Stevan J. Arnold
Stevan J. Arnold
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Stevan J. Arnold

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Stevan J. Arnold

Stevan James Arnold (born 11 October 1944) is an American evolutionary biologist. He is Professor Emeritus of Integrative Biology and was Curator of Amphibians and Reptiles at Oregon State University, Corvallis until his retirement. He has served as president of the Society for the Study of Evolution and the American Society of Naturalists.

Arnold was elected a fellow of the Animal Behavior Society in 1992 and a fellow of the American Academy of Arts and Sciences in 2009. He has published over 150 peer-reviewed articles.

Arnold was born in Baltimore, Maryland, on 11 October 1944, and grew up in southern California. He enrolled at the University of California, Berkeley in 1962, declared a major in Zoology and immediately began working in the herpetology laboratory at the Museum of Vertebrate Zoology, under the supervision of Robert Stebbins. Graduating from Berkeley in 1966, he took the Organization for Tropical Studies ecology course that summer and began graduate school in zoology at the University of Michigan in the fall. He studied the evolution of courtship behavior in salamanders for his doctoral dissertation, supervised by Arnold Kluge.

In 1971, he moved back to Berkeley to begin a Miller Postdoctoral Fellowship with David Wake, launching a new research program on the behavioral ecology of garter snakes.

He is the brother of former baseball player Christopher Arnold.

Arnold joined the faculty of the University of California, Santa Barbara in 1973. A year later he moved to the University of Chicago, where he was a faculty member for the next 23 years. During this period, he was especially influenced by his colleagues Michael Wade and Russell Lande as his interests moved in the direction of evolutionary quantitative genetics. Those interests continued to develop after he moved to Oregon State University in 1997 as chair of the Department of Zoology. That administrative work ended in 2002, and he became curator of the amphibians and reptiles in the Oregon State Natural History Collections.

Arnold served as the President of Society for the Study of Evolution in 1998, and of the American Society of Naturalists in 2012. He has been the Co-chair of OSU research collections since 1997, where he oversees and supervises research collections at OSU.

Arnold was an Associate Editor of Evolution from 1981 to 1983 and of Theoretical Population Biology from 1988 to 1991. From 2004 to 2009, he was the Director of Oregon State Arthropod Collection.

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