Moraxella osloensis

Moraxella osloensis is a species of Gram-negative oxidase positive, aerobic bacteria within the family Moraxellaceae in the gamma subdivision of the purple bacteria.

The bacterium Moraxella osloensis is a mutualistic symbiont of the slug-parasitic nematode Phasmarhabditis hermaphrodita. In nature, Phasmarhabditis hermaphrodita vectors Moraxella osloensis into the shell cavity of the slug host in which the bacteria multiply and kill the slug.