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Cranial shape evolution in adaptive radiations of birds: comparative morphometrics of Darwin's finches and Hawaiian honeycreepers

Published on Feb 5, 2017in Philosophical Transactions of the Royal Society B6.14
· DOI :10.1098/rstb.2015.0481
Masayoshi Tokita15
Estimated H-index: 15
(Harvard University),
Wataru Yano5
Estimated H-index: 5
(Asahi University)
+ 1 AuthorsArhat Abzhanov22
Estimated H-index: 22
(Harvard University)
Abstract
Adaptive radiation is the rapid evolution of morphologically and ecologically diverse species from a single ancestor. The two classic examples of adaptive radiation are Darwin's finches and the Hawaiian honeycreepers, which evolved remarkable levels of adaptive cranial morphological variation. To gain new insights into the nature of their diversification, we performed comparative three-dimensional geometric morphometric analyses based on X-ray microcomputed tomography (µCT) scanning of dried cranial skeletons. We show that cranial shapes in both Hawaiian honeycreepers and Coerebinae (Darwin's finches and their close relatives) are much more diverse than in their respective outgroups, but Hawaiian honeycreepers as a group display the highest diversity and disparity of all other bird groups studied. We also report a significant contribution of allometry to skull shape variation, and distinct patterns of evolutionary change in skull morphology in the two lineages of songbirds that underwent adaptive radiatio...
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References76
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#2Jesús Marugán-Lobón (UAM: Autonomous University of Madrid)H-Index: 16
Last.Emily J. Rayfield (UoB: University of Bristol)H-Index: 30
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#1Emma Sherratt (University of Manchester)H-Index: 13
#2David J. Gower (Natural History Museum)H-Index: 34
Last.Mark Wilkinson (Natural History Museum)H-Index: 45
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#1Heather L. Farrington (UC: University of Cincinnati)H-Index: 5
#2Lucinda P. Lawson (UC: University of Cincinnati)H-Index: 8
Last.Kenneth Petren (UC: University of Cincinnati)H-Index: 28
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#1Anjali Goswami (UCL: University College London)H-Index: 30
#2Akinobu Watanabe (New York Institute of Technology College of Osteopathic Medicine)H-Index: 5
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#1Monah Abou Alezz (National Research Council)
#2Ludovica Celli (National Research Council)
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#1L. Trallero (CSIC: Spanish National Research Council)
#2Marc Farré (CSIC: Spanish National Research Council)H-Index: 5
Last.Joan Navarro (CSIC: Spanish National Research Council)H-Index: 23
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#1Zachary S. Morris (Harvard University)H-Index: 9
#2Kent A. Vliet (UF: University of Florida)H-Index: 17
Last.Stephanie E. Pierce (Harvard University)H-Index: 4
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