---
_id: '10604'
abstract:
- lang: eng
text: Maternally inherited Wolbachia transinfections are being introduced into natural
mosquito populations to reduce the transmission of dengue, Zika, and other arboviruses.
Wolbachia-induced cytoplasmic incompatibility provides a frequency-dependent reproductive
advantage to infected females that can spread transinfections within and among
populations. However, because transinfections generally reduce host fitness, they
tend to spread within populations only after their frequency exceeds a critical
threshold. This produces bistability with stable equilibrium frequencies at both
0 and 1, analogous to the bistability produced by underdominance between alleles
or karyotypes and by population dynamics under Allee effects. Here, we analyze
how stochastic frequency variation produced by finite population size can facilitate
the local spread of variants with bistable dynamics into areas where invasion
is unexpected from deterministic models. Our exemplar is the establishment of
wMel Wolbachia in the Aedes aegypti population of Pyramid Estates (PE), a small
community in far north Queensland, Australia. In 2011, wMel was stably introduced
into Gordonvale, separated from PE by barriers to A. aegypti dispersal. After
nearly 6 years during which wMel was observed only at low frequencies in PE, corresponding
to an apparent equilibrium between immigration and selection, wMel rose to fixation
by 2018. Using analytic approximations and statistical analyses, we demonstrate
that the observed fixation of wMel at PE is consistent with both stochastic transition
past an unstable threshold frequency and deterministic transformation produced
by steady immigration at a rate just above the threshold required for deterministic
invasion. The indeterminacy results from a delicate balance of parameters needed
to produce the delayed transition observed. Our analyses suggest that once Wolbachia
transinfections are established locally through systematic introductions, stochastic
“threshold crossing” is likely to only minimally enhance spatial spread, providing
a local ratchet that slightly—but systematically—aids area-wide transformation
of disease-vector populations in heterogeneous landscapes.
acknowledgement: We thank S. O'Neill, C. Simmons, and the World Mosquito Project for
providing access to unpublished data. S. Ritchie provided valuable insights into
Aedes aegypti biology and the literature describing A. aegypti populations near
Cairns. We thank B. Cooper for help with the figures and D. Shropshire, S. O'Neill,
S. Ritchie, A. Hoffmann, B. Cooper, and members of the Cooper lab for comments on
an earlier draft. Comments from three reviewers greatly improved our presentation.
article_processing_charge: No
article_type: original
author:
- first_name: Michael
full_name: Turelli, Michael
last_name: Turelli
- 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: Turelli M, Barton NH. Why did the Wolbachia transinfection cross the road?
Drift, deterministic dynamics, and disease control. Evolution Letters.
2022;6(1):92-105. doi:10.1002/evl3.270
apa: Turelli, M., & Barton, N. H. (2022). Why did the Wolbachia transinfection
cross the road? Drift, deterministic dynamics, and disease control. Evolution
Letters. Wiley. https://doi.org/10.1002/evl3.270
chicago: Turelli, Michael, and Nicholas H Barton. “Why Did the Wolbachia Transinfection
Cross the Road? Drift, Deterministic Dynamics, and Disease Control.” Evolution
Letters. Wiley, 2022. https://doi.org/10.1002/evl3.270.
ieee: M. Turelli and N. H. Barton, “Why did the Wolbachia transinfection cross the
road? Drift, deterministic dynamics, and disease control,” Evolution Letters,
vol. 6, no. 1. Wiley, pp. 92–105, 2022.
ista: Turelli M, Barton NH. 2022. Why did the Wolbachia transinfection cross the
road? Drift, deterministic dynamics, and disease control. Evolution Letters. 6(1),
92–105.
mla: Turelli, Michael, and Nicholas H. Barton. “Why Did the Wolbachia Transinfection
Cross the Road? Drift, Deterministic Dynamics, and Disease Control.” Evolution
Letters, vol. 6, no. 1, Wiley, 2022, pp. 92–105, doi:10.1002/evl3.270.
short: M. Turelli, N.H. Barton, Evolution Letters 6 (2022) 92–105.
date_created: 2022-01-09T09:45:17Z
date_published: 2022-02-01T00:00:00Z
date_updated: 2023-08-02T13:50:09Z
day: '01'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1002/evl3.270
external_id:
isi:
- '000754412600008'
file:
- access_level: open_access
checksum: 7e9a37e3b65b480cd7014a6a4a7e460a
content_type: application/pdf
creator: dernst
date_created: 2022-07-29T06:59:10Z
date_updated: 2022-07-29T06:59:10Z
file_id: '11689'
file_name: 2022_EvolutionLetters_Turelli.pdf
file_size: 2435185
relation: main_file
success: 1
file_date_updated: 2022-07-29T06:59:10Z
has_accepted_license: '1'
intvolume: ' 6'
isi: 1
issue: '1'
keyword:
- genetics
- ecology
- evolution
- behavior and systematics
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: 92-105
publication: Evolution Letters
publication_identifier:
eissn:
- 2056-3744
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
record:
- id: '11686'
relation: research_data
status: public
status: public
title: Why did the Wolbachia transinfection cross the road? Drift, deterministic dynamics,
and disease control
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 6
year: '2022'
...
---
_id: '12001'
abstract:
- lang: eng
text: 'Sexual antagonism is a common hypothesis for driving the evolution of sex
chromosomes, whereby recombination suppression is favored between sexually antagonistic
loci and the sex-determining locus to maintain beneficial combinations of alleles.
This results in the formation of a sex-determining region. Chromosomal inversions
may contribute to recombination suppression but their precise role in sex chromosome
evolution remains unclear. Because local adaptation is frequently facilitated
through the suppression of recombination between adaptive loci by chromosomal
inversions, there is potential for inversions that cover sex-determining regions
to be involved in local adaptation as well, particularly if habitat variation
creates environment-dependent sexual antagonism. With these processes in mind,
we investigated sex determination in a well-studied example of local adaptation
within a species: the intertidal snail, Littorina saxatilis. Using SNP data from
a Swedish hybrid zone, we find novel evidence for a female-heterogametic sex determination
system that is restricted to one ecotype. Our results suggest that four putative
chromosomal inversions, two previously described and two newly discovered, span
the putative sex chromosome pair. We determine their differing associations with
sex, which suggest distinct strata of differing ages. The same inversions are
found in the second ecotype but do not show any sex association. The striking
disparity in inversion-sex associations between ecotypes that are connected by
gene flow across a habitat transition that is just a few meters wide indicates
a difference in selective regime that has produced a distinct barrier to the spread
of the newly discovered sex-determining region between ecotypes. Such sex chromosome-environment
interactions have not previously been uncovered in L. saxatilis and are known
in few other organisms. A combination of both sex-specific selection and divergent
natural selection is required to explain these highly unusual patterns.'
acknowledgement: We thank A. Wright and four anonymous reviewers for valuable comments
on an earlier draft of this manuscript and all members of the Littorina group for
helpful discussions. This work was supported by a European Research Council grant
to RKB and by a Natural Environment Research Council studentship to KEH through
the ACCE doctoral training program. KJ acknowledges support from the Swedish Science
Research Council VR (Vetenskaprådet) (2017-03798). RF was supported by an FCT CEEC
(Fundação para a Ciênca e a Tecnologia, Concurso Estímulo ao Emprego Científico)
contract (2020.00275.CEECIND).
article_processing_charge: Yes
article_type: original
author:
- first_name: Katherine E.
full_name: Hearn, Katherine E.
last_name: Hearn
- first_name: Eva L.
full_name: Koch, Eva L.
last_name: Koch
- first_name: Sean
full_name: Stankowski, Sean
id: 43161670-5719-11EA-8025-FABC3DDC885E
last_name: Stankowski
- first_name: Roger K.
full_name: Butlin, Roger K.
last_name: Butlin
- first_name: Rui
full_name: Faria, Rui
last_name: Faria
- first_name: Kerstin
full_name: Johannesson, Kerstin
last_name: Johannesson
- first_name: Anja M
full_name: Westram, Anja M
id: 3C147470-F248-11E8-B48F-1D18A9856A87
last_name: Westram
orcid: 0000-0003-1050-4969
citation:
ama: Hearn KE, Koch EL, Stankowski S, et al. Differing associations between sex
determination and sex-linked inversions in two ecotypes of Littorina saxatilis.
Evolution Letters. 2022;6(5):358-374. doi:10.1002/evl3.295
apa: Hearn, K. E., Koch, E. L., Stankowski, S., Butlin, R. K., Faria, R., Johannesson,
K., & Westram, A. M. (2022). Differing associations between sex determination
and sex-linked inversions in two ecotypes of Littorina saxatilis. Evolution
Letters. Oxford Academic. https://doi.org/10.1002/evl3.295
chicago: Hearn, Katherine E., Eva L. Koch, Sean Stankowski, Roger K. Butlin, Rui
Faria, Kerstin Johannesson, and Anja M Westram. “Differing Associations between
Sex Determination and Sex-Linked Inversions in Two Ecotypes of Littorina Saxatilis.”
Evolution Letters. Oxford Academic, 2022. https://doi.org/10.1002/evl3.295.
ieee: K. E. Hearn et al., “Differing associations between sex determination
and sex-linked inversions in two ecotypes of Littorina saxatilis,” Evolution
Letters, vol. 6, no. 5. Oxford Academic, pp. 358–374, 2022.
ista: Hearn KE, Koch EL, Stankowski S, Butlin RK, Faria R, Johannesson K, Westram
AM. 2022. Differing associations between sex determination and sex-linked inversions
in two ecotypes of Littorina saxatilis. Evolution Letters. 6(5), 358–374.
mla: Hearn, Katherine E., et al. “Differing Associations between Sex Determination
and Sex-Linked Inversions in Two Ecotypes of Littorina Saxatilis.” Evolution
Letters, vol. 6, no. 5, Oxford Academic, 2022, pp. 358–74, doi:10.1002/evl3.295.
short: K.E. Hearn, E.L. Koch, S. Stankowski, R.K. Butlin, R. Faria, K. Johannesson,
A.M. Westram, Evolution Letters 6 (2022) 358–374.
date_created: 2022-08-28T22:02:02Z
date_published: 2022-10-01T00:00:00Z
date_updated: 2023-08-03T13:18:17Z
day: '01'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1002/evl3.295
external_id:
isi:
- '000839621100001'
file:
- access_level: open_access
checksum: 2dcd06186a11b7d1be4cddc6b189f8fb
content_type: application/pdf
creator: dernst
date_created: 2023-02-27T07:17:42Z
date_updated: 2023-02-27T07:17:42Z
file_id: '12686'
file_name: 2022_EvolutionLetters_Hearn.pdf
file_size: 2368965
relation: main_file
success: 1
file_date_updated: 2023-02-27T07:17:42Z
has_accepted_license: '1'
intvolume: ' 6'
isi: 1
issue: '5'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '10'
oa: 1
oa_version: Published Version
page: 358-374
publication: Evolution Letters
publication_identifier:
eissn:
- 2056-3744
publication_status: published
publisher: Oxford Academic
quality_controlled: '1'
scopus_import: '1'
status: public
title: Differing associations between sex determination and sex-linked inversions
in two ecotypes of Littorina saxatilis
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: 6
year: '2022'
...
---
_id: '9394'
abstract:
- lang: eng
text: 'Chromosomal inversions have long been recognized for their role in local
adaptation. By suppressing recombination in heterozygous individuals, they can
maintain coadapted gene complexes and protect them from homogenizing effects of
gene flow. However, to fully understand their importance for local adaptation
we need to know their influence on phenotypes under divergent selection. For this,
the marine snail Littorina saxatilis provides an ideal study system. Divergent
ecotypes adapted to wave action and crab predation occur in close proximity on
intertidal shores with gene flow between them. Here, we used F2 individuals obtained
from crosses between the ecotypes to test for associations between genomic regions
and traits distinguishing the Crab‐/Wave‐adapted ecotypes including size, shape,
shell thickness, and behavior. We show that most of these traits are influenced
by two previously detected inversion regions that are divergent between ecotypes.
We thus gain a better understanding of one important underlying mechanism responsible
for the rapid and repeated formation of ecotypes: divergent selection acting on
inversions. We also found that some inversions contributed to more than one trait
suggesting that they may contain several loci involved in adaptation, consistent
with the hypothesis that suppression of recombination within inversions facilitates
differentiation in the presence of gene flow.'
acknowledgement: 'We are very grateful to Irena Senčić for technical assistance and
to Michelle Kortyna and Sean Holland at the Center for Anchored Phylogenomics for
assistance with data collection. RKB was funded by the Natural Environment Research
Council and by the European Research Council. KJ was funded by the Swedish Research
Councils VR and Formas (Linnaeus Grant: 217‐2008‐1719). JL was funded by a studentship
from the Leverhulme Centre for Advanced Biological Modelling. AMW was funded by
the European Union''s Horizon 2020 research and innovation program under Marie Skłodowska‐Curie
Grant agreement no. 797747. RF was funded by the European Union''s Horizon 2020
research and innovation programme under the Marie Sklodowska‐Curie Grant agreement
No. 706376 and by FEDER Funds through the Operational Competitiveness Factors Program—COMPETE
and by National Funds through FCT—Foundation for Science and Technology within the
scope of the project “Hybrabbid” (PTDC/BIA‐EVL/30628/2017‐ POCI‐01‐0145‐FEDER‐030628).
We are grateful to other members of the Littorina research group for helpful discussions.
We thank Claire Mérot and an anonymous referee for insightful comments on an earlier
version. '
article_processing_charge: No
article_type: original
author:
- first_name: Eva L.
full_name: Koch, Eva L.
last_name: Koch
- first_name: Hernán E.
full_name: Morales, Hernán E.
last_name: Morales
- first_name: Jenny
full_name: Larsson, Jenny
last_name: Larsson
- 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: Rui
full_name: Faria, Rui
last_name: Faria
- first_name: Alan R.
full_name: Lemmon, Alan R.
last_name: Lemmon
- first_name: E. Moriarty
full_name: Lemmon, E. Moriarty
last_name: Lemmon
- first_name: Kerstin
full_name: Johannesson, Kerstin
last_name: Johannesson
- first_name: Roger K.
full_name: Butlin, Roger K.
last_name: Butlin
citation:
ama: Koch EL, Morales HE, Larsson J, et al. Genetic variation for adaptive traits
is associated with polymorphic inversions in Littorina saxatilis. Evolution
Letters. 2021;5(3):196-213. doi:10.1002/evl3.227
apa: Koch, E. L., Morales, H. E., Larsson, J., Westram, A. M., Faria, R., Lemmon,
A. R., … Butlin, R. K. (2021). Genetic variation for adaptive traits is associated
with polymorphic inversions in Littorina saxatilis. Evolution Letters.
Wiley. https://doi.org/10.1002/evl3.227
chicago: Koch, Eva L., Hernán E. Morales, Jenny Larsson, Anja M Westram, Rui Faria,
Alan R. Lemmon, E. Moriarty Lemmon, Kerstin Johannesson, and Roger K. Butlin.
“Genetic Variation for Adaptive Traits Is Associated with Polymorphic Inversions
in Littorina Saxatilis.” Evolution Letters. Wiley, 2021. https://doi.org/10.1002/evl3.227.
ieee: E. L. Koch et al., “Genetic variation for adaptive traits is associated
with polymorphic inversions in Littorina saxatilis,” Evolution Letters,
vol. 5, no. 3. Wiley, pp. 196–213, 2021.
ista: Koch EL, Morales HE, Larsson J, Westram AM, Faria R, Lemmon AR, Lemmon EM,
Johannesson K, Butlin RK. 2021. Genetic variation for adaptive traits is associated
with polymorphic inversions in Littorina saxatilis. Evolution Letters. 5(3), 196–213.
mla: Koch, Eva L., et al. “Genetic Variation for Adaptive Traits Is Associated with
Polymorphic Inversions in Littorina Saxatilis.” Evolution Letters, vol.
5, no. 3, Wiley, 2021, pp. 196–213, doi:10.1002/evl3.227.
short: E.L. Koch, H.E. Morales, J. Larsson, A.M. Westram, R. Faria, A.R. Lemmon,
E.M. Lemmon, K. Johannesson, R.K. Butlin, Evolution Letters 5 (2021) 196–213.
date_created: 2021-05-16T22:01:47Z
date_published: 2021-05-07T00:00:00Z
date_updated: 2023-08-08T13:34:08Z
day: '07'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1002/evl3.227
ec_funded: 1
external_id:
isi:
- '000647846200001'
file:
- access_level: open_access
checksum: 023b1608e311f0fda30593ba3d0a4e0b
content_type: application/pdf
creator: cchlebak
date_created: 2021-10-15T08:26:02Z
date_updated: 2021-10-15T08:26:02Z
file_id: '10142'
file_name: 2021_EvolutionLetters_Koch.pdf
file_size: 3021108
relation: main_file
success: 1
file_date_updated: 2021-10-15T08:26:02Z
has_accepted_license: '1'
intvolume: ' 5'
isi: 1
issue: '3'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: 196-213
project:
- _id: 265B41B8-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '797747'
name: Theoretical and empirical approaches to understanding Parallel Adaptation
publication: Evolution Letters
publication_identifier:
eissn:
- 2056-3744
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
record:
- id: '12987'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Genetic variation for adaptive traits is associated with polymorphic inversions
in Littorina saxatilis
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: 5
year: '2021'
...
---
_id: '9915'
abstract:
- lang: eng
text: 'The evolution of assortative mating is a key part of the speciation process.
Stronger assortment, or greater divergence in mating traits, between species pairs
with overlapping ranges is commonly observed, but possible causes of this pattern
of reproductive character displacement are difficult to distinguish. We use a
multidisciplinary approach to provide a rare example where it is possible to distinguish
among hypotheses concerning the evolution of reproductive character displacement.
We build on an earlier comparative analysis that illustrated a strong pattern
of greater divergence in penis form between pairs of sister species with overlapping
ranges than between allopatric sister-species pairs, in a large clade of marine
gastropods (Littorinidae). We investigate both assortative mating and divergence
in male genitalia in one of the sister-species pairs, discriminating among three
contrasting processes each of which can generate a pattern of reproductive character
displacement: reinforcement, reproductive interference and the Templeton effect.
We demonstrate reproductive character displacement in assortative mating, but
not in genital form between this pair of sister species and use demographic models
to distinguish among the different processes. Our results support a model with
no gene flow since secondary contact and thus favor reproductive interference
as the cause of reproductive character displacement for mate choice, rather than
reinforcement. High gene flow within species argues against the Templeton effect.
Secondary contact appears to have had little impact on genital divergence.'
acknowledgement: The authors express a special thanks to Dr Richard Willan at the
Museum and Art Gallery of the Northern Territory for guidance and support in the
field, and to Carole Smadja for reading and commenting on the manuscript. The authors
thank the Government of Western Australia Department of Parks and Wildlife (license
no. 009254) and Fishery Research Division (exemption no. 2262) for assistance with
permits. Khalid Belkhir modified the coalescent sampler msnsam for the specific
needs of this project and Martin Hirsch helped to set up the ABC pipeline and to
modify the summary statistic calculator mscalc. The authors are grateful to the
Crafoord Foundation for supporting this project. R.K.B., A.M.W., and L.D. were supported
by grants from the Natural Environment Research Council, R.K.B. and A.M.W. were
also supported by the European Research Council and R.K.B. and L.D. by the Leverhulme
Trust. M.M.R. was supported by Consejo Nacional de Ciencia y Tecnología and Secretaría
de Educación Pública, Mexico. G.B. was supported by the Centre for Animal Movement
Research (CAnMove) financed by a Linnaeus grant (No. 349-2007-8690) from the Swedish
Research Council and Lund University.
article_processing_charge: Yes
article_type: letter_note
author:
- first_name: Johan
full_name: Hollander, Johan
last_name: Hollander
- first_name: Mauricio
full_name: Montaño-Rendón, Mauricio
last_name: Montaño-Rendón
- first_name: Giuseppe
full_name: Bianco, Giuseppe
last_name: Bianco
- first_name: Xi
full_name: Yang, Xi
last_name: Yang
- 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: Ludovic
full_name: Duvaux, Ludovic
last_name: Duvaux
- first_name: David G.
full_name: Reid, David G.
last_name: Reid
- first_name: Roger K.
full_name: Butlin, Roger K.
last_name: Butlin
citation:
ama: Hollander J, Montaño-Rendón M, Bianco G, et al. Are assortative mating and
genital divergence driven by reinforcement? Evolution Letters. 2018;2(6):557-566.
doi:10.1002/evl3.85
apa: Hollander, J., Montaño-Rendón, M., Bianco, G., Yang, X., Westram, A. M., Duvaux,
L., … Butlin, R. K. (2018). Are assortative mating and genital divergence driven
by reinforcement? Evolution Letters. Wiley. https://doi.org/10.1002/evl3.85
chicago: Hollander, Johan, Mauricio Montaño-Rendón, Giuseppe Bianco, Xi Yang, Anja
M Westram, Ludovic Duvaux, David G. Reid, and Roger K. Butlin. “Are Assortative
Mating and Genital Divergence Driven by Reinforcement?” Evolution Letters.
Wiley, 2018. https://doi.org/10.1002/evl3.85.
ieee: J. Hollander et al., “Are assortative mating and genital divergence
driven by reinforcement?,” Evolution Letters, vol. 2, no. 6. Wiley, pp.
557–566, 2018.
ista: Hollander J, Montaño-Rendón M, Bianco G, Yang X, Westram AM, Duvaux L, Reid
DG, Butlin RK. 2018. Are assortative mating and genital divergence driven by reinforcement?
Evolution Letters. 2(6), 557–566.
mla: Hollander, Johan, et al. “Are Assortative Mating and Genital Divergence Driven
by Reinforcement?” Evolution Letters, vol. 2, no. 6, Wiley, 2018, pp. 557–66,
doi:10.1002/evl3.85.
short: J. Hollander, M. Montaño-Rendón, G. Bianco, X. Yang, A.M. Westram, L. Duvaux,
D.G. Reid, R.K. Butlin, Evolution Letters 2 (2018) 557–566.
date_created: 2021-08-16T07:30:00Z
date_published: 2018-12-13T00:00:00Z
date_updated: 2023-09-19T15:08:53Z
day: '13'
ddc:
- '570'
department:
- _id: BeVi
doi: 10.1002/evl3.85
external_id:
isi:
- '000452990000002'
pmid:
- '30564439'
file:
- access_level: open_access
checksum: 997a78ac41c809975ca69cbdea441f88
content_type: application/pdf
creator: asandaue
date_created: 2021-08-16T07:37:28Z
date_updated: 2021-08-16T07:37:28Z
file_id: '9916'
file_name: 2018_EvolutionLetters_Hollander.pdf
file_size: 584606
relation: main_file
success: 1
file_date_updated: 2021-08-16T07:37:28Z
has_accepted_license: '1'
intvolume: ' 2'
isi: 1
issue: '6'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: 557-566
pmid: 1
publication: Evolution Letters
publication_identifier:
eissn:
- 2056-3744
issn:
- ' 2056-3744'
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
record:
- id: '9929'
relation: research_data
status: public
status: public
title: Are assortative mating and genital divergence driven by reinforcement?
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 2
year: '2018'
...
---
_id: '9917'
abstract:
- lang: eng
text: Adaptive divergence and speciation may happen despite opposition by gene flow.
Identifying the genomic basis underlying divergence with gene flow is a major
task in evolutionary genomics. Most approaches (e.g., outlier scans) focus on
genomic regions of high differentiation. However, not all genomic architectures
potentially underlying divergence are expected to show extreme differentiation.
Here, we develop an approach that combines hybrid zone analysis (i.e., focuses
on spatial patterns of allele frequency change) with system-specific simulations
to identify loci inconsistent with neutral evolution. We apply this to a genome-wide
SNP set from an ideally suited study organism, the intertidal snail Littorina
saxatilis, which shows primary divergence between ecotypes associated with different
shore habitats. We detect many SNPs with clinal patterns, most of which are consistent
with neutrality. Among non-neutral SNPs, most are located within three large putative
inversions differentiating ecotypes. Many non-neutral SNPs show relatively low
levels of differentiation. We discuss potential reasons for this pattern, including
loose linkage to selected variants, polygenic adaptation and a component of balancing
selection within populations (which may be expected for inversions). Our work
is in line with theory predicting a role for inversions in divergence, and emphasizes
that genomic regions contributing to divergence may not always be accessible with
methods purely based on allele frequency differences. These conclusions call for
approaches that take spatial patterns of allele frequency change into account
in other systems.
acknowledgement: We are very grateful to people who helped with fieldwork, snail processing,
and DNA extractions, particularly Laura Brettell, Mårten Duvetorp, Juan Galindo,
Anne-Lise Liabot and Irena Senčić. We would also like to thank Magnus Alm Rosenblad
and Mats Töpel for their contribution to assembling the Littorina saxatilis genome,
Carl André, Pasi Rastas, and Romain Villoutreix for discussion, and two anonymous
reviewers for their helpful comments on the manuscript. We are grateful to RapidGenomics
for library preparation and sequencing. We thank the Natural Environment Research
Council, the European Research Council and the Swedish Research Councils VR and
Formas (Linnaeus grant to the Centre for Marine Evolutionary Biology and Tage Erlander
Guest Professorship) for funding. P.C. was funded by the University of Sheffield
Vice-chancellor's India scholarship. R.F. is funded by the European Union's Horizon
2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement
no. 706376. M. Raf. was supported by the Adlerbert Research Foundation.
article_processing_charge: Yes
article_type: letter_note
author:
- 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: Marina
full_name: Rafajlović, Marina
last_name: Rafajlović
- first_name: Pragya
full_name: Chaube, Pragya
last_name: Chaube
- first_name: Rui
full_name: Faria, Rui
last_name: Faria
- first_name: Tomas
full_name: Larsson, Tomas
last_name: Larsson
- first_name: Marina
full_name: Panova, Marina
last_name: Panova
- first_name: Mark
full_name: Ravinet, Mark
last_name: Ravinet
- first_name: Anders
full_name: Blomberg, Anders
last_name: Blomberg
- first_name: Bernhard
full_name: Mehlig, Bernhard
last_name: Mehlig
- first_name: Kerstin
full_name: Johannesson, Kerstin
last_name: Johannesson
- first_name: Roger
full_name: Butlin, Roger
last_name: Butlin
citation:
ama: 'Westram AM, Rafajlović M, Chaube P, et al. Clines on the seashore: The genomic
architecture underlying rapid divergence in the face of gene flow. Evolution
Letters. 2018;2(4):297-309. doi:10.1002/evl3.74'
apa: 'Westram, A. M., Rafajlović, M., Chaube, P., Faria, R., Larsson, T., Panova,
M., … Butlin, R. (2018). Clines on the seashore: The genomic architecture underlying
rapid divergence in the face of gene flow. Evolution Letters. Wiley. https://doi.org/10.1002/evl3.74'
chicago: 'Westram, Anja M, Marina Rafajlović, Pragya Chaube, Rui Faria, Tomas Larsson,
Marina Panova, Mark Ravinet, et al. “Clines on the Seashore: The Genomic Architecture
Underlying Rapid Divergence in the Face of Gene Flow.” Evolution Letters.
Wiley, 2018. https://doi.org/10.1002/evl3.74.'
ieee: 'A. M. Westram et al., “Clines on the seashore: The genomic architecture
underlying rapid divergence in the face of gene flow,” Evolution Letters,
vol. 2, no. 4. Wiley, pp. 297–309, 2018.'
ista: 'Westram AM, Rafajlović M, Chaube P, Faria R, Larsson T, Panova M, Ravinet
M, Blomberg A, Mehlig B, Johannesson K, Butlin R. 2018. Clines on the seashore:
The genomic architecture underlying rapid divergence in the face of gene flow.
Evolution Letters. 2(4), 297–309.'
mla: 'Westram, Anja M., et al. “Clines on the Seashore: The Genomic Architecture
Underlying Rapid Divergence in the Face of Gene Flow.” Evolution Letters,
vol. 2, no. 4, Wiley, 2018, pp. 297–309, doi:10.1002/evl3.74.'
short: A.M. Westram, M. Rafajlović, P. Chaube, R. Faria, T. Larsson, M. Panova,
M. Ravinet, A. Blomberg, B. Mehlig, K. Johannesson, R. Butlin, Evolution Letters
2 (2018) 297–309.
date_created: 2021-08-16T07:45:38Z
date_published: 2018-08-20T00:00:00Z
date_updated: 2023-09-19T15:08:25Z
day: '20'
ddc:
- '570'
department:
- _id: BeVi
doi: 10.1002/evl3.74
external_id:
isi:
- '000446774400004'
pmid:
- '30283683'
file:
- access_level: open_access
checksum: 8524e72507d521416be3f8ccfcd5e3f5
content_type: application/pdf
creator: asandaue
date_created: 2021-08-16T07:48:03Z
date_updated: 2021-08-16T07:48:03Z
file_id: '9918'
file_name: 2018_EvolutionLetters_Westram.pdf
file_size: 764299
relation: main_file
success: 1
file_date_updated: 2021-08-16T07:48:03Z
has_accepted_license: '1'
intvolume: ' 2'
isi: 1
issue: '4'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: 297-309
pmid: 1
publication: Evolution Letters
publication_identifier:
eissn:
- 2056-3744
issn:
- 2056-3744
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
record:
- id: '9930'
relation: research_data
status: public
status: public
title: 'Clines on the seashore: The genomic architecture underlying rapid divergence
in the face of gene flow'
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 2
year: '2018'
...