Modulation of host immunity and reproduction by horizontally acquired Wolbachia

- wCon and wDil were horizontally introduced in asymbiotic Porcellio dilatatus.
- When acquired by injection Wolbachia had no significant effect on immune parameters.
- When vertically acquired, both Wolbachia modulated some host immune parameters.
- The presence of each Wolbachia impacted oppositely reproductive and immune traits.
- This suggests that the two Wolbachia mediate the balance between those traits in a different manner.