Bidirectional cytoplasmic incompatibility and the stable coexistence of two Wolbachia strains in parapatric host populations

摘要: Wolbachia are intracellular bacteria which very widely distributed among arthropods. In many insect species known to induce cytoplasmic mating incompatibility (CI). It has been suggested that could promote speciation in their hosts if parapatric host populations infected with two different strains causing bidirectional incompatibilities. A necessary condition for this scenario work is the can stably coexist. The following study investigates problem analysing a mathematical model and migration between them. We show stability of CI be fully described terms critical rate defined as highest below stable coexistence possible. For some special cases we derive analytical solutions rate; general case estimations given. Our main finding persist face high over 15% per generation levels observed nature. These results have implications potential genetic divergence hosts.