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Mammal body size ev...
Mammal body size evolution in North America and Europe over 20 Myr: similar trends generated by different processes
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Huang, S. (author)
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Eronen, J. T. (author)
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Janis, C. M. (author)
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Saarinen, J. J. (author)
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- Silvestro, Daniele (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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Fritz, S. A. (author)
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(creator_code:org_t)
- 2017-02-22
- 2017
- English.
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In: Proceedings of the Royal Society B - Biological Sciences. - : The Royal Society. - 0962-8452 .- 1471-2954. ; 284:1849
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https://doi.org/10.1...
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Abstract
Subject headings
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- Because body size interacts with many fundamental biological properties of a species, body size evolution can be an essential component of the generation and maintenance of biodiversity. Here we investigate how body size evolution can be linked to the clade-specific diversification dynamics in different geographical regions. We analyse an extensive body size dataset of Neogene large herbivores (covering approx. 50% of the 970 species in the orders Artiodactyla and Perissodactyla) in Europe and North America in a Bayesian framework. We reconstruct the temporal patterns of body size in each order on each continent independently, and find significant increases of minimum size in three of the continental assemblages (except European perissodactyls), suggesting an active selection for larger bodies. Assessment of trait-correlated birth-death models indicates that the common trend of body size increase is generated by different processes in different clades and regions. Larger-bodied artiodactyl species on both continents tend to have higher origination rates, and both clades in North America show strong links between large bodies and low extinction rate. Collectively, our results suggest a strong role of species selection and perhaps of higher-taxon sorting in driving body size evolution, and highlight the value of investigating evolutionary processes in a biogeographic context.
Subject headings
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Keyword
- species body mass
- diversification
- biogeography
- species selection
- Cope's rule
- higher-taxon sorting
- copes rule
- extinction rates
- climate-change
- fasting endurance
- fossil
- mammals
- maximum
- speciation
- dynamics
- scale
- big
- Life Sciences & Biomedicine - Other Topics
- Ecology
- Evolutionary Biology
Publication and Content Type
- ref (subject category)
- art (subject category)
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