Advanced

Population divergence in chemical signals and the potential for premating isolation between islet- and mainland populations of the Skyros wall lizard (Podarcis gaigeae).

Runemark, Anna LU ; Gabirot, M and Svensson, Erik LU (2011) In Journal of Evolutionary Biology 24. p.795-809
Abstract
When sexually selected traits diverge because of different local selective environments, premating isolation might arise as a correlated response. However, sexually selected traits might also diverge by stochastic forces. Here, we show that odour-based mate preferences and scent composition have diverged between islet- and mainland populations of Skyros wall lizard, Podarcis gaigeae. We quantified the degree of scent-mediated premating isolation between populations. Islet lizards preferred scent from islet lizards, whereas the mainland populations were less discriminatory. The pheromone compositions differed more between islets than between islet- and mainland populations and did not differ significantly between mainland populations. There... (More)
When sexually selected traits diverge because of different local selective environments, premating isolation might arise as a correlated response. However, sexually selected traits might also diverge by stochastic forces. Here, we show that odour-based mate preferences and scent composition have diverged between islet- and mainland populations of Skyros wall lizard, Podarcis gaigeae. We quantified the degree of scent-mediated premating isolation between populations. Islet lizards preferred scent from islet lizards, whereas the mainland populations were less discriminatory. The pheromone compositions differed more between islets than between islet- and mainland populations and did not differ significantly between mainland populations. There was a tendency for population divergence in pheromones to be positively correlated with neutral genetic divergence. This might indicate a role for genetic drift in evolutionary change in these signals and partial decoupling between signals and preferences. Our results suggest that chemical signals and associated mate preferences can diverge through stochastic and selective forces and influence premating isolation. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
behavioural isolation, founder effects, island biology, mate preferences, pheromones, reinforcement
in
Journal of Evolutionary Biology
volume
24
pages
795 - 809
publisher
John Wiley & Sons
external identifiers
  • wos:000288382100010
  • scopus:79952766169
ISSN
1420-9101
DOI
10.1111/j.1420-9101.2010.02214.x
language
English
LU publication?
yes
id
987a4925-c169-44c4-8dda-c11a56979cd2 (old id 1777090)
date added to LUP
2011-02-07 12:47:59
date last changed
2017-10-22 03:30:15
@article{987a4925-c169-44c4-8dda-c11a56979cd2,
  abstract     = {When sexually selected traits diverge because of different local selective environments, premating isolation might arise as a correlated response. However, sexually selected traits might also diverge by stochastic forces. Here, we show that odour-based mate preferences and scent composition have diverged between islet- and mainland populations of Skyros wall lizard, Podarcis gaigeae. We quantified the degree of scent-mediated premating isolation between populations. Islet lizards preferred scent from islet lizards, whereas the mainland populations were less discriminatory. The pheromone compositions differed more between islets than between islet- and mainland populations and did not differ significantly between mainland populations. There was a tendency for population divergence in pheromones to be positively correlated with neutral genetic divergence. This might indicate a role for genetic drift in evolutionary change in these signals and partial decoupling between signals and preferences. Our results suggest that chemical signals and associated mate preferences can diverge through stochastic and selective forces and influence premating isolation.},
  author       = {Runemark, Anna and Gabirot, M and Svensson, Erik},
  issn         = {1420-9101},
  keyword      = {behavioural isolation,founder effects,island biology,mate preferences,pheromones,reinforcement},
  language     = {eng},
  pages        = {795--809},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Evolutionary Biology},
  title        = {Population divergence in chemical signals and the potential for premating isolation between islet- and mainland populations of the Skyros wall lizard (Podarcis gaigeae).},
  url          = {http://dx.doi.org/10.1111/j.1420-9101.2010.02214.x},
  volume       = {24},
  year         = {2011},
}