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Johannesson K, Faria R, Le Moan A, Rafajlović M, Westram AM, Butlin RK, Stankowski S. Diverse pathways to speciation revealed by marine snails. Trends Genet 2024; 40:337-351. [PMID: 38395682 DOI: 10.1016/j.tig.2024.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 01/06/2024] [Accepted: 01/10/2024] [Indexed: 02/25/2024]
Abstract
Speciation is a key evolutionary process that is not yet fully understood. Combining population genomic and ecological data from multiple diverging pairs of marine snails (Littorina) supports the search for speciation mechanisms. Placing pairs on a one-dimensional speciation continuum, from undifferentiated populations to species, obscured the complexity of speciation. Adding multiple axes helped to describe either speciation routes or reproductive isolation in the snails. Divergent ecological selection repeatedly generated barriers between ecotypes, but appeared less important in completing speciation while genetic incompatibilities played a key role. Chromosomal inversions contributed to genomic barriers, but with variable impact. A multidimensional (hypercube) approach supported framing of questions and identification of knowledge gaps and can be useful to understand speciation in many other systems.
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Affiliation(s)
- Kerstin Johannesson
- Department of Marine Sciences, University of Gothenburg, Tjärnö Marine Laboratory, SE 45296 Strömstad, Sweden; The Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden.
| | - Rui Faria
- The Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden; CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO, Laboratório Associado, Universidade do Porto, Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal
| | - Alan Le Moan
- The Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden; CNRS & Sorbonne Université, Station Biologique de Roscoff, Roscoff, France
| | - Marina Rafajlović
- The Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden; Department of Marine Sciences, University of Gothenburg, SE 41390 Gothenburg, Sweden; Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | - Anja Marie Westram
- Department of Marine Sciences, University of Gothenburg, Tjärnö Marine Laboratory, SE 45296 Strömstad, Sweden; The Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden; Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | - Roger K Butlin
- Department of Marine Sciences, University of Gothenburg, Tjärnö Marine Laboratory, SE 45296 Strömstad, Sweden; The Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden; Ecology and Evolutionary Biology, School of Biosciences, The University of Sheffield, Sheffield, UK
| | - Sean Stankowski
- The Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, Gothenburg, Sweden; Institute of Science and Technology Austria, Klosterneuburg, Austria; Department of Ecology and Evolution, University of Sussex, Brighton, UK
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Westram AM, Stankowski S, Surendranadh P, Barton NH. Reproductive isolation, speciation, and the value of disagreement: A reply to the commentaries on 'What is reproductive isolation?'. J Evol Biol 2022; 35:1200-1205. [PMID: 36063160 PMCID: PMC9542782 DOI: 10.1111/jeb.14082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 08/05/2022] [Indexed: 01/06/2023]
Affiliation(s)
- Anja M Westram
- Insitute of Science and Technology Austria (ISTA), Klosterneuburg, Austria.,Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | - Sean Stankowski
- Insitute of Science and Technology Austria (ISTA), Klosterneuburg, Austria
| | | | - Nicholas H Barton
- Insitute of Science and Technology Austria (ISTA), Klosterneuburg, Austria
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