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I have read about Parthenogenesis induction in a paper : "Hagimori T, Abe Y, Date S, Miura K (2006) The first finding of a Rickettsia bacterium associated with parthenogenesis induction among insects. Curr Microbiol 52: 97–101 "

I was curious to know what is the evolutionary advantage of parthenogenesis induction for the parasite (in this case Rickettsia bacterium ) ?

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This issue is addressed in this review by Cordaux et al, 2011, along with other, similar strategies.

The simple answer is that these types of bacteria are efficiently spread from females of the species they infect to their offspring; by inducing unfertilized eggs to develop into females, they increase their transmission efficacy.

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