Sanchez, Rokhsar, and colleagues use genome skimming to generate DNA markers for phylogenomic analyses of bobtail and bottletail squid. The ancestral state of bioluminescence suggests that the Sepiolinae ancestor possessed a bilobed light organ with bacteriogenic luminescence. Also, analyses of divergence time suggest that major biogeographic events might have shaped the speciation of these animals.
- Gustavo Sanchez
- Fernando Á. Fernández-Álvarez
- Daniel S. Rokhsar