Is desulfovibrio a chemoautotrophs or a chemoheterotroph?

Desulfovibrio is primarily classified as a chemoheterotroph. These bacteria obtain their energy by oxidizing organic compounds and require organic carbon sources for growth. While some members of the genus can utilize sulfate as a terminal electron acceptor in anaerobic respiration, they do not synthesize their own organic compounds from inorganic sources, which distinguishes them from chemoautotrophs.