Douglas L Altshuler
Affiliation: California Institute of Technology
- Resolution of a paradox: hummingbird flight at high elevation does not come without a costDouglas 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...
- Ecology and evolution. Darwin's hummingbirdsDouglas L Altshuler
Department of Bioengineering, California Institute of Technology, Pasadena, CA 91104, USA
Science 300:588-9. 2003
- Kinematics of hovering hummingbird flight along simulated and natural elevational gradientsDouglas 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...
- Of hummingbirds and helicopters: hovering costs, competitive ability, and foraging strategiesDouglas L Altshuler
Section of Integrative Biology, University of Texas, Austin, Texas 78712, USA
Am Nat 163:16-25. 2004..However, the WDL-helicopter dynamics model has been instrumental in calling attention to the importance of comparative wing morphology and related aerodynamics for understanding the behavioral ecology of hummingbirds...
- Flight performance and competitive displacement of hummingbirds across elevational gradientsDouglas L Altshuler
Bioengineering, California Institute of Technology, Pasadena, California 91125, USA
Am Nat 167:216-29. 2006..A minimum value for burst power may be required for successful competition, but other maneuverability features gain importance when all competitors have sufficient muscle power, as occurs at low elevations...
- Short-amplitude high-frequency wing strokes determine the aerodynamics of honeybee flightDouglas L Altshuler
Bioengineering, California Institute of Technology, Pasadena, 91125, USA
Proc Natl Acad Sci U S A 102:18213-8. 2005..We suggest that the peculiar kinematics of bees may reflect either a specialization for increasing load capacity or a physiological limitation of their flight muscles...
- The ecological and evolutionary interface of hummingbird flight physiologyDouglas L Altshuler
Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA
J Exp Biol 205:2325-36. 2002....
- Take-off mechanics in hummingbirds (Trochilidae)Bret W Tobalske
Department of Biology, University of Portland, 5000 North Willamette Boulevard, Portland, OR 97203, USA
J Exp Biol 207:1345-52. 2004..Thus, hummingbirds are capable of modulating their leg and wingbeat kinetics to increase take-off velocity...
- Oxygen consumption rates in hovering hummingbirds reflect substrate-dependent differences in P/O ratios: carbohydrate as a 'premium fuel'Kenneth C Welch
Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA 93106 9610, USA
J Exp Biol 210:2146-53. 2007..The requirement for less oxygen when oxidizing carbohydrate suggests that carbohydrate oxidation may facilitate hovering flight in hummingbirds at high altitude...
- Phylogenetic systematics and biogeography of hummingbirds: Bayesian and maximum likelihood analyses of partitioned data and selection of an appropriate partitioning strategyJimmy A McGuire
Museum of Vertebrate Zoology, 3101 Valley Life Sciences Building, University of California, Berkeley, CA 94720 3160, USA
Syst Biol 56:837-56. 2007....
- Neuromuscular control of flightDOUGLAS ALTSHULER; Fiscal Year: 2005..Improved understanding of the neural control of the regulation of complex motor behaviors would have direct relevance to studies of human motor control diseases and motor control degeneration that accompanies ageing. ..