The Evolution of Range Sizes in Mammals and Squamates: Heritability and Differential Evolutionary Rates for Low- and High-Latitude Limits

The Evolution of Range Sizes in Mammals and Squamates: Heritability and Differential Evolutionary... Species geographical ranges are at the core of many areas in evolutionary biology, yet empirical studies on the evolution of geographical ranges have been limited. Here, we integrate information on the phylogenetic relationships and geographical distribution of 3097 species of mammal (Artiodactyla, Carnivora, Chiroptera, Marsupialia, and Primates) and squamate (Anguimorpha, Gekkota, Iguania, Lacertoidea, Scincoidea, and Serpentes) to assess the degree of evolutionary “heritability” (i.e., phylogenetic autocorrelation) in range sizes and the extent to which range limits at higher and lower latitudes share similar evolutionary rates. Phylogenetic autocorrelation was highly variable among clades in the case of range size, but invariably high for range latitudinal centroid and range limits. Moreover, rates of evolution of high-latitude limits were 1.6–4 times faster than low-latitude limits. These results are consistent with previous experimental studies showing that heat tolerance is conserved across lineages, whereas tolerance to cold temperatures is more labile. The distinct evolutionary rates of low- and high-latitude limits has important implications for our understanding of the evolution of geographical ranges, as well as to understand how they could be affected by predicted anthropogenic climate changes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Evolutionary Biology Springer Journals

The Evolution of Range Sizes in Mammals and Squamates: Heritability and Differential Evolutionary Rates for Low- and High-Latitude Limits

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media New York
Subject
Life Sciences; Evolutionary Biology; Ecology; Developmental Biology; Human Genetics; Animal Genetics and Genomics
ISSN
0071-3260
eISSN
1934-2845
D.O.I.
10.1007/s11692-017-9412-0
Publisher site
See Article on Publisher Site

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