General Information: Isolation: Hot spring; Country: Portugal; Temp: Thermophile; Temp: 50C; Habitat: Hot spring. An aerobic, thermophilic, nonmotile Gram-negative bacterium isolated from the hot spring located at the end of a 450 m tunnel and from thermal water piped to a spa at Vizela in northern Portugal. M. silvanus is of special interest as it causes colored biofilms in the paper making industry and may thus be of economic importance as a biofouler. M. silvanus has also been detected in the gut of an invasive wood-boring beetle and in seawater adjacent to a Pacillopora meandrina coral colony at Palmyra Atoll.