The ancestral endosymbiont Blattabacterium was lost ten times independently in Blattellidae, Pseudophyllodromiidae and Anaplectidae cockroaches
Zhuli Cheng, Yukihiro Kinjo, Esra Kaymak, DAVID C. F. RENTZ, Nathan C. Lo, Frédéric Legendre, Jan Šobotník, Thomas Bourguignon
The study finds that Blattabacterium was lost ten times independently in three cockroach families, with some losses possibly compensated by Wolbachia associations.
bioRxiv · Aug 25, 2026 · PreprintEvolutionary Biology