Data from: Differentiation at the MHCIIα and Cath2 loci in sympatric Salvelinus alpinus resource morphs in Lake Thingvallavatn ...

• Main Authors: Kapralova, Kalina H., Gudbrandsson, Johannes, Reynisdottir, Sigrun, Santos, Cristina B., Baltanás, Vanessa C., Maier, Valerie H., Snorrason, Sigurdur S., Palsson, Arnar
• Format: Dataset
• Language: English
• Published: Dryad 2013
• Subjects: salmonidae; Euteleostei; Immunology; FOS Clinical medicine; Parasites; association test; Salvelinus alpinus; Evolutionary genetics; Arctic; Arctic charr; Iceland
• Online Access: https://dx.doi.org/10.5061/dryad.81884; https://datadryad.org/stash/dataset/doi:10.5061/dryad.81884

Northern freshwater fish may be suitable for the genetic dissection of ecological traits because they invaded new habitats after the last ice age (~10.000 years ago). Arctic charr (Salvelinus alpinus) colonizing streams and lakes in Iceland gave rise to multiple populations of small benthic morphotypes, often in sympatry with a pelagic morphotype. Earlier studies have revealed significant, but subtle, genetic differentiation between the three most common morphs in Lake Thingvallavatn. We conducted a population genetic screen on four immunological candidate genes Cathelicidin 2 (Cath2), Hepcidin (Hamp), Liver expressed antimicrobial peptide 2a (Leap-2a), and Major Histocompatibility Complex IIα (MHCIIα) and a mitochondrial marker (D-loop) among the three most common Lake Thingvallavatn charr morphs. Significant differences in allele frequencies were found between morphs at the Cath2 and MHCIIα loci. No such signal was detected in the D-loop nor in the other two immunological genes. In Cath2 the small benthic ... : Kapralova2013_Charr2005Dataset 1 – Arctic Charr from Lake Thingvallavatn, collected in 2005. Collected in the field, phenotype and genotype of MHCIIalpha described in the lab.Kapralova2013_Charr2010Dataset 1 – Arctic Charr from Lake Thingvallavatn, collected in 2010. Captured in the wild, phenotyped and genotyped in the laboratory. ...