Whole-genome resequencing confirms reproductive isolation between sympatric demes of brown trout (Salmo trutta) detected with allozymes

Atal Saha, Anastasia Andersson, Sara Kurland, Naomi Keehnen, Verena Kutschera, Ola Hössjer, Diana Ekman, Sten Karlsson, Marty Kardos, Gunnar Ståhl, Fred Allendorf, Nils Ryman & Linda Laikre
The sympatric existence of genetically distinct populations of the same species remains a puzzle in ecology. Coexisting salmonid fish populations are known from over 100 freshwater lakes. Most studies of sympatric populations have used limited numbers of genetic markers making it unclear if genetic divergence involves only certain parts of the genome. We return to the first reported case of salmonid sympatry, initially detected through contrasting homozygosity at a single allozyme locus (coding for lactate...
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