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Strong asymmetry in the relative strengths of prezygotic and postzygotic barriers between two damselfly sister species

Sanchez Guillen, Rosa LU ; Wellenreuther, Maren LU and Cordero Rivera, Adolfo (2012) In Evolution 66(3). p.690-707
Abstract
One of the longest debates in biology has been over the relative importance of different isolating barriers in speciation. However, for most species, there are few data evaluating their relative contributions and we can only speculate on the general roles of pre- and postzygotic isolation. Here, we quantify the absolute and cumulative contribution of 19 potential reproductive barriers between two sympatric damselfly sister species, Ischnura elegans and I. graellsii, including both premating (habitat, temporal, sexual and mechanical isolation) and postmating barriers (prezygotic: sperm insemination success and removal rate, oviposition success, fertility, fecundity; postzygotic: hybrid viability, hybrid sterility and hybrid breakdown). In... (More)
One of the longest debates in biology has been over the relative importance of different isolating barriers in speciation. However, for most species, there are few data evaluating their relative contributions and we can only speculate on the general roles of pre- and postzygotic isolation. Here, we quantify the absolute and cumulative contribution of 19 potential reproductive barriers between two sympatric damselfly sister species, Ischnura elegans and I. graellsii, including both premating (habitat, temporal, sexual and mechanical isolation) and postmating barriers (prezygotic: sperm insemination success and removal rate, oviposition success, fertility, fecundity; postzygotic: hybrid viability, hybrid sterility and hybrid breakdown). In sympatry, total reproductive isolation between I. elegans females and I. graellsii males was 95.2%, owing mostly to a premating mechanical incompatibility (93.4%), whereas other barriers were of little importance. Isolation between I. graellsii females and I. elegans males was also nearly complete (95.8%), which was caused by the cumulative action of multiple prezygotic (n= 4, 75.4%) and postzygotic postmating barriers (n= 5, 7.4%). Our results suggest that premating barriers are key factors in preventing gene flow between species, and that the relative strengths of premating barriers is highly asymmetrical between the reciprocal crosses. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Evolution
volume
66
issue
3
pages
690 - 707
publisher
Wiley-Blackwell
external identifiers
  • wos:000300931400007
  • pmid:22380433
  • scopus:84857688099
ISSN
1558-5646
DOI
10.1111/j.1558-5646.2011.01469.x
project
Colour genes in dragonflies
language
English
LU publication?
yes
id
db5034ff-df58-4b2d-9c82-8e867ab9e953 (old id 2432390)
date added to LUP
2012-05-08 10:37:12
date last changed
2017-10-22 04:09:42
@article{db5034ff-df58-4b2d-9c82-8e867ab9e953,
  abstract     = {One of the longest debates in biology has been over the relative importance of different isolating barriers in speciation. However, for most species, there are few data evaluating their relative contributions and we can only speculate on the general roles of pre- and postzygotic isolation. Here, we quantify the absolute and cumulative contribution of 19 potential reproductive barriers between two sympatric damselfly sister species, Ischnura elegans and I. graellsii, including both premating (habitat, temporal, sexual and mechanical isolation) and postmating barriers (prezygotic: sperm insemination success and removal rate, oviposition success, fertility, fecundity; postzygotic: hybrid viability, hybrid sterility and hybrid breakdown). In sympatry, total reproductive isolation between I. elegans females and I. graellsii males was 95.2%, owing mostly to a premating mechanical incompatibility (93.4%), whereas other barriers were of little importance. Isolation between I. graellsii females and I. elegans males was also nearly complete (95.8%), which was caused by the cumulative action of multiple prezygotic (n= 4, 75.4%) and postzygotic postmating barriers (n= 5, 7.4%). Our results suggest that premating barriers are key factors in preventing gene flow between species, and that the relative strengths of premating barriers is highly asymmetrical between the reciprocal crosses.},
  author       = {Sanchez Guillen, Rosa and Wellenreuther, Maren and Cordero Rivera, Adolfo},
  issn         = {1558-5646},
  language     = {eng},
  number       = {3},
  pages        = {690--707},
  publisher    = {Wiley-Blackwell},
  series       = {Evolution},
  title        = {Strong asymmetry in the relative strengths of prezygotic and postzygotic barriers between two damselfly sister species},
  url          = {http://dx.doi.org/10.1111/j.1558-5646.2011.01469.x},
  volume       = {66},
  year         = {2012},
}