11.2 Demonstrating the Status of Long-Lived Asexuals / [...] Indeed, if sex has so many advantages, then which special adaptations - if any - allow long-term survival without it? However, the main task of the research teams dealing with such putative ancient asexuals has thus far been to demonstrate that their respective groups (mainly bdelloids, darwinulids and certain lineages within orbatid mites) indeed merit the status.
2009, Isa Schön, Giampaolo Rossetti, Koen Martens, Darwinulid Ostracods: Ancient Asexual Scandals or Scandalous Gossip?, published as Chapter 11 of Lost Sex: The Evolutionary Biology of Parthenogenesis, Isa Schön, Koen Martens, Peter van Dijk (editors), page 221