--- _id: '8168' abstract: - lang: eng text: Speciation, that is, the evolution of reproductive barriers eventually leading to complete isolation, is a crucial process generating biodiversity. Recent work has contributed much to our understanding of how reproductive barriers begin to evolve, and how they are maintained in the face of gene flow. However, little is known about the transition from partial to strong reproductive isolation (RI) and the completion of speciation. We argue that the evolution of strong RI is likely to involve different processes, or new interactions among processes, compared with the evolution of the first reproductive barriers. Transition to strong RI may be brought about by changing external conditions, for example, following secondary contact. However, the increasing levels of RI themselves create opportunities for new barriers to evolve and, and interaction or coupling among barriers. These changing processes may depend on genomic architecture and leave detectable signals in the genome. We outline outstanding questions and suggest more theoretical and empirical work, considering both patterns and processes associated with strong RI, is needed to understand how speciation is completed. article_number: '20190528' article_processing_charge: No article_type: original author: - first_name: Jonna full_name: Kulmuni, Jonna last_name: Kulmuni - first_name: Roger K. full_name: Butlin, Roger K. last_name: Butlin - first_name: Kay full_name: Lucek, Kay last_name: Lucek - first_name: Vincent full_name: Savolainen, Vincent last_name: Savolainen - 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: 'Kulmuni J, Butlin RK, Lucek K, Savolainen V, Westram AM. Towards the completion of speciation: The evolution of reproductive isolation beyond the first barriers. Philosophical Transactions of the Royal Society Series B: Biological sciences. 2020;375(1806). doi:10.1098/rstb.2019.0528' apa: 'Kulmuni, J., Butlin, R. K., Lucek, K., Savolainen, V., & Westram, A. M. (2020). Towards the completion of speciation: The evolution of reproductive isolation beyond the first barriers. Philosophical Transactions of the Royal Society. Series B: Biological Sciences. The Royal Society. https://doi.org/10.1098/rstb.2019.0528' chicago: 'Kulmuni, Jonna, Roger K. Butlin, Kay Lucek, Vincent Savolainen, and Anja M Westram. “Towards the Completion of Speciation: The Evolution of Reproductive Isolation beyond the First Barriers.” Philosophical Transactions of the Royal Society. Series B: Biological Sciences. The Royal Society, 2020. https://doi.org/10.1098/rstb.2019.0528.' ieee: 'J. Kulmuni, R. K. Butlin, K. Lucek, V. Savolainen, and A. M. Westram, “Towards the completion of speciation: The evolution of reproductive isolation beyond the first barriers,” Philosophical Transactions of the Royal Society. Series B: Biological sciences, vol. 375, no. 1806. The Royal Society, 2020.' ista: 'Kulmuni J, Butlin RK, Lucek K, Savolainen V, Westram AM. 2020. Towards the completion of speciation: The evolution of reproductive isolation beyond the first barriers. Philosophical Transactions of the Royal Society. Series B: Biological sciences. 375(1806), 20190528.' mla: 'Kulmuni, Jonna, et al. “Towards the Completion of Speciation: The Evolution of Reproductive Isolation beyond the First Barriers.” Philosophical Transactions of the Royal Society. Series B: Biological Sciences, vol. 375, no. 1806, 20190528, The Royal Society, 2020, doi:10.1098/rstb.2019.0528.' short: 'J. Kulmuni, R.K. Butlin, K. Lucek, V. Savolainen, A.M. Westram, Philosophical Transactions of the Royal Society. Series B: Biological Sciences 375 (2020).' date_created: 2020-07-26T22:01:01Z date_published: 2020-07-12T00:00:00Z date_updated: 2023-08-22T08:21:31Z day: '12' department: - _id: NiBa doi: 10.1098/rstb.2019.0528 ec_funded: 1 external_id: isi: - '000552662100001' pmid: - '32654637' intvolume: ' 375' isi: 1 issue: '1806' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1098/rstb.2019.0528 month: '07' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 265B41B8-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '797747' name: Theoretical and empirical approaches to understanding Parallel Adaptation publication: 'Philosophical Transactions of the Royal Society. Series B: Biological sciences' publication_identifier: eissn: - 1471-2970 issn: - 0962-8436 publication_status: published publisher: The Royal Society quality_controlled: '1' scopus_import: '1' status: public title: 'Towards the completion of speciation: The evolution of reproductive isolation beyond the first barriers' type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 375 year: '2020' ...