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Genome-wide analyses reveal drivers of penguin diversification

Citation

Vianna, JA and Fernandes, FAN and Frugone, MJ and Figueiro, HV and Pertierra, LR and Noll, D and Bi, K and Wang-Claypool, CY and Lowther, A and Parker, P and Le Bohec, C and Bonadonna, F and Wienecke, B and Pistorius, P and Steinfurth, A and Burridge, CP and Dantas, GPM and Poulin, E and Simison, WB and Henderson, J and Eizirik, E and Nery, MF and Bowie, RCK, Genome-wide analyses reveal drivers of penguin diversification, Proceedings of the National Academy of Sciences of the United States of America, 117, (36) pp. 22303-22310. ISSN 0027-8424 (2020) [Refereed Article]

DOI: doi:10.1073/pnas.2006659117

Abstract

Penguins have long been of interest to scientists and the general public, but their evolutionary history remains unresolved. Using genomes, we investigated the drivers of penguin diversification. We found that crown-group penguins diverged in the early Miocene in Australia/New Zealand and identified Aptenodytes (emperor and king penguins) as the sister group to all other extant penguins. Penguins first occupied temperate environments and then radiated to cold Antarctic waters. The Antarctic Circumpolar Current’s (ACC) intensification 11.6 Mya promoted penguin diversification and geographic expansion. We detected interspecies introgression among penguins, in some cases following the direction of the ACC, and identified genes acting on thermoregulation, oxygen metabolism, and diving capacity that underwent adaptive evolution as they progressively occupied more challenging thermal niches.

Item Details

Item Type:Refereed Article
Keywords:Antarctica, penguin, genome, ancestral niche, ancestral distribution
Research Division:Biological Sciences
Research Group:Evolutionary biology
Research Field:Phylogeny and comparative analysis
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the biological sciences
UTAS Author:Burridge, CP (Associate Professor Christopher Burridge)
ID Code:148825
Year Published:2020
Web of Science® Times Cited:20
Deposited By:Zoology
Deposited On:2022-02-14
Last Modified:2022-02-15
Downloads:0

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