natural elevational gradients
    Douglas L Altshuler
    Section of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA
    J Exp Biol 206:3139-47. 2003
  9. ncbi request reprint Transient hovering performance of hummingbirds under conditions of maximal loading
    P Chai
    Department of Zoology, University of Texas, Austin 78712, USA
    J Exp Biol 200:921-9. 1997
  10. ncbi request reprint The ecological and evolutionary interface of hummingbird flight physiology
    Douglas L Altshuler
    Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA
    J Exp Biol 205:2325-36. 2002

Detail Information

Publications18

  1. ncbi request reprint Atmospheric oxygen, giant Paleozoic insects and the evolution of aerial locomotor performance
    R Dudley
    Department of Zoology, University of Texas, Austin, TX 78712, USA
    J Exp Biol 201:1043-50. 1998
    ..Such manipulations permit both paleophysiological simulation of ancestral locomotor performance and an analysis of maximal flight capacity in extant forms...
  2. ncbi request reprint The evolutionary physiology of animal flight: paleobiological and present perspectives
    R Dudley
    Section of Integrative Biology, University of Texas, Austin 78712, USA
    Annu Rev Physiol 62:135-55. 2000
    ..Elevated oxygen levels in the mid- to late Mesozoic would, however, have facilitated aerodynamic force production and enhanced muscle power output for ancestral birds, as well as for precursors to bats and pterosaurs...
  3. ncbi request reprint Limits to human locomotor performance: phylogenetic origins and comparative perspectives
    R Dudley
    Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712 1064, USA
    J Exp Biol 204:3235-40. 2001
    ..Upregulation of aerobic capacity and parallel resistance to hypoxia may represent coupled evolutionary adaptations to flight under high-altitude conditions...
  4. ncbi request reprint Fermenting fruit and the historical ecology of ethanol ingestion: is alcoholism in modern humans an evolutionary hangover?
    Robert Dudley
    Section of Integrative Biology, University of Texas at Austin, 78712, USA
    Addiction 97:381-8. 2002
    ..Epidemiologically demonstrated health benefits of low-level alcohol consumption are consistent with an ancient and potentially adaptive exposure of primate frugivores to this most common of the psychoactive substances...
  5. ncbi request reprint Hovering flight mechanics of neotropical flower bats (Phyllostomidae: Glossophaginae) in normodense and hypodense gas mixtures
    Robert Dudley
    Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA
    J Exp Biol 205:3669-77. 2002
    ..Revised energetic estimates suggest that mechanical power expenditure of hovering glossophagines is comparable with that in slow forward flight...
  6. ncbi request reprint Limits to flight energetics of hummingbirds hovering in hypodense and hypoxic gas mixtures
    P Chai
    Department of Zoology, University of Texas, Austin 78712, USA
    J Exp Biol 199:2285-95. 1996
    ..Depending on the physical context, hummingbird flight performance can therefore be limited by oxygen availability or by flight aerodynamics...
  7. ncbi request reprint Hummingbird hovering performance in hyperoxic heliox: effects of body mass and sex
    P Chai
    Department of Zoology, University of Texas, Austin 78712, USA
    J Exp Biol 199:2745-55. 1996
    ..Sexual dimorphism in flight adaptation also played a role, with males showing more limited hovering capacities, presumably as a trade-off for increased maneuverability...
  8. ncbi request reprint Kinematics of hovering hummingbird flight along simulated and natural elevational gradients
    Douglas L Altshuler
    Section of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA
    J Exp Biol 206:3139-47. 2003
    ..By contrast, increases in wingbeat frequency impose substantial metabolic demands, are only elicited transiently and anaerobically, and cannot be used to generate additional sustained lift at high elevations...
  9. ncbi request reprint Transient hovering performance of hummingbirds under conditions of maximal loading
    P Chai
    Department of Zoology, University of Texas, Austin 78712, USA
    J Exp Biol 200:921-9. 1997
    ..More generally, the study of performance limits in flying animals necessitates careful specification of behavioral context as well as quantitative determination of wing and body kinematics...
  10. ncbi request reprint The ecological and evolutionary interface of hummingbird flight physiology
    Douglas L Altshuler
    Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA
    J Exp Biol 205:2325-36. 2002
    ....
  11. pmc Resolution of a paradox: hummingbird flight at high elevation does not come without a cost
    Douglas L Altshuler
    Section of Integrative Biology, University of Texas, Austin, TX 78712, USA
    Proc Natl Acad Sci U S A 101:17731-6. 2004
    ..In contrast to hovering, excess power availability decreased substantially across elevations, thereby reducing the biomechanical potential for more complex flight such as competitive and escape maneuvers...
  12. ncbi request reprint Ethanol and methanol as possible odor cues for Egyptian fruit bats (Rousettus aegyptiacus)
    Francisco Sanchez
    Mitrani Department of Desert Ecology, Jacob Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Midreshet Ben Gurion, Israel
    J Chem Ecol 32:1289-300. 2006
    ..Thus, ethanol at high concentrations may serve as a signal for bats to avoid overripe, unpalatable fruit...
  13. ncbi request reprint The influence of ethanol on feeding in the frugivorous yellow-vented bulbul (Pycnonotus xanthopygos)
    Shunit Mazeh
    Mitrani Department of Desert Ecology, Jacob Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, 84990 Midreshet Ben Gurion, Israel
    Behav Processes 77:369-75. 2008
    ..0%). We suggest that decreasing food intake when food ethanol concentration is relatively high may be a means of avoiding intoxication and is related to the ethanol-metabolizing ability of the bird...
  14. ncbi request reprint Allometry of kinematics and energetics in carpenter bees (Xylocopa varipuncta) hovering in variable-density gases
    Stephen P Roberts
    Department of Biological Sciences, University of Nevada, Las Vegas, 4505 S Maryland Parkway, Las Vegas, NV 89154 4004, USA
    J Exp Biol 207:993-1004. 2004
    ..Larger bees operate near the envelope of maximal performance even in normodense hovering due to smaller body mass-specific flight muscles and limited reserve capacities for kinematics and power production...
  15. ncbi request reprint Allometry of maximum vertical force production during hovering flight of neotropical orchid bees (Apidae: Euglossini)
    Michael E Dillon
    Department of Biology, University of Washington, Seattle, WA 98195, USA
    J Exp Biol 207:417-25. 2004
    ..These findings suggest an adverse scaling of vertical force production at greater body mass even if flight muscle mass scales isometrically...
  16. ncbi request reprint The cost of living large: comparative gliding performance in flying lizards (Agamidae: Draco)
    Jimmy A McGuire
    Museum of Vertebrate Zoology, University of California, Berkeley, California 94720, USA
    Am Nat 166:93-106. 2005
    ..Such size-dependent variation in performance has important consequences for the ecology and evolution of flying lizards and other glissant taxa...
  17. ncbi request reprint Aquatic wing flapping at low Reynolds numbers: swimming kinematics of the Antarctic pteropod, Clione antarctica
    Brendan J Borrell
    Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
    J Exp Biol 208:2939-49. 2005
    ..These results indicate that, in addition to serotonin-mediated modulation of wingbeat frequency reported previously in Clione, geometric alteration of wingbeat kinematics offers a precise means of controlling swimming forces...
  18. ncbi request reprint Directed aerial descent in canopy ants
    Stephen P Yanoviak
    University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555, USA
    Nature 433:624-6. 2005
    ..This is the first study to document the mechanics and ecological relevance of this form of locomotion in the Earth's most diverse lineage, the insects...