Advanced

Local adaptation along an environmental cline in a species with an inversion polymorphism

Wellenreuther, M. LU ; Rosenquist, H.; Jaksons, P. and Larson, K. W. LU (2017) In Journal of Evolutionary Biology 30(6). p.1068-1077
Abstract

Polymorphic inversions are ubiquitous across the animal kingdom and are frequently associated with clines in inversion frequencies across environmental gradients. Such clines are thought to result from selection favouring local adaptation; however, empirical tests are scarce. The seaweed fly Coelopa frigida has an α/β inversion polymorphism, and previous work demonstrated that the α inversion frequency declines from the North Sea to the Baltic Sea and is correlated with changes in tidal range, salinity, algal composition and wrackbed stability. Here, we explicitly test the hypothesis that populations of C. frigida along this cline are locally adapted by conducting a reciprocal transplant experiment of four populations along this cline... (More)

Polymorphic inversions are ubiquitous across the animal kingdom and are frequently associated with clines in inversion frequencies across environmental gradients. Such clines are thought to result from selection favouring local adaptation; however, empirical tests are scarce. The seaweed fly Coelopa frigida has an α/β inversion polymorphism, and previous work demonstrated that the α inversion frequency declines from the North Sea to the Baltic Sea and is correlated with changes in tidal range, salinity, algal composition and wrackbed stability. Here, we explicitly test the hypothesis that populations of C. frigida along this cline are locally adapted by conducting a reciprocal transplant experiment of four populations along this cline to quantify survival. We found that survival varied significantly across treatments and detected a significant Location x Substrate interaction, indicating local adaptation. Survival models showed that flies from locations at both extremes had highest survival on their native substrates, demonstrating that local adaptation is present at the extremes of the cline. Survival at the two intermediate locations was, however, not elevated at the native substrates, suggesting that gene flow in intermediate habitats may override selection. Together, our results support the notion that population extremes of species with polymorphic inversions are often locally adapted, even when spatially close, consistent with the growing view that inversions can have direct and strong effects on the fitness of species.

(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
Adaptation, Coelopa frigida, Environmental cline, Inversion, Polymorphism, Survival
in
Journal of Evolutionary Biology
volume
30
issue
6
pages
1068 - 1077
publisher
John Wiley & Sons
external identifiers
  • scopus:85018412032
  • wos:000403155000002
ISSN
1010-061X
DOI
10.1111/jeb.13064
language
English
LU publication?
yes
id
7d4078ec-0ec0-4e23-9df3-3867c62d532a
date added to LUP
2017-05-23 10:04:54
date last changed
2018-02-18 23:41:19
@article{7d4078ec-0ec0-4e23-9df3-3867c62d532a,
  abstract     = {<p>Polymorphic inversions are ubiquitous across the animal kingdom and are frequently associated with clines in inversion frequencies across environmental gradients. Such clines are thought to result from selection favouring local adaptation; however, empirical tests are scarce. The seaweed fly Coelopa frigida has an α/β inversion polymorphism, and previous work demonstrated that the α inversion frequency declines from the North Sea to the Baltic Sea and is correlated with changes in tidal range, salinity, algal composition and wrackbed stability. Here, we explicitly test the hypothesis that populations of C. frigida along this cline are locally adapted by conducting a reciprocal transplant experiment of four populations along this cline to quantify survival. We found that survival varied significantly across treatments and detected a significant Location x Substrate interaction, indicating local adaptation. Survival models showed that flies from locations at both extremes had highest survival on their native substrates, demonstrating that local adaptation is present at the extremes of the cline. Survival at the two intermediate locations was, however, not elevated at the native substrates, suggesting that gene flow in intermediate habitats may override selection. Together, our results support the notion that population extremes of species with polymorphic inversions are often locally adapted, even when spatially close, consistent with the growing view that inversions can have direct and strong effects on the fitness of species.</p>},
  author       = {Wellenreuther, M. and Rosenquist, H. and Jaksons, P. and Larson, K. W.},
  issn         = {1010-061X},
  keyword      = {Adaptation,Coelopa frigida,Environmental cline,Inversion,Polymorphism,Survival},
  language     = {eng},
  number       = {6},
  pages        = {1068--1077},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Evolutionary Biology},
  title        = {Local adaptation along an environmental cline in a species with an inversion polymorphism},
  url          = {http://dx.doi.org/10.1111/jeb.13064},
  volume       = {30},
  year         = {2017},
}