noun
A microorganism that produces methane as a metabolic byproduct, typically found in anaerobic environments such as wetlands, digestive tracts of ruminants, and deep-sea sediments.
メタン生成菌は嫌気的条件下でメタンを生成する。
Methanogens produce methane under anaerobic conditions.
牛の胃の中には多くのメタン生成菌が生息している。
Many methanogens live in the stomachs of cows.