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Biology Faculty & Staff Publications

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Fish

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The Bertalanffy Growth Equation: Theory Of Paulys Auximetric Plots, Eric L. Charnov Jul 2007

The Bertalanffy Growth Equation: Theory Of Paulys Auximetric Plots, Eric L. Charnov

Biology Faculty & Staff Publications

No abstract provided.


Size And Temperature In The Evolution Of Fish Life Histories, Eric Charnov, James Gillooly Jan 2004

Size And Temperature In The Evolution Of Fish Life Histories, Eric Charnov, James Gillooly

Biology Faculty & Staff Publications

Body size and temperature are the two most important variables affecting nearly all biological rates and times, especially individual growth or production rates. By favoring an optimal maturation age and reproductive allocation, natural selection links individual growth to the mortality schedule. A recent model for evolution of life histories for species with indeterminate growth, which includes most fish, successfully predicts the numeric values of two key dimensionless numbers and the allometry of the average reproductive allocation versus maturation size across species. Here we use this new model to predict the relationships of age-at-maturity, adult mortality and reproductive effort to environmental …


Reproductive Constraints And The Evolution Of Life Histories With Indeterminate Growth, Eric Charnov, Thomas Turner, Kirk Winemiller Jul 2001

Reproductive Constraints And The Evolution Of Life Histories With Indeterminate Growth, Eric Charnov, Thomas Turner, Kirk Winemiller

Biology Faculty & Staff Publications

This article develops a new evolutionary model for life histories by combining a new production-growth model with some general, yet specific, constraints on reproductive allocation, and by allowing natural selection to adjust the age of first breeding and the metabolic/productive capacity of cells. The optimal life histories correctly predict the numeric value of dimensionless numbers that combine maturation age (size), mortality, and reproductive allocation. The life-history prediction also yields a new lifetime growth model for body mass under indeterminate growth and predicts that the fastest growth rate will be near the size at first reproduction. Table 1 is a glossary …