Data from: Stable coexistence of genetically divergent Atlantic cod ecotypes at multiple spatial scales ...

• Main Authors: Knutsen, Halvor, Jorde, Per Erik, Hutchings, Jeffrey A., Hemmer-Hansen, Jakob, Grønkjær, Peter, Jørgensen, Kris-Emil Mose, Andre, Carl, Sodeland, Marte, Albretsen, Jon, Olsen, Esben M., Grønkjaer, Peter
• Format: Dataset
• Language: English
• Published: Dryad 2018
• Subjects: Natural Selection and Contemporary Evolution; atlantic cod; Gadus morhua
• Online Access: https://dx.doi.org/10.5061/dryad.hm249b5; https://datadryad.org/stash/dataset/doi:10.5061/dryad.hm249b5

Coexistence in the same habitat of closely related yet genetically different populations is a phenomenon that challenges our understanding of local population structure and adaptation. Identifying the underlying mechanisms for such coexistence can yield new insight into adaptive evolution, diversification, and the potential for organisms to adapt and persist in response to a changing environment. Recent studies have documented cryptic, sympatric populations of Atlantic cod (Gadus morhua) in coastal areas. We analyzed genetic origin of 6483 individual cod sampled annually over 14 years from 125 locations along the Norwegian Skagerrak coast and document stable coexistence of two genetically divergent Atlantic cod ecotypes throughout the study area and study period. A ‘fjord’ ecotype dominated in numbers deep inside fjords while a 'North Sea' ecotype was the only type found in offshore North Sea. Both ecotypes coexisted in similar proportions throughout coastal habitats at all spatial scales. The size-at-age of ... : 26snp_reference data for analysis of assignmentReference data (individual genetic data (26 SNP's for each ind) for the North sea and coastal component). SNP's are described in paper.The other file contains inds that was genetically assigned to either of the"populations" in this file (North Sea or coastal component)26snp_reference.genepopBeachSeine_26SNP_all26 SNP loci for all beach seine dataindividual_informationInformation on all individuals (length position, aso)r_data3-6.csv ...