Endosymbiont Capture, a Repeated Process of Endosymbiont Transfer with Replacement in Trypanosomatids spp.

Trypanosomatids of the subfamily Strigomonadinae bear permanent intracellular bacterial symbionts acquired by the common ancestor of these flagellates. However, the cospeciation pattern inherent to such relationships was revealed to be broken upon the description of , which is sister to , but bears an endosymbiont genetically close to that of . Based on phylogenetic inferences, it was proposed that the bacterium from had been horizontally transferred to .