Symbiosis describes mutually beneficial relationships between different species and is a
central pillar of biological systems. From human gut to whole ecosystems, beneficial
interactions are shaping function and evolution of life on the planet.
In this project, we study the symbiosis of the bioluminescent bacterium Vibrio fisheri with its
host the Hawaiian bobtail squid Euprymna scolopes. This highly specialized symbiotic
relationship, present in the unique light organ of the squid, enables the squid to hunt at night
and evade its predators. Our project will aim to understand what genomic changes were
required for the squid to evolve such specialized symbiotic organs. How often do such
changes occur in the animal kingdom and is their evolution reversible? Latest genomic and
molecular investigation techniques will be used to dissect the development of the light organ
at the molecular level. Beyond squid, our research will shed light on how symbiotic
interactions evolve in complex genomes of animals, and will also reveal how novel
specialized organs can evolve.