Sex wars and alien invaders


Abstract: The susceptibility of Adalia bipunctata, infected with either Wolbachia, Rickettsia orSpiroplasma, to the fungal pathogen Beauveria bassiana was examined. Individuals infected withWolbachia were no more susceptible to the fungal pathogen than uninfected (normal sex ratio)individuals. In contrast, ladybirds infected with either Rickettsia or Spiroplasma were moresusceptible to B. bassiana. The evolutionary implications of these results are briefly discussed.

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