globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2008253117
论文题名:
A release from developmental bias accelerates morphological diversification in butterfly eyespots
作者: Brattström O.; Aduse-Poku K.; van Bergen E.; French V.; Brakefield P.M.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:44
起始页码: 27474
结束页码: 27480
语种: 英语
英文关键词: Developmental bias ; Developmental biology ; Evolutionary biology
Scopus关键词: article ; butterfly ; development ; developmental biology ; nonhuman ; wing
英文摘要: Development can bias the independent evolution of traits sharing ontogenetic pathways, making certain evolutionary changes less likely. The eyespots commonly found on butterfly wings each have concentric rings of differing colors, and these serially repeated pattern elements have been a focus for evo–devo research. In the butterfly family Nymphalidae, eyespots have been shown to function in startling or deflecting predators and to be involved in sexual selection. Previous work on a model species of Mycalesina butterfly, Bicyclus anynana, has provided insights into the developmental control of the size and color composition of individual eyespots. Experimental evolution has also shown that the relative size of a pair of eyespots on the same wing surface is highly flexible, whereas they are resistant to diverging in color composition, presumably due to the underlying shared developmental process. This fixed color composition has been considered as a prime example of developmental bias with significant consequences for wing pattern evolution. Here, we test this proposal by surveying eyespots across the whole subtribe of Mycalesina butterflies and demonstrate that developmental bias shapes evolutionary diversification except in the genus Heteropsis which has gained independent control of eyespot color composition. Experimental manipulations of pupal wings reveal that the bias has been released through a novel regional response of the wing tissue to a conserved patterning signal. Our study demonstrates that development can bias the evolutionary independence of traits, but it also shows how bias can be released through developmental innovations, thus, allowing rapid morphological change, facilitating evolutionary diversification. © 2020 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163971
Appears in Collections:气候变化与战略

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作者单位: Brattström, O., Department of Zoology, University of Cambridge, Cambridge, CB2 3EJ, United Kingdom, African Butterfly Research Institute (ABRI), Nairobi, 0800, Kenya; Aduse-Poku, K., Department of Zoology, University of Cambridge, Cambridge, CB2 3EJ, United Kingdom; van Bergen, E., Department of Zoology, University of Cambridge, Cambridge, CB2 3EJ, United Kingdom; French, V., Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, EH9 3JT, United Kingdom; Brakefield, P.M., Department of Zoology, University of Cambridge, Cambridge, CB2 3EJ, United Kingdom, Cambridge University Museum of Zoology, Cambridge, CB2 3EJ, United Kingdom

Recommended Citation:
Brattström O.,Aduse-Poku K.,van Bergen E.,et al. A release from developmental bias accelerates morphological diversification in butterfly eyespots[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(44)
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