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Trends Ecol Evol. 1997 Nov;12(11):433-6.

Reducing bias in the measurement of selection.

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Dept of Ecology and Evolution, University of Chicago, Chicago, IL 60637, USA.


Selection on quantitative characters is commonly mesured in natural populations using regression techniques based on phenotypic covariances between traits and fitness. However, such methods do not give an accutate view of the causal relationship between the phenotype and fitness if enviornmental factors also contribute to covariances between traits and fitness. A recently developed method for estimating selection eliminates the problem of bias resulting from enviormental covariances. This underappreciated method represents a significant addition to the toolbox of evolutionary ecologist.

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