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Genetic divergence predicts reproductive isolation in damselflies

Sanchez Guillen, Rosa LU ; Cordoba-Aguilar, A.; Cordero-Rivera, A. and Wellenreuther, Maren LU (2014) In Journal of Evolutionary Biology 27(1). p.76-87
Abstract
Reproductive isolation is the defining characteristic of a biological species, and a common, but often untested prediction is a positive correlation between reproductive isolation and genetic divergence. Here, we test for this correlation in odonates, an order characterized by strong sexual selection. First, we measure reproductive isolation and genetic divergence in eight damselfly genera (30 species pairs) and test for a positive correlation. Second, we estimate the genetic threshold preventing hybrid formation and empirically test this threshold using wild populations of species within the Ischnura genus. Our results indicate a positive and strong correlation between reproductive isolation and genetic distance using both mitochondrial... (More)
Reproductive isolation is the defining characteristic of a biological species, and a common, but often untested prediction is a positive correlation between reproductive isolation and genetic divergence. Here, we test for this correlation in odonates, an order characterized by strong sexual selection. First, we measure reproductive isolation and genetic divergence in eight damselfly genera (30 species pairs) and test for a positive correlation. Second, we estimate the genetic threshold preventing hybrid formation and empirically test this threshold using wild populations of species within the Ischnura genus. Our results indicate a positive and strong correlation between reproductive isolation and genetic distance using both mitochondrial and nuclear genes cytochrome oxidase II (COII: r=0.781 and 18S-28S: r=0.658). Hybridization thresholds range from -0.43 to 1.78% for COII and -0.052-0.71% for 18S-28S, and both F-1-hybrids and backcrosses were detected in wild populations of two pairs of Ischnura species with overlapping thresholds. Our study suggests that threshold values are suitable to identify species prone to hybridization and that positive isolation-divergence relationships are taxonomically widespread. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
hybridization, odonates, sexual and natural forces, speciation clock
in
Journal of Evolutionary Biology
volume
27
issue
1
pages
76 - 87
publisher
John Wiley & Sons
external identifiers
  • wos:000329254500008
  • scopus:84891659717
ISSN
1420-9101
DOI
10.1111/jeb.12274
language
English
LU publication?
yes
id
a503f9c9-1c05-48ea-a888-80ad7887c90d (old id 4327049)
date added to LUP
2014-03-03 08:48:15
date last changed
2017-08-13 03:06:19
@article{a503f9c9-1c05-48ea-a888-80ad7887c90d,
  abstract     = {Reproductive isolation is the defining characteristic of a biological species, and a common, but often untested prediction is a positive correlation between reproductive isolation and genetic divergence. Here, we test for this correlation in odonates, an order characterized by strong sexual selection. First, we measure reproductive isolation and genetic divergence in eight damselfly genera (30 species pairs) and test for a positive correlation. Second, we estimate the genetic threshold preventing hybrid formation and empirically test this threshold using wild populations of species within the Ischnura genus. Our results indicate a positive and strong correlation between reproductive isolation and genetic distance using both mitochondrial and nuclear genes cytochrome oxidase II (COII: r=0.781 and 18S-28S: r=0.658). Hybridization thresholds range from -0.43 to 1.78% for COII and -0.052-0.71% for 18S-28S, and both F-1-hybrids and backcrosses were detected in wild populations of two pairs of Ischnura species with overlapping thresholds. Our study suggests that threshold values are suitable to identify species prone to hybridization and that positive isolation-divergence relationships are taxonomically widespread.},
  author       = {Sanchez Guillen, Rosa and Cordoba-Aguilar, A. and Cordero-Rivera, A. and Wellenreuther, Maren},
  issn         = {1420-9101},
  keyword      = {hybridization,odonates,sexual and natural forces,speciation clock},
  language     = {eng},
  number       = {1},
  pages        = {76--87},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Evolutionary Biology},
  title        = {Genetic divergence predicts reproductive isolation in damselflies},
  url          = {http://dx.doi.org/10.1111/jeb.12274},
  volume       = {27},
  year         = {2014},
}