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Kimura’s Theory of Non-adaptive Radiation and Peto’s Paradox: A Missing Link?
Version 1
: Received: 18 July 2023 / Approved: 19 July 2023 / Online: 20 July 2023 (07:30:46 CEST)
Version 2 : Received: 28 July 2023 / Approved: 31 July 2023 / Online: 31 July 2023 (10:51:13 CEST)
Version 2 : Received: 28 July 2023 / Approved: 31 July 2023 / Online: 31 July 2023 (10:51:13 CEST)
A peer-reviewed article of this Preprint also exists.
Herrick, J. Kimura’s Theory of Non-Adaptive Radiation and Peto’s Paradox: A Missing Link? Biology 2023, 12, 1140. Herrick, J. Kimura’s Theory of Non-Adaptive Radiation and Peto’s Paradox: A Missing Link? Biology 2023, 12, 1140.
Abstract
A strong correlation between karyotype diversity and species richness in mammals was first reported over forty years ago: in mammalian phylogenetic clades, standard deviation of karyotype diversity (KD) closely corresponds to the standard deviation of species richness (SR). These initial studies, however, did not control for phylogenetic signal, raising the possibility that the correlation was due to phylogenetic relatedness among species in a clade. Accordingly, karyotype diversity trivially reflects species diversity simply as a passive consequence of adaptive radiations. A more recent study in mammals has controlled for phylogenetic signal and established the correlation as phylogenetically independent, suggesting that species diversity cannot, in itself, explain the observed corresponding karyotype diversity. The correlation is therefore remarkable because the mechanisms contributing to karyotype diversity are evolutionarily independent of the mechanisms contributing to species diversity. Recently, it was shown in salamanders that the two processes generating genetic diversity and species diversity are indeed independent and operate in parallel, suggesting a potential non-adaptive and non-causal relationship between the two fundamental variables involved in adaptive radiations. The following will examine the relationship between KD and SR in the context of Motoo Kimura’s theory of non-adaptive radiation.
Keywords
karyotype diversity; genome stability; species richness; species eveneness; non-adaptive radiation
Subject
Biology and Life Sciences, Ecology, Evolution, Behavior and Systematics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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