Physiological Adaptation in Laboratory Environments

Allen G. Gibbs and Eran Gefen

in Experimental Evolution

Published by University of California Press

Published in print March 2009 | ISBN: 9780520247666
Published online March 2012 | e-ISBN: 9780520944473 | DOI:
Physiological Adaptation in Laboratory Environments

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This chapter considers two categories of environmental variables that have been used as selective agents in laboratory natural-selection experiments. Temperature is the most important and common physical variable affecting the distribution and abundance of organisms in nature. The second category is resource variables—chemicals organisms need for survival and reproduction, energy sources and water being the most fundamental. The chapter presents studies of temperature stress in Drosophila, temperature selection in microbes, osmotic stress in aquatic environments, resource limitation in insects, nutritional selection in bacteria, and dessication selection in Drosophilia.

Keywords: natural selection; temperature; resource variables; energy sources; water; Drosophilia; microbes; osmotic stress; resource limitation; nutritional selection

Chapter.  11988 words.  Illustrated.

Subjects: Evolutionary Biology

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