--- _id: '14833' abstract: - lang: eng text: Understanding the factors that have shaped the current distributions and diversity of species is a central and longstanding aim of evolutionary biology. The recent inclusion of genomic data into phylogeographic studies has dramatically improved our understanding in organisms where evolutionary relationships have been challenging to infer. We used whole-genome sequences to study the phylogeography of the intertidal snail Littorina saxatilis, which has successfully colonized and diversified across a broad range of coastal environments in the Northern Hemisphere amid repeated cycles of glaciation. Building on past studies based on short DNA sequences, we used genome-wide data to provide a clearer picture of the relationships among samples spanning most of the species natural range. Our results confirm the trans-Atlantic colonization of North America from Europe, and have allowed us to identify rough locations of glacial refugia and to infer likely routes of colonization within Europe. We also investigated the signals in different datasets to account for the effects of genomic architecture and non-neutral evolution, which provides new insights about diversification of four ecotypes of L. saxatilis (the crab, wave, barnacle, and brackish ecotypes) at different spatial scales. Overall, we provide a much clearer picture of the biogeography of L. saxatilis, providing a foundation for more detailed phylogenomic and demographic studies. acknowledgement: Isobel Eyres, Richard Turney, Graciela Sotelo, Jenny Larson, and Stéphane Loisel helped with the collection and processing of samples. Petri Kemppainen kindly provided samples from Trondheim Fjord. Mark Dunning helped with the development of bioinformatic pipelines. The analysis of genomic data was conducted on the University of Sheffield high-performance computing cluster, ShARC. Funding was provided by the Natural Environment Research Council (NERC) and the European Research Council (ERC). J.G. was funded by a Juntas Industriales y Navales (JIN) project (Ministerio de Ciencia, Innovación y Universidades, code RTI2018-101274-J-I00). article_number: kzad002 article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Sean full_name: Stankowski, Sean id: 43161670-5719-11EA-8025-FABC3DDC885E last_name: Stankowski - first_name: Zuzanna B full_name: Zagrodzka, Zuzanna B last_name: Zagrodzka - first_name: Juan full_name: Galindo, Juan last_name: Galindo - first_name: Mauricio full_name: Montaño-Rendón, Mauricio last_name: Montaño-Rendón - first_name: Rui full_name: Faria, Rui last_name: Faria - first_name: Natalia full_name: Mikhailova, Natalia last_name: Mikhailova - first_name: April M H full_name: Blakeslee, April M H last_name: Blakeslee - first_name: Einar full_name: Arnason, Einar last_name: Arnason - first_name: Thomas full_name: Broquet, Thomas last_name: Broquet - first_name: Hernán E full_name: Morales, Hernán E last_name: Morales - first_name: John W full_name: Grahame, John W last_name: Grahame - 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: Stankowski S, Zagrodzka ZB, Galindo J, et al. Whole-genome phylogeography of the intertidal snail Littorina saxatilis. Evolutionary Journal of the Linnean Society. 2023;2(1). doi:10.1093/evolinnean/kzad002 apa: Stankowski, S., Zagrodzka, Z. B., Galindo, J., Montaño-Rendón, M., Faria, R., Mikhailova, N., … Butlin, R. K. (2023). Whole-genome phylogeography of the intertidal snail Littorina saxatilis. Evolutionary Journal of the Linnean Society. Oxford University Press. https://doi.org/10.1093/evolinnean/kzad002 chicago: Stankowski, Sean, Zuzanna B Zagrodzka, Juan Galindo, Mauricio Montaño-Rendón, Rui Faria, Natalia Mikhailova, April M H Blakeslee, et al. “Whole-Genome Phylogeography of the Intertidal Snail Littorina Saxatilis.” Evolutionary Journal of the Linnean Society. Oxford University Press, 2023. https://doi.org/10.1093/evolinnean/kzad002. ieee: S. Stankowski et al., “Whole-genome phylogeography of the intertidal snail Littorina saxatilis,” Evolutionary Journal of the Linnean Society, vol. 2, no. 1. Oxford University Press, 2023. ista: Stankowski S, Zagrodzka ZB, Galindo J, Montaño-Rendón M, Faria R, Mikhailova N, Blakeslee AMH, Arnason E, Broquet T, Morales HE, Grahame JW, Westram AM, Johannesson K, Butlin RK. 2023. Whole-genome phylogeography of the intertidal snail Littorina saxatilis. Evolutionary Journal of the Linnean Society. 2(1), kzad002. mla: Stankowski, Sean, et al. “Whole-Genome Phylogeography of the Intertidal Snail Littorina Saxatilis.” Evolutionary Journal of the Linnean Society, vol. 2, no. 1, kzad002, Oxford University Press, 2023, doi:10.1093/evolinnean/kzad002. short: S. Stankowski, Z.B. Zagrodzka, J. Galindo, M. Montaño-Rendón, R. Faria, N. Mikhailova, A.M.H. Blakeslee, E. Arnason, T. Broquet, H.E. Morales, J.W. Grahame, A.M. Westram, K. Johannesson, R.K. Butlin, Evolutionary Journal of the Linnean Society 2 (2023). date_created: 2024-01-18T07:54:10Z date_published: 2023-08-17T00:00:00Z date_updated: 2024-01-23T08:13:43Z day: '17' ddc: - '570' department: - _id: NiBa doi: 10.1093/evolinnean/kzad002 file: - access_level: open_access checksum: ba6f9102d3a9fe6631c4fa398c5e4313 content_type: application/pdf creator: dernst date_created: 2024-01-23T08:10:00Z date_updated: 2024-01-23T08:10:00Z file_id: '14875' file_name: 2023_EvolJourLinneanSociety_Stankowski.pdf file_size: 3408944 relation: main_file success: 1 file_date_updated: 2024-01-23T08:10:00Z has_accepted_license: '1' intvolume: ' 2' issue: '1' language: - iso: eng license: https://creativecommons.org/licenses/by-nc/4.0/ month: '08' oa: 1 oa_version: Published Version publication: Evolutionary Journal of the Linnean Society publication_identifier: eissn: - 2752-938X publication_status: published publisher: Oxford University Press quality_controlled: '1' status: public title: Whole-genome phylogeography of the intertidal snail Littorina saxatilis tmp: image: /images/cc_by_nc.png legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) short: CC BY-NC (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2 year: '2023' ... --- _id: '14732' abstract: - lang: eng text: 'Fragmented landscapes pose a significant threat to the persistence of species as they are highly susceptible to heightened risk of extinction due to the combined effects of genetic and demographic factors such as genetic drift and demographic stochasticity. This paper explores the intricate interplay between genetic load and extinction risk within metapopulations with a focus on understanding the impact of eco-evolutionary feedback mechanisms. We distinguish between two models of selection: soft selection, characterised by subpopulations maintaining carrying capacity despite load, and hard selection, where load can significantly affect population size. Within the soft selection framework, we investigate the impact of gene flow on genetic load at a single locus, while also considering the effect of selection strength and dominance coefficient. We subsequently build on this to examine how gene flow influences both population size and load under hard selection as well as identify critical thresholds for metapopulation persistence. Our analysis employs the diffusion, semi-deterministic and effective migration approximations. Our findings reveal that under soft selection, even modest levels of migration can significantly alleviate the burden of load. In sharp contrast, with hard selection, a much higher degree of gene flow is required to mitigate load and prevent the collapse of the metapopulation. Overall, this study sheds light into the crucial role migration plays in shaping the dynamics of genetic load and extinction risk in fragmented landscapes, offering valuable insights for conservation strategies and the preservation of diversity in a changing world.' article_processing_charge: No author: - first_name: Oluwafunmilola O full_name: Olusanya, Oluwafunmilola O id: 41AD96DC-F248-11E8-B48F-1D18A9856A87 last_name: Olusanya orcid: 0000-0003-1971-8314 - first_name: Kseniia full_name: Khudiakova, Kseniia id: 4E6DC800-AE37-11E9-AC72-31CAE5697425 last_name: Khudiakova orcid: 0000-0002-6246-1465 - first_name: Himani full_name: Sachdeva, Himani id: 42377A0A-F248-11E8-B48F-1D18A9856A87 last_name: Sachdeva citation: ama: Olusanya OO, Khudiakova K, Sachdeva H. Genetic load, eco-evolutionary feedback and extinction in a metapopulation. bioRxiv. doi:10.1101/2023.12.02.569702 apa: Olusanya, O. O., Khudiakova, K., & Sachdeva, H. (n.d.). Genetic load, eco-evolutionary feedback and extinction in a metapopulation. bioRxiv. https://doi.org/10.1101/2023.12.02.569702 chicago: Olusanya, Oluwafunmilola O, Kseniia Khudiakova, and Himani Sachdeva. “Genetic Load, Eco-Evolutionary Feedback and Extinction in a Metapopulation.” BioRxiv, n.d. https://doi.org/10.1101/2023.12.02.569702. ieee: O. O. Olusanya, K. Khudiakova, and H. Sachdeva, “Genetic load, eco-evolutionary feedback and extinction in a metapopulation,” bioRxiv. . ista: Olusanya OO, Khudiakova K, Sachdeva H. Genetic load, eco-evolutionary feedback and extinction in a metapopulation. bioRxiv, 10.1101/2023.12.02.569702. mla: Olusanya, Oluwafunmilola O., et al. “Genetic Load, Eco-Evolutionary Feedback and Extinction in a Metapopulation.” BioRxiv, doi:10.1101/2023.12.02.569702. short: O.O. Olusanya, K. Khudiakova, H. Sachdeva, BioRxiv (n.d.). date_created: 2024-01-04T09:35:54Z date_published: 2023-12-04T00:00:00Z date_updated: 2024-01-26T12:00:53Z day: '04' department: - _id: NiBa - _id: JaMa doi: 10.1101/2023.12.02.569702 language: - iso: eng license: https://creativecommons.org/licenses/by-nc-nd/4.0/ main_file_link: - open_access: '1' url: https://www.biorxiv.org/content/10.1101/2023.12.02.569702v1 month: '12' oa: 1 oa_version: Preprint project: - _id: c08d3278-5a5b-11eb-8a69-fdb09b55f4b8 grant_number: P32896 name: Causes and consequences of population fragmentation - _id: 34d33d68-11ca-11ed-8bc3-ec13763c0ca8 grant_number: '26293' name: The impact of deleterious mutations on small populations - _id: 34c872fe-11ca-11ed-8bc3-8534b82131e6 grant_number: '26380' name: Polygenic Adaptation in a Metapopulation publication: bioRxiv publication_status: submitted related_material: record: - id: '14711' relation: dissertation_contains status: public status: public title: Genetic load, eco-evolutionary feedback and extinction in a metapopulation tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: preprint user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2023' ... --- _id: '14812' abstract: - lang: eng text: This repository contains the code and VCF files needed to conduct the analyses in our MS. Each folder contains a readMe document explaining the nature of each file and dataset and the results and analyses that they relate to. The same anlaysis code (but not VCF files) is also available at https://github.com/seanstankowski/Littorina_reproductive_mode article_processing_charge: No author: - first_name: Sean full_name: Stankowski, Sean id: 43161670-5719-11EA-8025-FABC3DDC885E last_name: Stankowski citation: ama: 'Stankowski S. Data and code for: The genetic architecture of a recent transition to live-bearing in marine snails. 2023. doi:10.5281/ZENODO.8318995' apa: 'Stankowski, S. (2023). Data and code for: The genetic architecture of a recent transition to live-bearing in marine snails. Zenodo. https://doi.org/10.5281/ZENODO.8318995' chicago: 'Stankowski, Sean. “Data and Code for: The Genetic Architecture of a Recent Transition to Live-Bearing in Marine Snails.” Zenodo, 2023. https://doi.org/10.5281/ZENODO.8318995.' ieee: 'S. Stankowski, “Data and code for: The genetic architecture of a recent transition to live-bearing in marine snails.” Zenodo, 2023.' ista: 'Stankowski S. 2023. Data and code for: The genetic architecture of a recent transition to live-bearing in marine snails, Zenodo, 10.5281/ZENODO.8318995.' mla: 'Stankowski, Sean. Data and Code for: The Genetic Architecture of a Recent Transition to Live-Bearing in Marine Snails. Zenodo, 2023, doi:10.5281/ZENODO.8318995.' short: S. Stankowski, (2023). contributor: - first_name: Zusanna last_name: Zagrodzka - first_name: Martin last_name: Garlovsky - first_name: Arka id: 6AAB2240-CA9A-11E9-9C1A-D9D1E5697425 last_name: Pal orcid: 0000-0002-4530-8469 - first_name: Daria id: 428A94B0-F248-11E8-B48F-1D18A9856A87 last_name: Shipilina orcid: 0000-0002-1145-9226 - first_name: Diego Fernando id: ae681a14-dc74-11ea-a0a7-c6ef18161701 last_name: Garcia Castillo - first_name: Hila id: d6ab5470-2fb3-11ed-8633-986a9b84edac last_name: Lifchitz - first_name: Alan last_name: Le Moan - first_name: Erica last_name: Leder - first_name: James last_name: Reeve - first_name: Kerstin last_name: Johannesson - first_name: Anja M id: 3C147470-F248-11E8-B48F-1D18A9856A87 last_name: Westram orcid: 0000-0003-1050-4969 - first_name: Roger last_name: Butlin date_created: 2024-01-16T10:23:01Z date_published: 2023-09-05T00:00:00Z date_updated: 2024-03-05T09:35:25Z day: '05' ddc: - '570' department: - _id: NiBa doi: 10.5281/ZENODO.8318995 has_accepted_license: '1' license: https://creativecommons.org/licenses/by/4.0/ main_file_link: - open_access: '1' url: https://doi.org/10.5281/zenodo.8318995 month: '09' oa: 1 oa_version: Published Version publisher: Zenodo related_material: record: - id: '14796' relation: used_in_publication status: public status: public title: 'Data and code for: The genetic architecture of a recent transition to live-bearing in marine snails' 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: research_data_reference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2023' ... --- _id: '12800' abstract: - lang: eng text: 'The evolutionary processes that brought about today’s plethora of living species and the many billions more ancient ones all underlie biology. Evolutionary pathways are neither directed nor deterministic, but rather an interplay between selection, migration, mutation, genetic drift and other environmental factors. Hybrid zones, as natural crossing experiments, offer a great opportunity to use cline analysis to deduce different evolutionary processes - for example, selection strength. Theoretical cline models, largely assuming uniform distribution of individuals, often lack the capability of incorporating population structure. Since in reality organisms mostly live in patchy distributions and their dispersal is hardly ever Gaussian, it is necessary to unravel the effect of these different elements of population structure on cline parameters and shape. In this thesis, I develop a simulation inspired by the A. majus hybrid zone of a single selected locus under frequency dependent selection. This simulation enables us to untangle the effects of different elements of population structure as for example a low-density center and long-range dispersal. This thesis is therefore a first step towards theoretically untangling the effects of different elements of population structure on cline parameters and shape. ' alternative_title: - ISTA Master's Thesis article_processing_charge: No author: - first_name: Mara full_name: Julseth, Mara id: 1cf464b2-dc7d-11ea-9b2f-f9b1aa9417d1 last_name: Julseth citation: ama: Julseth M. The effect of local population structure on genetic variation at selected loci in the A. majus hybrid zone. 2023. doi:10.15479/at:ista:12800 apa: Julseth, M. (2023). The effect of local population structure on genetic variation at selected loci in the A. majus hybrid zone. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:12800 chicago: Julseth, Mara. “The Effect of Local Population Structure on Genetic Variation at Selected Loci in the A. Majus Hybrid Zone.” Institute of Science and Technology Austria, 2023. https://doi.org/10.15479/at:ista:12800. ieee: M. Julseth, “The effect of local population structure on genetic variation at selected loci in the A. majus hybrid zone,” Institute of Science and Technology Austria, 2023. ista: Julseth M. 2023. The effect of local population structure on genetic variation at selected loci in the A. majus hybrid zone. Institute of Science and Technology Austria. mla: Julseth, Mara. The Effect of Local Population Structure on Genetic Variation at Selected Loci in the A. Majus Hybrid Zone. Institute of Science and Technology Austria, 2023, doi:10.15479/at:ista:12800. short: M. Julseth, The Effect of Local Population Structure on Genetic Variation at Selected Loci in the A. Majus Hybrid Zone, Institute of Science and Technology Austria, 2023. date_created: 2023-04-04T18:57:11Z date_published: 2023-04-05T00:00:00Z date_updated: 2023-06-02T22:30:05Z day: '05' ddc: - '576' degree_awarded: MS department: - _id: GradSch - _id: NiBa doi: 10.15479/at:ista:12800 file: - access_level: closed checksum: b76cf6d69f2093d8248f6a3f9d4654a4 content_type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet creator: mjulseth date_created: 2023-04-06T06:09:40Z date_updated: 2023-06-02T22:30:04Z embargo_to: open_access file_id: '12805' file_name: Dispersaldata.xlsx file_size: 52795 relation: supplementary_material - access_level: open_access checksum: 5a13b6d204371572e249f03795bc0d04 content_type: application/vnd.wolfram.nb creator: mjulseth date_created: 2023-04-06T06:11:27Z date_updated: 2023-06-02T22:30:04Z embargo: 2023-06-01 file_id: '12806' file_name: 2023_MSc_ThesisMaraJulseth_Notebook.nb file_size: 787239 relation: supplementary_material - access_level: closed checksum: c3ec842839ed1e66bf2618ae33047df8 content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document creator: mjulseth date_created: 2023-04-06T08:26:12Z date_updated: 2023-06-02T22:30:04Z embargo_to: open_access file_id: '12812' file_name: ThesisMaraJulseth_04_23.docx file_size: 1061763 relation: source_file - access_level: open_access checksum: 3132cc998fbe3ae2a3a83c2a69367f37 content_type: application/pdf creator: mjulseth date_created: 2023-04-06T08:26:37Z date_updated: 2023-06-02T22:30:04Z embargo: 2023-06-01 file_id: '12813' file_name: ThesisMaraJulseth_04_23.pdf file_size: 1741364 relation: main_file file_date_updated: 2023-06-02T22:30:04Z has_accepted_license: '1' language: - iso: eng month: '04' oa: 1 oa_version: Published Version page: '21' publication_identifier: issn: - 2791-4585 publication_status: published publisher: Institute of Science and Technology Austria status: public supervisor: - first_name: Nicholas H full_name: Barton, Nicholas H id: 4880FE40-F248-11E8-B48F-1D18A9856A87 last_name: Barton orcid: 0000-0002-8548-5240 title: The effect of local population structure on genetic variation at selected loci in the A. majus hybrid zone type: dissertation user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2023' ... --- _id: '11702' abstract: - lang: eng text: When Mendel’s work was rediscovered in 1900, and extended to establish classical genetics, it was initially seen in opposition to Darwin’s theory of evolution by natural selection on continuous variation, as represented by the biometric research program that was the foundation of quantitative genetics. As Fisher, Haldane, and Wright established a century ago, Mendelian inheritance is exactly what is needed for natural selection to work efficiently. Yet, the synthesis remains unfinished. We do not understand why sexual reproduction and a fair meiosis predominate in eukaryotes, or how far these are responsible for their diversity and complexity. Moreover, although quantitative geneticists have long known that adaptive variation is highly polygenic, and that this is essential for efficient selection, this is only now becoming appreciated by molecular biologists—and we still do not have a good framework for understanding polygenic variation or diffuse function. acknowledgement: I thank Laura Hayward, Jitka Polechova, and Anja Westram for discussions and comments. article_number: e2122147119 article_processing_charge: No article_type: original author: - 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: Barton NH. The “New Synthesis.” Proceedings of the National Academy of Sciences of the United States of America. 2022;119(30). doi:10.1073/pnas.2122147119 apa: Barton, N. H. (2022). The “New Synthesis.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2122147119 chicago: Barton, Nicholas H. “The ‘New Synthesis.’” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2122147119. ieee: N. H. Barton, “The ‘New Synthesis,’” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 30. Proceedings of the National Academy of Sciences, 2022. ista: Barton NH. 2022. The ‘New Synthesis’. Proceedings of the National Academy of Sciences of the United States of America. 119(30), e2122147119. mla: Barton, Nicholas H. “The ‘New Synthesis.’” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 30, e2122147119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2122147119. short: N.H. Barton, Proceedings of the National Academy of Sciences of the United States of America 119 (2022). date_created: 2022-07-31T22:01:47Z date_published: 2022-07-18T00:00:00Z date_updated: 2022-08-01T11:00:25Z day: '18' ddc: - '570' department: - _id: NiBa doi: 10.1073/pnas.2122147119 external_id: pmid: - '35858408' file: - access_level: open_access checksum: 06c866196a8957f0c37b8a121771c885 content_type: application/pdf creator: dernst date_created: 2022-08-01T10:58:28Z date_updated: 2022-08-01T10:58:28Z file_id: '11716' file_name: 2022_PNAS_Barton.pdf file_size: 848511 relation: main_file success: 1 file_date_updated: 2022-08-01T10:58:28Z has_accepted_license: '1' intvolume: ' 119' issue: '30' language: - iso: eng month: '07' oa: 1 oa_version: Published Version pmid: 1 publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: The "New Synthesis" 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: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 119 year: '2022' ...