--- _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 acknowledgement: We thank S. O'Neill, C. Simmons, and the World Mosquito Project for providing access to unpublished data.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 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: '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' ... --- _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' ...