Complex dynamics of multilocus systems subjected to cyclical selection.
Earlier we have shown that oscillations with a long period ("supercycles") may arise in two-locus systems experiencing cyclical selection with a short period. However, this mode of complex limiting behavior appeared to be possible for narrow ranges of parameters. Here we demonstrate that a multilocus system subjected to stabilizing selection with cyclically moving optimum can generate ubiquitous complex limiting behavior including supercycles, T-cycles, and chaotic-like phenomena. This mode of multilocus dynamics far exceeds the potential attainable under ordinary selection models resulting in simple behavior. It may represent a novel evolutionary mechanism increasing genetic diversity over long-term time periods.
Kirzhner
V M
VM
Institute of Evolution, University of Haifa, Israel.
Korol
A B
AB
Nevo
E
E
D005075:Biological Evolution; D002874:Chromosome Mapping; D005799:Genes, Dominant; D014644:Genetic Variation; D005828:Genetics, Population; D008957:Models, Genetic; D012641:Selection, Genetic