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Nonadaptive radiation in damselflies

Wellenreuther, Maren LU and Sanchez Guillen, Rosa LU (2016) In Evolutionary Applications 9(1). p.103-118
Abstract
Adaptive radiations have long served as living libraries to study the build-up of species richness; however, they do not provide good models for radiations that exhibit negligible adaptive disparity. Here, we review work on damselflies to argue that nonadaptive mechanisms were predominant in the radiation of this group and have driven species divergence through sexual selection arising from male-female mating interactions. Three damselfly genera (Calopteryx, Enallagma and Ischnura) are highlighted and the extent of (i) adaptive ecological divergence in niche use and (ii) nonadaptive differentiation in characters associated with reproduction (e.g. sexual morphology and behaviours) was evaluated. We demonstrate that species diversification... (More)
Adaptive radiations have long served as living libraries to study the build-up of species richness; however, they do not provide good models for radiations that exhibit negligible adaptive disparity. Here, we review work on damselflies to argue that nonadaptive mechanisms were predominant in the radiation of this group and have driven species divergence through sexual selection arising from male-female mating interactions. Three damselfly genera (Calopteryx, Enallagma and Ischnura) are highlighted and the extent of (i) adaptive ecological divergence in niche use and (ii) nonadaptive differentiation in characters associated with reproduction (e.g. sexual morphology and behaviours) was evaluated. We demonstrate that species diversification in the genus Calopteryx is caused by nonadaptive divergence in coloration and behaviour affecting premating isolation, and structural differentiation in reproductive morphology affecting postmating isolation. Similarly, the vast majority of diversification events in the sister genera Enallagma and Ischnura are entirely driven by differentiation in genital structures used in species recognition. The finding that closely related species can show negligible ecological differences yet are completely reproductively isolated suggests that the evolution of reproductive isolation can be uncoupled from niche-based divergent natural selection, challenging traditional niche models of species coexistence. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
adaptive radiation, damselflies, diversification, mechanical isolation, neutral theory, nonadaptive radiation, odonates, sexual selection
in
Evolutionary Applications
volume
9
issue
1
pages
103 - 118
publisher
Wiley-Blackwell
external identifiers
  • wos:000368250500007
  • scopus:84954439146
ISSN
1752-4571
DOI
10.1111/eva.12269
project
Colour genes in dragonflies
language
English
LU publication?
yes
id
fab8e795-abe0-46fa-ae2b-f025c82bbdff (old id 8747967)
date added to LUP
2016-02-23 09:54:42
date last changed
2017-10-22 04:07:07
@article{fab8e795-abe0-46fa-ae2b-f025c82bbdff,
  abstract     = {Adaptive radiations have long served as living libraries to study the build-up of species richness; however, they do not provide good models for radiations that exhibit negligible adaptive disparity. Here, we review work on damselflies to argue that nonadaptive mechanisms were predominant in the radiation of this group and have driven species divergence through sexual selection arising from male-female mating interactions. Three damselfly genera (Calopteryx, Enallagma and Ischnura) are highlighted and the extent of (i) adaptive ecological divergence in niche use and (ii) nonadaptive differentiation in characters associated with reproduction (e.g. sexual morphology and behaviours) was evaluated. We demonstrate that species diversification in the genus Calopteryx is caused by nonadaptive divergence in coloration and behaviour affecting premating isolation, and structural differentiation in reproductive morphology affecting postmating isolation. Similarly, the vast majority of diversification events in the sister genera Enallagma and Ischnura are entirely driven by differentiation in genital structures used in species recognition. The finding that closely related species can show negligible ecological differences yet are completely reproductively isolated suggests that the evolution of reproductive isolation can be uncoupled from niche-based divergent natural selection, challenging traditional niche models of species coexistence.},
  author       = {Wellenreuther, Maren and Sanchez Guillen, Rosa},
  issn         = {1752-4571},
  keyword      = {adaptive radiation,damselflies,diversification,mechanical isolation,neutral theory,nonadaptive radiation,odonates,sexual selection},
  language     = {eng},
  number       = {1},
  pages        = {103--118},
  publisher    = {Wiley-Blackwell},
  series       = {Evolutionary Applications},
  title        = {Nonadaptive radiation in damselflies},
  url          = {http://dx.doi.org/10.1111/eva.12269},
  volume       = {9},
  year         = {2016},
}