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Butterfly dichromatism primarily evolved via Darwin's, not Wallace's, model

van der Bijl, Wouter and Zeuss, Dirk and Chazot, Nicolas and Tunstrom, Kalle and Wahlberg, Niklas and Wiklund, Christer and Fitzpatrick, John L. and Wheat, Christopher W. (2020). Butterfly dichromatism primarily evolved via Darwin's, not Wallace's, model. Evolution letters. 4 , 545-555
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Abstract

Sexual dimorphism is typically thought to result from sexual selection for elaborated male traits, as proposed by Darwin. However, natural selection could reduce expression of elaborated traits in females, as proposed by Wallace. Darwin and Wallace debated the origins of dichromatism in birds and butterflies, and although evidence in birds is roughly equal, if not in favor of Wallace's model, butterflies lack a similar scale of study. Here, we present a large-scale comparative phylogenetic analysis of the evolution of butterfly coloration, using all European non-hesperiid butterfly species (n = 369). We modeled evolutionary changes in coloration for each species and sex along their phylogeny, thereby estimating the rate and direction of evolution in three-dimensional color space using a novel implementation of phylogenetic ridge regression. We show that male coloration evolved faster than female coloration, especially in strongly dichromatic clades, with male contribution to changes in dichromatism roughly twice that of females. These patterns are consistent with a classic Darwinian model of dichromatism via sexual selection on male coloration, suggesting this model was the dominant driver of dichromatism in European butterflies.

Authors/Creators:van der Bijl, Wouter and Zeuss, Dirk and Chazot, Nicolas and Tunstrom, Kalle and Wahlberg, Niklas and Wiklund, Christer and Fitzpatrick, John L. and Wheat, Christopher W.
Title:Butterfly dichromatism primarily evolved via Darwin's, not Wallace's, model
Series Name/Journal:Evolution letters
Year of publishing :2020
Volume:4
Page range:545-555
Number of Pages:11
Publisher:JOHN WILEY & SONS LTD
ISSN:2056-3744
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Evolutionary Biology
Keywords:Butterfly, color, comparative analysis, dichromatism, phylogenetic ridge regression, phylogeny, sex, sexual dimorphism
URN:NBN:urn:nbn:se:slu:epsilon-p-109308
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-109308
Additional ID:
Type of IDID
DOI10.1002/evl3.199
Web of Science (WoS)000586673400001
ID Code:19759
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:22 Dec 2020 19:03
Metadata Last Modified:15 Jan 2021 19:47

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