The genetics of adaptation in freshwater Eurasian shad ( Alosa ).

Autor: Sabatino SJ; CIBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos Universidade do Porto Vairão Portugal.; BIOPOLIS - Program in Genomics, Biodiversity and Land Planning CIBIO Vairão Portugal.; Departamento de Biologia Faculdade de Ciências Universidade do Porto Porto Portugal., Pereira P; CIBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos Universidade do Porto Vairão Portugal.; BIOPOLIS - Program in Genomics, Biodiversity and Land Planning CIBIO Vairão Portugal.; Departamento de Biologia Faculdade de Ciências Universidade do Porto Porto Portugal., Carneiro M; CIBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos Universidade do Porto Vairão Portugal.; BIOPOLIS - Program in Genomics, Biodiversity and Land Planning CIBIO Vairão Portugal.; Departamento de Biologia Faculdade de Ciências Universidade do Porto Porto Portugal., Dilytė J; CIBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos Universidade do Porto Vairão Portugal.; BIOPOLIS - Program in Genomics, Biodiversity and Land Planning CIBIO Vairão Portugal., Archer JP; CIBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos Universidade do Porto Vairão Portugal.; BIOPOLIS - Program in Genomics, Biodiversity and Land Planning CIBIO Vairão Portugal., Munoz A; CIBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos Universidade do Porto Vairão Portugal.; BIOPOLIS - Program in Genomics, Biodiversity and Land Planning CIBIO Vairão Portugal., Nonnis-Marzano F; Departamento de Biologia Faculdade de Ciências Universidade do Porto Porto Portugal.; Department of Chemistry, Life Sciences and Environmental Sustainability Università di Parma Parma Italy., Murias A; CIBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos Universidade do Porto Vairão Portugal.; BIOPOLIS - Program in Genomics, Biodiversity and Land Planning CIBIO Vairão Portugal.; Departamento de Biologia Faculdade de Ciências Universidade do Porto Porto Portugal.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2022 May 24; Vol. 12 (5), pp. e8908. Date of Electronic Publication: 2022 May 24 (Print Publication: 2022).
DOI: 10.1002/ece3.8908
Abstrakt: Studying the genetics of phenotypic convergence can yield important insights into adaptive evolution. Here, we conducted a comparative genomic study of four lineages (species and subspecies) of anadromous shad ( Alosa ) that have independently evolved life cycles entirely completed in freshwater. Three naturally diverged ( A .  fallax lacustris , A .  f . killarnensis , and A .  macedonica ), and the fourth ( A .  alosa ) was artificially landlocked during the last century. To conduct this analysis, we assembled and annotated a draft of the A .  alosa genome and generated whole-genome sequencing for 16 anadromous and freshwater populations of shad. Widespread evidence for parallel genetic changes in freshwater populations within lineages was found. In freshwater A .  alosa , which have only been diverging for tens of generations, this shows that parallel adaptive evolution can rapidly occur. However, parallel genetic changes across lineages were comparatively rare. The degree of genetic parallelism was not strongly related to the number of shared polymorphisms between lineages, thus suggesting that other factors such as divergence among ancestral populations or environmental variation may influence genetic parallelism across these lineages. These overall patterns were exemplified by genetic differentiation involving a paralog of ATPase - α1 that appears to be under selection in just two of the more distantly related lineages studied, A .  f .  lacustris and A .  alosa . Our findings provide insights into the genetic architecture of adaptation and parallel evolution along a continuum of population divergence.
Competing Interests: All authors declared that there is no conflict of interest.
(© 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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