| Description | Cetobacterium somerae is a Gram-negative, rod-shaped microbe that thrives in mesophilic temperatures, categorizing it as a chemoheterotroph, and can be found in various body sites of fish, including the skin, gills, and intestines of all possible species, and is an obligate anaerobe. The Gram-negative characteristic indicates that the microbe's cell wall is composed of a thin peptidoglycan layer, making it more susceptible to certain antibiotics. Its rod-shaped morphology allows it to maintain a large surface area, facilitating the exchange of nutrients and waste products. As a mesophilic microbe, Cetobacterium somerae grows best in temperatures ranging from 20-45°C, making it well-suited to the average temperature of its fish hosts.As a chemoheterotroph, Cetobacterium somerae relies on organic compounds for energy and carbon, breaking down complex molecules into simpler ones to sustain its growth and survival. Its presence in various fish body sites suggests a symbiotic relationship, where the microbe contributes to the host's health by providing essential nutrients or aiding in digestion. The obligate anaerobic nature of Cetobacterium somerae means that it requires a low-oxygen environment to thrive, which is consistent with its habitat in the intestines of fish.Cetobacterium somerae has been found to produce vitamins, particularly vitamin B12, which is essential for the growth and development of fish, and its presence has been linked to the health and well-being of its host, highlighting the importance of this microbe in aquatic ecosystems. |
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