---
_id: '8809'
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.
article_processing_charge: No
author:
- first_name: Samuel
  full_name: Perini, Samuel
  last_name: Perini
- first_name: Marina
  full_name: Rafajlovic, Marina
  last_name: Rafajlovic
- 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
  full_name: Butlin, Roger
  last_name: Butlin
citation:
  ama: 'Perini S, Rafajlovic M, Westram AM, Johannesson K, Butlin R. Data from: Assortative
    mating, sexual selection and their consequences for gene flow in Littorina. 2020.
    doi:<a href="https://doi.org/10.5061/dryad.qrfj6q5cn">10.5061/dryad.qrfj6q5cn</a>'
  apa: 'Perini, S., Rafajlovic, M., Westram, A. M., Johannesson, K., &#38; Butlin,
    R. (2020). Data from: Assortative mating, sexual selection and their consequences
    for gene flow in Littorina. Dryad. <a href="https://doi.org/10.5061/dryad.qrfj6q5cn">https://doi.org/10.5061/dryad.qrfj6q5cn</a>'
  chicago: 'Perini, Samuel, Marina Rafajlovic, Anja M Westram, Kerstin Johannesson,
    and Roger Butlin. “Data from: Assortative Mating, Sexual Selection and Their Consequences
    for Gene Flow in Littorina.” Dryad, 2020. <a href="https://doi.org/10.5061/dryad.qrfj6q5cn">https://doi.org/10.5061/dryad.qrfj6q5cn</a>.'
  ieee: 'S. Perini, M. Rafajlovic, A. M. Westram, K. Johannesson, and R. Butlin, “Data
    from: Assortative mating, sexual selection and their consequences for gene flow
    in Littorina.” Dryad, 2020.'
  ista: 'Perini S, Rafajlovic M, Westram AM, Johannesson K, Butlin R. 2020. Data from:
    Assortative mating, sexual selection and their consequences for gene flow in Littorina,
    Dryad, <a href="https://doi.org/10.5061/dryad.qrfj6q5cn">10.5061/dryad.qrfj6q5cn</a>.'
  mla: 'Perini, Samuel, et al. <i>Data from: Assortative Mating, Sexual Selection
    and Their Consequences for Gene Flow in Littorina</i>. Dryad, 2020, doi:<a href="https://doi.org/10.5061/dryad.qrfj6q5cn">10.5061/dryad.qrfj6q5cn</a>.'
  short: S. Perini, M. Rafajlovic, A.M. Westram, K. Johannesson, R. Butlin, (2020).
date_created: 2020-11-25T11:07:25Z
date_published: 2020-07-01T00:00:00Z
date_updated: 2025-07-10T11:54:59Z
day: '01'
department:
- _id: NiBa
doi: 10.5061/dryad.qrfj6q5cn
has_accepted_license: '1'
license: https://creativecommons.org/publicdomain/zero/1.0/
main_file_link:
- open_access: '1'
  url: https://doi.org/10.5061/dryad.qrfj6q5cn
month: '07'
oa: 1
oa_version: Published Version
publisher: Dryad
related_material:
  record:
  - id: '7995'
    relation: used_in_publication
    status: public
status: public
title: 'Data from: Assortative mating, sexual selection and their consequences for
  gene flow in Littorina'
tmp:
  image: /images/cc_0.png
  legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode
  name: Creative Commons Public Domain Dedication (CC0 1.0)
  short: CC0 (1.0)
type: research_data_reference
user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf
year: '2020'
...