---
_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. <i>Evolution</i>.
    2020;74(7):1482-1497. doi:<a href="https://doi.org/10.1111/evo.14027">10.1111/evo.14027</a>
  apa: Perini, S., Rafajlović, M., Westram, A. M., Johannesson, K., &#38; Butlin,
    R. K. (2020). Assortative mating, sexual selection, and their consequences for
    gene flow in Littorina. <i>Evolution</i>. Wiley. <a href="https://doi.org/10.1111/evo.14027">https://doi.org/10.1111/evo.14027</a>
  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.” <i>Evolution</i>. Wiley, 2020. <a href="https://doi.org/10.1111/evo.14027">https://doi.org/10.1111/evo.14027</a>.
  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,” <i>Evolution</i>, 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.” <i>Evolution</i>, vol. 74, no. 7, Wiley, 2020, pp.
    1482–97, doi:<a href="https://doi.org/10.1111/evo.14027">10.1111/evo.14027</a>.
  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:
- access_level: open_access
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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'
intvolume: '        74'
isi: 1
issue: '7'
language:
- iso: eng
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:
  record:
  - id: '8809'
    relation: research_data
    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'
...