Relationship between average proportion of male offspring in a clutch and Wolbachia infection status of the mother that produced the clutch in two different populations. (filled circles = population Damvallei, unfilled circles = population Walenbos). Error bars indicate 95% confidence intervals. The dotted line depicts a 50:50 sex ratio.
Vanthournout et al. BMC Evolutionary Biology 2011 11:15 doi:10.1186/1471-2148-11-15