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Cited by 468

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Kinetic effects of temperature on rates of genetic divergence and speciation

Open access
Allen, Andrew P., Gillooly, James F., Savage, Van M., Brown, James H.·2006·Proceedings of the National Academy of Sciences

Abstract

Latitudinal gradients of biodiversity and macroevolutionary dynamics are prominent yet poorly understood. We derive a model that quantifies the role of kinetic energy in generating biodiversity. The model predicts that rates of genetic divergence and speciation are both governed by metabolic rate and therefore show the same exponential temperature dependence (activation energy of ≈0.65 eV; 1 eV = 1.602 × 10 −19 J). Predictions are supported by global datasets from planktonic foraminifera for rates of DNA evolution and speciation spanning 30 million years. As predicted by the model, rates of speciation increase toward the tropics even after controlling for the greater ocean coverage at tropical latitudes. Our model and results indicate that individual metabolic rate is a primary determinant of evolutionary rates: ≈10 13 J of energy flux per gram of tissue generates one substitution per nucleotide in the nuclear genome, and ≈10 23 J of energy flux per population generates a new species of foraminifera.

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Metadata

Authors
Allen, A. P., Gillooly, J. F., Savage, V. M., & Brown, J. H.
Venue
Proceedings of the National Academy of Sciences
Published
2006-06-13
Volume
103
Issue
24
Pages
9130-9135
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2131544152
Cited by
468
References
7
FWCI
20.20
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Kinetic effects of temperature on rates of genetic divergence and speciation. https://app.cochat.ai/papers/10.1073/pnas.0603587103
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Allen, A. P., Gillooly, J. F., Savage, V. M., & Brown, J. H. (2006). Kinetic effects of temperature on rates of genetic divergence and speciation. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0603587103

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