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Carryover effects from natal habitat type upon competitive ability lead to trait divergence or source–sink dynamics

Kristensen, Nadiah Pardede LU ; Johansson, Jacob LU ; Chisholm, Ryan A.; Smith, Henrik G. LU and Kokko, Hanna (2018) In Ecology Letters 21(9). p.1341-1352
Abstract

Local adaptation to rare habitats is difficult due to gene flow, but can occur if the habitat has higher productivity. Differences in offspring phenotypes have attracted little attention in this context. We model a scenario where the rarer habitat improves offspring's later competitive ability – a carryover effect that operates on top of local adaptation to one or the other habitat type. Assuming localised dispersal, so the offspring tend to settle in similar habitat to the natal type, the superior competitive ability of offspring remaining in the rarer habitat hampers immigration from the majority habitat. This initiates a positive feedback between local adaptation and trait divergence, which can thereafter be reinforced by coevolution... (More)

Local adaptation to rare habitats is difficult due to gene flow, but can occur if the habitat has higher productivity. Differences in offspring phenotypes have attracted little attention in this context. We model a scenario where the rarer habitat improves offspring's later competitive ability – a carryover effect that operates on top of local adaptation to one or the other habitat type. Assuming localised dispersal, so the offspring tend to settle in similar habitat to the natal type, the superior competitive ability of offspring remaining in the rarer habitat hampers immigration from the majority habitat. This initiates a positive feedback between local adaptation and trait divergence, which can thereafter be reinforced by coevolution with dispersal traits that match ecotype to habitat type. Rarity strengthens selection on dispersal traits and promotes linkage disequilibrium between locally adapted traits and ecotype-habitat matching dispersal. We propose that carryover effects may initiate isolation by ecology.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Developmental effects, ecological speciation, epigenetics, habitat selection, maternal effects, natal effects, natal-habitat preference induction, silver spoon, source–sink, spatial genetic variation
in
Ecology Letters
volume
21
issue
9
pages
12 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:85051181426
ISSN
1461-023X
DOI
10.1111/ele.13100
language
English
LU publication?
yes
id
031ba8ba-b282-40c7-8fe9-8490baab6830
date added to LUP
2018-09-07 12:02:57
date last changed
2019-04-23 04:38:01
@article{031ba8ba-b282-40c7-8fe9-8490baab6830,
  abstract     = {<p>Local adaptation to rare habitats is difficult due to gene flow, but can occur if the habitat has higher productivity. Differences in offspring phenotypes have attracted little attention in this context. We model a scenario where the rarer habitat improves offspring's later competitive ability – a carryover effect that operates on top of local adaptation to one or the other habitat type. Assuming localised dispersal, so the offspring tend to settle in similar habitat to the natal type, the superior competitive ability of offspring remaining in the rarer habitat hampers immigration from the majority habitat. This initiates a positive feedback between local adaptation and trait divergence, which can thereafter be reinforced by coevolution with dispersal traits that match ecotype to habitat type. Rarity strengthens selection on dispersal traits and promotes linkage disequilibrium between locally adapted traits and ecotype-habitat matching dispersal. We propose that carryover effects may initiate isolation by ecology.</p>},
  author       = {Kristensen, Nadiah Pardede and Johansson, Jacob and Chisholm, Ryan A. and Smith, Henrik G. and Kokko, Hanna},
  issn         = {1461-023X},
  keyword      = {Developmental effects,ecological speciation,epigenetics,habitat selection,maternal effects,natal effects,natal-habitat preference induction,silver spoon,source–sink,spatial genetic variation},
  language     = {eng},
  month        = {09},
  number       = {9},
  pages        = {1341--1352},
  publisher    = {Wiley-Blackwell},
  series       = {Ecology Letters},
  title        = {Carryover effects from natal habitat type upon competitive ability lead to trait divergence or source–sink dynamics},
  url          = {http://dx.doi.org/10.1111/ele.13100},
  volume       = {21},
  year         = {2018},
}