Aquaspirillum (ak’wă-spī-ril’ŭm) is a genus of helical aerobic bacteria in the family Neisseriaceae that lives in freshwater.
. . . Aquaspirillum . . .
In 1832, the genus Spirillum was created and encompassed an array of helical bacteria. In 1957, the large genus was reviewed and narrowed to include 19 species based on morphology and a few other physiological characteristics. The genus Aquaspirillum was not created until 1973, when another review of Spirillum led to the division of the genus into Aquaspirillum, Oceanospirillum, and Spirillum.[1]
The genus’ name is a combination of several words. Aqua comes from Latin, meaning water; speîra comes from Greek, meaning a spiral; spirillum come from Neo-Latin, meaning a small spiral. Put together, the genus’ name means “small water spiral.”[2]
The new genus comprised the following 13 species when it was created:
- Aquaspirillum anulus
- Aquaspirillum aquaticum
- Aquaspirillumarcticum
- Aquaspirillum delicatum
- Aquaspirillum dispar
- Aquaspirillum giesbergeri
- Aquaspirillum gracile
- Aquaspirillumitersonii
- Aquaspirillum metamorphum
- Aquaspirillum polymorphum
- Aquaspirillum putridiconchylium
- ‘Aquaspirillum serpens (type species)[2]
- Aquaspirillum sinuosum
The following five species were added to Aquaspirillum in the years after its creation:[3]
- Aquaspirillum autotrophicum
- Aquaspirillum bengal
- Aquaspirillum fasciculus
- Aquaspirillum magnetotacticum
- Aquaspirillum psychrophilum
. . . Aquaspirillum . . .
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