A conserved haplotype controls parallel adaptation in geographically distant salmonid populations
Open Access
- 11 October 2011
- journal article
- research article
- Published by Wiley in Molecular Ecology
- Vol. 21 (2), 237-249
- https://doi.org/10.1111/j.1365-294x.2011.05305.x
Abstract
Salmonid fishes exhibit extensive local adaptations owing to abundant environmental variation and precise natal homing. This extensive local adaptation makes conservation and restoration of salmonids a challenge. For example, defining unambiguous units of conservation is difficult, and restoration attempts often fail owing to inadequate adaptive matching of translocated populations. A better understanding of the genetic architecture of local adaptation in salmonids could provide valuable information to assist in conserving and restoring natural populations of these important species. Here, we use a combination of laboratory crosses and next-generation sequencing to investigate the genetic architecture of the parallel adaptation of rapid development rate in two geographically and genetically distant populations of rainbow trout (Oncorhynchus mykiss). Strikingly, we find that not only is a parallel genetic mechanism used but that a conserved haplotype is responsible for this intriguing adaptation. The repeated use of adaptive genetic variation across distant geographical areas could be a general theme in salmonids and have important implications for conservation and restoration.Keywords
This publication has 67 references indexed in Scilit:
- Extent and scale of local adaptation in salmonid fishes: review and meta-analysisHeredity, 2011
- Transcriptome sequencing and high-resolution melt analysis advance single nucleotide polymorphism discovery in duplicated salmonidsMolecular Ecology Resources, 2010
- Using Population Genomics to Detect Selection in Natural Populations: Key Concepts and Methodological ConsiderationsInternational Journal of Plant Sciences, 2010
- Deep divergence and apparent sex-biased dispersal revealed by a Y-linked marker in rainbow troutMolecular Phylogenetics and Evolution, 2010
- On the origin of species: insights from the ecological genomics of lake whitefishPhilosophical Transactions B, 2010
- Adaptive Evolution of Pelvic Reduction in Sticklebacks by Recurrent Deletion of a Pitx1 EnhancerScience, 2010
- Single nucleotide polymorphism discovery in rainbow trout by deep sequencing of a reduced representation libraryBMC Genomics, 2009
- Genetics and ecological speciationProceedings of the National Academy of Sciences of the United States of America, 2009
- Combining population genomics and quantitative genetics: finding the genes underlying ecologically important traitsHeredity, 2007
- Rapid and cost-effective polymorphism identification and genotyping using restriction site associated DNA (RAD) markersGenome Research, 2006