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

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dc.contributor.author Tokita, Masayoshi en
dc.contributor.author Yano, Wataru en
dc.contributor.author James, Helen F. en
dc.contributor.author Abzhanov, Arhat en
dc.date.accessioned 2017-02-14T20:55:57Z
dc.date.available 2017-02-14T20:55:57Z
dc.date.issued 2017
dc.identifier.citation Tokita, Masayoshi, Yano, Wataru, James, Helen F., and Abzhanov, Arhat. 2017. "Cranial shape evolution in adaptive radiations of birds: comparative morphometrics of Darwin&#39;s finches and Hawaiian honeycreepers." <em>Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences</em>. 372 (1713):<a href="https://doi.org/10.1098/rstb.2015.0481">https://doi.org/10.1098/rstb.2015.0481</a> en
dc.identifier.issn 0962-8436
dc.identifier.uri https://hdl.handle.net/10088/30649
dc.description.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&#39;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 (mCT) scanning of dried cranial skeletons. We show that cranial shapes in both Hawaiian honeycreepers and Coerebinae (Darwin&#39;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 radiation on oceanic islands. These findings help to better understand the nature of adaptive radiations in general and provide a foundation for future investigations on the developmental and molecular mechanisms underlying diversification of these morphologically distinguished groups of birds. This article is part of the themed issue &#39;Evo-devo in the genomics era, and the origins of morphological diversity&#39;. en
dc.relation.ispartof Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences en
dc.title Cranial shape evolution in adaptive radiations of birds: comparative morphometrics of Darwin&#39;s finches and Hawaiian honeycreepers en
dc.type Journal Article en
dc.identifier.srbnumber 141412
dc.identifier.doi 10.1098/rstb.2015.0481
rft.jtitle Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
rft.volume 372
rft.issue 1713
dc.description.SIUnit Peer-reviewed en
dc.description.SIUnit NMNH en
dc.description.SIUnit NH-Vertebrate Zoology en


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