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Table 1 Transmission efficiency of the A. bipunctata Spiroplasma male-killer following injection into different coccinellid species.

From: Small steps or giant leaps for male-killers? Phylogenetic constraints to male-killer host shifts

Species N Females Males
   Infected Uninfected Infected Uninfected
A. bipunctata 33 33 0 - -
A. decempunctata 16 16 0 - -
C. septempunctata - - - - -
H. quadripunctata 6 20 18 11 22
A. novemdecimpunctata 5 12 0 12 0
C. quatuordecimguttata 8 16 20 1 14
P. quatuordecimpunctata 6 3 14 0 3
E. quadripustulatus 1 10 0 9 0
  1. Offspring of injected females were tested by PCR for Spiroplasma infection when adults. Numbers of infected males and females from each species are shown separately. The Adalia species produced no males. Coccinella septempunctata produced no fertile eggs, but clutches did carry the bacterium. The number of matrilines from which the offspring tested were derived is shown (N).