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Ecologists say metabolism accounts for why natural selection favors only some species
Date:11/3/2008

g of living matter as a whole."

Unlike the genetic code and protein composition, metabolic rate cannot be inherited from a common ancestor. Rather, a particular range of metabolic rates is maintained by natural selection.

"Species had to invent diverse tricks to remain near the metabolic optimum, from which the progressive evolutionary increase in body size from prokaryotes to largest vertebrates and plants was continually taking them away," Li said.

He was joined in the study by co-leaders Anastassia M. Makarieva and Victor G. Gorshkov of the Russian Academy of Sciences, St. Petersburg. Their co-authors on the research paper are Steven L. Chown of Stellenbosch University, South Africa; Peter B. Reich of the University of Minnesota, St. Paul; and Valery M. Gavrilov of Moscow State University, Russia.


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Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6050
University of California - Riverside
Source:Eurekalert

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