| coexistence and origin of trophic ecotypes of pygmy whitefish, prosopium coulterii, in a south-western alaskan lake. | ecologically, morphologically and genetically distinct populations within single taxa often coexist in postglacial lakes and have provided important model systems with which to investigate ecological and evolutionary processes such as niche partitioning and ecological speciation. within the salmonidae, these species complexes have been well studied, particularly within the coregonus clupeaformis-c. laveratus (lake and european whitefish, respectively) group, but the phenomenon has been less well ... | 2012 | 23110688 |