Robert Dudley
University of California, Berkeley
26Publications
17H-index
1,773Citations
Publications 26
Newest
Published on Dec 12, 2014in Science 41.06
Xing Xu39
Estimated H-index: 39
(Chinese Academy of Sciences),
Robert Dudley17
Estimated H-index: 17
(University of California, Berkeley)
+ 4 AuthorsDavid J. Varricchio26
Estimated H-index: 26
(Montana State University)
Research on the origin and evolution of birds has gathered pace in recent years, aided by a continuous stream of new fossil finds as well as molecular phylogenies. Bird origins, in particular, are now better understood than those of mammals, for which the early fossil record is relatively poor compared with that of birds. Xu et al. review progress in tracing the origins of birds from theropod dinosaurs, focusing especially on recent fossil finds of feathered dinosaurs of northeastern China. They...
90 Citations Source Cite
Published on Jan 6, 2006in Integrative and Comparative Biology 2.75
Michael E. Dillon14
Estimated H-index: 14
,
Melanie Frazier14
Estimated H-index: 14
,
Robert Dudley17
Estimated H-index: 17
(Smithsonian Institution)
Synopsis Numerous physical parameters that influence insect physiology vary substantially with altitude, including temperature, air density, and oxygen partial pressure. Here, we review existing literature and present new empirical data to better characterize the high-altitude environment, and then consider how this environment affects the physiology and evolution of insects. Using weather balloon data from fifty-three sites across the globe, we estimate a mean altitudinal temperature lapse rate...
117 Citations Source Cite
Published on Feb 1, 2005in Nature 41.58
Stephen P. Yanoviak24
Estimated H-index: 24
(University of Texas Medical Branch),
Robert Dudley17
Estimated H-index: 17
(Smithsonian Tropical Research Institute),
Michael Kaspari38
Estimated H-index: 38
(Smithsonian Tropical Research Institute)
Numerous non-flying arboreal vertebrates use controlled descent (either parachuting or gliding sensu stricto 1,2 ) to avoid predation or to locate resources 3-7 , and directional control during a jump or fall is thought to be an important stage in the evolution of flight 3,8,9 . Here we show that workers of the neotropical ant Cephalotes atratus L. (Hymenoptera: Formicidae) use directed aerial descent to return to their home tree trunk with >80% success during a fall. Videotaped falls reveal tha...
85 Citations Source Cite
Published on Aug 1, 2004in Integrative and Comparative Biology 2.75
Robert Dudley17
Estimated H-index: 17
(Smithsonian Tropical Research Institute)
Abstract Ethanol is a naturally occurring substance resulting from the fermentation by yeast of fruit sugars. The association between yeasts and angiosperms dates to the Cretaceous, and dietary exposure of diverse frugivorous taxa to ethanol is similarly ancient. Ethanol plumes can potentially be used to localize ripe fruit, and consumption of low-concentration ethanol within fruit may act as a feeding stimulant. Ripe and over-ripe fruits of the Neotropical palm Astrocaryum standleyanum containe...
76 Citations Source Cite
Published on Jan 1, 2003in The Quarterly Review of Biology 2.32
Robert Dudley17
Estimated H-index: 17
Published on Apr 1, 2002in Addiction 6.05
Robert Dudley17
Estimated H-index: 17
(University of Texas at Austin)
In the field of addiction research, the possibility of ancestral exposure to psychoactive compounds has generally been excluded. A paleobiological approach to the human diet, however, illustrates the potential utility of historical data in interpreting modern-day addictive behaviors. Low-level dietary exposure to ethanol via ingestion of fermenting fruit has probably characterized the predominantly frugivorous anthropoid lineage for about 40 million years. Potentially adaptive primate behaviors ...
85 Citations Source Cite
Published on Jan 1, 2001in Science 41.06
Steven J. Brams35
Estimated H-index: 35
,
Robert Dudley17
Estimated H-index: 17
1 Citations
123