SRP492420 PRJNA1081930 Population genetics studio in squid-vibrio system in the Galician rias In this study we have done a population genetics study, where sequencing COI gene from the host and gapA gene from the bacterial symbiont we assesed the genetic structure of the population of both counterparts of the symbiosis. This is the first study of this nature in the region and a new one to add in the poorly known and understood biology of the Atlantic bobtail squid and its bacterial partenrs from the genus Vibrio.