| phylogeographical patterns among mediterranean sepiolid squids and their vibrio symbionts: environment drives specificity among sympatric species. | bobtail squid from the genera sepiola and rondeletiola (cephalopoda: sepiolidae) form mutualistic associations with luminous gram-negative bacteria (gammaproteobacteria: vibrionaceae) from the genera vibrio and photobacterium. symbiotic bacteria proliferate inside a bilobed light organ until they are actively expelled by the host into the surrounding environment on a diel basis. this event results in a dynamic symbiont population with the potential to establish the symbiosis with newly hatched s ... | 2010 | 21075896 |