---
_id: '7995'
abstract:
- lang: eng
text: When divergent populations are connected by gene flow, the establishment of
complete reproductive isolation usually requires the joint action of multiple
barrier effects. One example where multiple barrier effects are coupled consists
of a single trait that is under divergent natural selection and also mediates
assortative mating. Such multiple‐effect traits can strongly reduce gene flow.
However, there are few cases where patterns of assortative mating have been described
quantitatively and their impact on gene flow has been determined. Two ecotypes
of the coastal marine snail, Littorina saxatilis , occur in North Atlantic rocky‐shore
habitats dominated by either crab predation or wave action. There is evidence
for divergent natural selection acting on size, and size‐assortative mating has
previously been documented. Here, we analyze the mating pattern in L. saxatilis
with respect to size in intensively sampled transects across boundaries between
the habitats. We show that the mating pattern is mostly conserved between ecotypes
and that it generates both assortment and directional sexual selection for small
male size. Using simulations, we show that the mating pattern can contribute to
reproductive isolation between ecotypes but the barrier to gene flow is likely
strengthened more by sexual selection than by assortment.
acknowledgement: We are very grateful to I. Sencic, L. Brettell, A.‐L. Liabot, J.
Galindo, M. Ravinet, and A. Butlin for their help with field sampling and mating
experiments. This work was funded by the Natural Environment Research Council, European
Research Council and Swedish Research Council VR and we are also very grateful for
the support of the Linnaeus Centre for Marine Evolutionary Biology at the University
of Gothenburg. The simulations were performed on resources at Chalmers Centre for
Computational Science and Engineering (C3SE) provided by the Swedish National Infrastructure
for Computing (SNIC). AMW was funded by the European Union's Horizon 2020 research
and innovation program under Marie Skłodowska‐Curie grant agreement no. 797747.
article_processing_charge: No
article_type: original
author:
- first_name: Samuel
full_name: Perini, Samuel
last_name: Perini
- first_name: Marina
full_name: Rafajlović, Marina
last_name: Rafajlović
- first_name: Anja M
full_name: Westram, Anja M
id: 3C147470-F248-11E8-B48F-1D18A9856A87
last_name: Westram
orcid: 0000-0003-1050-4969
- first_name: Kerstin
full_name: Johannesson, Kerstin
last_name: Johannesson
- first_name: Roger K.
full_name: Butlin, Roger K.
last_name: Butlin
citation:
ama: Perini S, Rafajlović M, Westram AM, Johannesson K, Butlin RK. Assortative mating,
sexual selection, and their consequences for gene flow in Littorina. Evolution.
2020;74(7):1482-1497. doi:10.1111/evo.14027
apa: Perini, S., Rafajlović, M., Westram, A. M., Johannesson, K., & Butlin,
R. K. (2020). Assortative mating, sexual selection, and their consequences for
gene flow in Littorina. Evolution. Wiley. https://doi.org/10.1111/evo.14027
chicago: Perini, Samuel, Marina Rafajlović, Anja M Westram, Kerstin Johannesson,
and Roger K. Butlin. “Assortative Mating, Sexual Selection, and Their Consequences
for Gene Flow in Littorina.” Evolution. Wiley, 2020. https://doi.org/10.1111/evo.14027.
ieee: S. Perini, M. Rafajlović, A. M. Westram, K. Johannesson, and R. K. Butlin,
“Assortative mating, sexual selection, and their consequences for gene flow in
Littorina,” Evolution, vol. 74, no. 7. Wiley, pp. 1482–1497, 2020.
ista: Perini S, Rafajlović M, Westram AM, Johannesson K, Butlin RK. 2020. Assortative
mating, sexual selection, and their consequences for gene flow in Littorina. Evolution.
74(7), 1482–1497.
mla: Perini, Samuel, et al. “Assortative Mating, Sexual Selection, and Their Consequences
for Gene Flow in Littorina.” Evolution, vol. 74, no. 7, Wiley, 2020, pp.
1482–97, doi:10.1111/evo.14027.
short: S. Perini, M. Rafajlović, A.M. Westram, K. Johannesson, R.K. Butlin, Evolution
74 (2020) 1482–1497.
date_created: 2020-06-22T09:14:21Z
date_published: 2020-07-01T00:00:00Z
date_updated: 2023-08-22T07:13:38Z
day: '01'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1111/evo.14027
ec_funded: 1
external_id:
isi:
- '000539780800001'
file:
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checksum: 56235bf1e2a9e25f96196bb13b6b754d
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creator: dernst
date_created: 2020-11-25T10:49:48Z
date_updated: 2020-11-25T10:49:48Z
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file_date_updated: 2020-11-25T10:49:48Z
has_accepted_license: '1'
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language:
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license: https://creativecommons.org/licenses/by/4.0/
month: '07'
oa: 1
oa_version: Published Version
page: 1482-1497
project:
- _id: 265B41B8-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '797747'
name: Theoretical and empirical approaches to understanding Parallel Adaptation
publication: Evolution
publication_identifier:
eissn:
- '15585646'
issn:
- '00143820'
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
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status: public
scopus_import: '1'
status: public
title: Assortative mating, sexual selection, and their consequences for gene flow
in Littorina
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 74
year: '2020'
...
---
_id: '1063'
abstract:
- lang: eng
text: Severe environmental change can drive a population extinct unless the population
adapts in time to the new conditions (“evolutionary rescue”). How does biparental
sexual reproduction influence the chances of population persistence compared to
clonal reproduction or selfing? In this article, we set up a one‐locus two‐allele
model for adaptation in diploid species, where rescue is contingent on the establishment
of the mutant homozygote. Reproduction can occur by random mating, selfing, or
clonally. Random mating generates and destroys the rescue mutant; selfing is efficient
at generating it but at the same time depletes the heterozygote, which can lead
to a low mutant frequency in the standing genetic variation. Due to these (and
other) antagonistic effects, we find a nontrivial dependence of population survival
on the rate of sex/selfing, which is strongly influenced by the dominance coefficient
of the mutation before and after the environmental change. Importantly, since
mating with the wild‐type breaks the mutant homozygote up, a slow decay of the
wild‐type population size can impede rescue in randomly mating populations.
article_processing_charge: No
author:
- first_name: Hildegard
full_name: Uecker, Hildegard
id: 2DB8F68A-F248-11E8-B48F-1D18A9856A87
last_name: Uecker
orcid: 0000-0001-9435-2813
citation:
ama: Uecker H. Evolutionary rescue in randomly mating, selfing, and clonal populations.
Evolution. 2017;71(4):845-858. doi:10.1111/evo.13191
apa: Uecker, H. (2017). Evolutionary rescue in randomly mating, selfing, and clonal
populations. Evolution. Wiley-Blackwell. https://doi.org/10.1111/evo.13191
chicago: Uecker, Hildegard. “Evolutionary Rescue in Randomly Mating, Selfing, and
Clonal Populations.” Evolution. Wiley-Blackwell, 2017. https://doi.org/10.1111/evo.13191.
ieee: H. Uecker, “Evolutionary rescue in randomly mating, selfing, and clonal populations,”
Evolution, vol. 71, no. 4. Wiley-Blackwell, pp. 845–858, 2017.
ista: Uecker H. 2017. Evolutionary rescue in randomly mating, selfing, and clonal
populations. Evolution. 71(4), 845–858.
mla: Uecker, Hildegard. “Evolutionary Rescue in Randomly Mating, Selfing, and Clonal
Populations.” Evolution, vol. 71, no. 4, Wiley-Blackwell, 2017, pp. 845–58,
doi:10.1111/evo.13191.
short: H. Uecker, Evolution 71 (2017) 845–858.
date_created: 2018-12-11T11:49:57Z
date_published: 2017-04-01T00:00:00Z
date_updated: 2025-05-28T11:42:51Z
day: '01'
department:
- _id: NiBa
doi: 10.1111/evo.13191
ec_funded: 1
external_id:
isi:
- '000398545200003'
intvolume: ' 71'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://biorxiv.org/content/early/2016/10/14/081042
month: '04'
oa: 1
oa_version: Submitted Version
page: 845 - 858
project:
- _id: 25B07788-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '250152'
name: Limits to selection in biology and in evolutionary computation
publication: Evolution
publication_identifier:
issn:
- '00143820'
publication_status: published
publisher: Wiley-Blackwell
publist_id: '6327'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Evolutionary rescue in randomly mating, selfing, and clonal populations
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 71
year: '2017'
...
---
_id: '990'
abstract:
- lang: eng
text: Assortative mating is an important driver of speciation in populations with
gene flow and is predicted to evolve under certain conditions in few-locus models.
However, the evolution of assortment is less understood for mating based on quantitative
traits, which are often characterized by high genetic variability and extensive
linkage disequilibrium between trait loci. We explore this scenario for a two-deme
model with migration, by considering a single polygenic trait subject to divergent
viability selection across demes, as well as assortative mating and sexual selection
within demes, and investigate how trait divergence is shaped by various evolutionary
forces. Our analysis reveals the existence of sharp thresholds of assortment strength,
at which divergence increases dramatically. We also study the evolution of assortment
via invasion of modifiers of mate discrimination and show that the ES assortment
strength has an intermediate value under a range of migration-selection parameters,
even in diverged populations, due to subtle effects which depend sensitively on
the extent of phenotypic variation within these populations. The evolutionary
dynamics of the polygenic trait is studied using the hypergeometric and infinitesimal
models. We further investigate the sensitivity of our results to the assumptions
of the hypergeometric model, using individual-based simulations.
article_processing_charge: No
author:
- first_name: Himani
full_name: Sachdeva, Himani
id: 42377A0A-F248-11E8-B48F-1D18A9856A87
last_name: Sachdeva
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
citation:
ama: Sachdeva H, Barton NH. Divergence and evolution of assortative mating in a
polygenic trait model of speciation with gene flow. Evolution; International
Journal of Organic Evolution. 2017;71(6):1478-1493. doi:10.1111/evo.13252
apa: Sachdeva, H., & Barton, N. H. (2017). Divergence and evolution of assortative
mating in a polygenic trait model of speciation with gene flow. Evolution;
International Journal of Organic Evolution. Wiley-Blackwell. https://doi.org/10.1111/evo.13252
chicago: Sachdeva, Himani, and Nicholas H Barton. “Divergence and Evolution of Assortative
Mating in a Polygenic Trait Model of Speciation with Gene Flow.” Evolution;
International Journal of Organic Evolution. Wiley-Blackwell, 2017. https://doi.org/10.1111/evo.13252.
ieee: H. Sachdeva and N. H. Barton, “Divergence and evolution of assortative mating
in a polygenic trait model of speciation with gene flow,” Evolution; International
Journal of Organic Evolution, vol. 71, no. 6. Wiley-Blackwell, pp. 1478–1493,
2017.
ista: Sachdeva H, Barton NH. 2017. Divergence and evolution of assortative mating
in a polygenic trait model of speciation with gene flow. Evolution; International
Journal of Organic Evolution. 71(6), 1478–1493.
mla: Sachdeva, Himani, and Nicholas H. Barton. “Divergence and Evolution of Assortative
Mating in a Polygenic Trait Model of Speciation with Gene Flow.” Evolution;
International Journal of Organic Evolution, vol. 71, no. 6, Wiley-Blackwell,
2017, pp. 1478–93, doi:10.1111/evo.13252.
short: H. Sachdeva, N.H. Barton, Evolution; International Journal of Organic Evolution
71 (2017) 1478–1493.
date_created: 2018-12-11T11:49:34Z
date_published: 2017-06-01T00:00:00Z
date_updated: 2025-05-28T11:42:51Z
day: '01'
ddc:
- '576'
department:
- _id: NiBa
doi: 10.1111/evo.13252
ec_funded: 1
external_id:
isi:
- '000403014800005'
pmid:
- '28419447'
file:
- access_level: open_access
checksum: 6d4c38cb1347fd43620d1736c6df5c79
content_type: application/pdf
creator: dernst
date_created: 2019-04-17T07:37:04Z
date_updated: 2020-07-14T12:48:18Z
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intvolume: ' 71'
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language:
- iso: eng
month: '06'
oa: 1
oa_version: Submitted Version
page: '1478 - 1493 '
pmid: 1
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 25B07788-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '250152'
name: Limits to selection in biology and in evolutionary computation
publication: Evolution; International Journal of Organic Evolution
publication_identifier:
issn:
- '00143820'
publication_status: published
publisher: Wiley-Blackwell
publist_id: '6409'
pubrep_id: '977'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Divergence and evolution of assortative mating in a polygenic trait model of
speciation with gene flow
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 71
year: '2017'
...