Dictionary > Aquaspirillum


A genus of the family Spirillaceae which includes motile, nonsporeforming, aerobic bacteria whose cells are helical or helicaly curved and ranging from 0.2 to 1.5 µm in diameter. Most of them live in freshwater. The motile forms have fascicles of flagella at one or both poles. They are chemoorganotrophic. They do not ferment carbohydrates, although some species can oxidize but only limited types of carbohydrates. Some species grow anaerobically using nitrate (instead of oxygen) as terminal electron acceptor.
An example of species belonging to this group is the Aquaspirillum serpens and Aquaspirillum magnetotacticum.
Word origin: Latin, aqua (water) + spirillum (coil).

You will also like...

Electromagnetic spectrum of a brain
Sleep and Dreams – Neurology

While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..

Biological Viruses
Biological Viruses

Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...

Human Reproduction
Human Reproduction

Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..

"Cronopio dentiacutus", a prehistoric mammal (an illustration)
Mammalian Ancestors

Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..

DNA molecule
Genetic Control – On and Off Genes

Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..

Freshwater lake ecosystem
Freshwater Producers and Consumers

Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..