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Wing shape and environmental energy are associated with molecular evolutionary rates in a large avian radiation

View ORCID ProfileDavid Alejandro Duchêne, View ORCID ProfilePaola Montoya, View ORCID ProfileCarlos Daniel Cadena
doi: https://doi.org/10.1101/2020.01.16.908368
David Alejandro Duchêne
aResearch School of Biology, Australian National University, ACT 2601, Australia
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  • For correspondence: david.duchene@anu.edu.au
Paola Montoya
bDepartamento de Ciencias Biológicas, Universidad de los Andes, Apartado 4976, Bogotá, Colombia
cInstituto de Investigación de Recursos Biológicos Alexander von Humboldt, Bogotá, Colombia
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Carlos Daniel Cadena
bDepartamento de Ciencias Biológicas, Universidad de los Andes, Apartado 4976, Bogotá, Colombia
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  • ORCID record for Carlos Daniel Cadena
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Abstract

Among the macroevolutionary drivers of molecular evolutionary rates, metabolic demands and environmental energy have been a central topic of discussion. The large number of studies examining these associations have found mixed results, and have rarely explored the interactions among various factors impacting molecular evolutionary rates. Taking the diverse avian family Furnariidae as a case study, we examined the association between several estimates of molecular evolutionary rates with a proxy of metabolic demands imposed by flight (wing morphology) and proxies of environmental energy across the geographic ranges of species (temperature and UV radiation). We found a strong positive association between molecular rates in genomic regions that can change the coded amino-acid with wing morphology, environmental temperature, and UV radiation. Strikingly, however, we did not find evidence of such associations with molecular rates at sites not impacting amino-acids. Our results suggest that the demands of flight and environmental energy primarily impact genome evolution by placing selective constraints, instead of being associated with basal mutation rates.

Footnotes

  • Updated terminology in methods section.

  • https://github.com/duchene/furnariidae_rates

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted March 11, 2020.
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Wing shape and environmental energy are associated with molecular evolutionary rates in a large avian radiation
David Alejandro Duchêne, Paola Montoya, Carlos Daniel Cadena
bioRxiv 2020.01.16.908368; doi: https://doi.org/10.1101/2020.01.16.908368
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Wing shape and environmental energy are associated with molecular evolutionary rates in a large avian radiation
David Alejandro Duchêne, Paola Montoya, Carlos Daniel Cadena
bioRxiv 2020.01.16.908368; doi: https://doi.org/10.1101/2020.01.16.908368

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