Abstract Background The Syndermata (Rotifera+Acanthocephala) is one of the best model systems for studying the evolutionary origins and persistence of different life styles because it contains a series of lineage-specific life histories: Monogononta (cyclic parthenogenetic and free-living). Bdelloidea (entirely parthenogenetic and mostly benthic dweller). Seisonidea (exclusively bisex... https://www.remtavares.com/