Journal article

Within- and between-population variation for Wolbachia-induced reproductive incompatibility in a haplodiploid mite

F Vala, A Weeks, D Claessen, JAJ Breeuwer, MW Sabelis



Wolbachia pipientis is a bacterium that induces cytoplasmic incompatibility (CI), the phenomenon in which infected males are reproductively incompatible with uninfected females. CI spreads in a population of hosts because it reduces the fitness of uninfected females relative to infected females. CI encompasses two steps: modification (mod) of sperm of infected males and rescuing (resc) of these chromosomes by Wolbachia in the egg. Infections associated with CI have mod+ resa+ phenotypes. However, mod- resc+ phenotypes also exist; these do not result in CI. Assuming mod/resc phenotypes are properties of the symbiont, theory predicts that mod- resc+ infections can only spread in a host populat..

View full abstract

University of Melbourne Researchers