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We examined induction of preference and performance on novel host plants for two laboratory populations of the polyphagous spider mite Tetranychus urticae, with one population adapted to bean and the other population adapted to tomato. We bred four isofemale lines of the bean population only and used them in all the assays. The bean population had a 30%(More)
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(More)
Wolbachia are cytoplasmically transmitted bacteria that infect several species of mites. In the two-spotted spider mite Tetranychus urticae Koch this symbiont can induce reproductive incompatibility. Wolbachia-induced reproductive incompatibility is observed in crosses between Wolbachia-infected (W) males and uninfected (U) females. This incompatibility is(More)
Ever since Darwin, understanding evolutionary processes and patterns have been major scientific quests. In the Origin of Species, Darwin explained both adaptation and diversity, and most of his arguments were based on indirect evidence, including comparative approaches. These findings led Darwin to defend that evolution in nature is extremely slow and(More)
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