SREL Reprint #0825




Rapid Evolution in a Post-Thermal Environment

Michael H. Smith, Michael W. Smith, Stephanie L. Scott , Edwin H. Liu and Jefferson C. Jones



In largemouth bass, there are two common forms of malate dehydrogenase-1 (MDH-1), which have different thermal characteristics.  A population of this species not only showed an increase in the gene frequency for the thermally stable form of MDH-1 in response to thermal effluents from a nuclear production reactor, but also evolved back within 10 years to the natural frequency characteristic for the area when the man-imposed stress was eliminated.  Such short-term evolutionary responses emphasize the temporally dynamic nature of the genetic characteristics of biological resources and have implications for their management.


SREL Reprint #0825

Smith, M.H., M.W. Smith, S.L. Scott, E.H. Liu, and J.C. Jones. 1983. Rapid evolution in a post thermal environment. Copeia 1983:193-197.

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