How big is a Spirostomum?
150 um to 4 mm long
Body highly elongate, often worm-like, large (150 um to 4 mm long), cylindrical or flattened.
Does Spirostomum eat?
Spirostomum feeds on bacteria and during cold weather forms large clusters of organisms that hibernate together. The cilia beat in synchronized waves, propelling the organism through the water. Most ciliates possess an oral cavity, or cytostome, through which food enters the cell.
What does Spirostomum do?
Spirostomum, like many cilates, feeds on bacteria. They are swept into the mouth opening with a row of specialized fused cilia. The mouth opening is very small and can be found on the side of the body.
What do all Alveolata have?
Alveolates have mitochondria with tubular cristae (ridges), and their flagellae or cilia have a distinct structure. Almost all sequenced mitochondrial genomes of ciliates and apicomplexia are linear.
Are cilia found in Spirostomum?
The genus Spirostomum contains some of the largest Ciliates. Only with the help of a microscope you can see that it is a ciliate. The cell of this unicellular is totally covered with hairlike ‘cilia’. On the picture you can see the rows of cilia running like a spiral along the body.
Do Spirostomum have a nucleus?
Like many large single celled organisms (giant amoebas, or Stentor: the trumpet animalcule) it has not one nucleus but many. The nucleii form a long strand, like a string of pearls, visible as the lighter structure in the right image. Spirostomum, like many cilates, feeds on bacteria.
Where is Spirostomum found?
Spirostomum is a free-living ciliate protist, belonging to the class Heterotrichea. Species of Spirostomum are found in both salt and fresh water.
How do you move Spirostomum?
Common to many lakes and ponds, the Spirostomum ordinarily moves about using tiny hairs called cilia. But its claim to speed involves extremely rapid acceleration while contracting its body when startled.
What phylum is Spirostomum in?
Ciliophora
Integrated Taxonomic Information System – Report
| Kingdom | Protozoa |
| Phylum | Ciliophora |
| Class | Ciliatea |
| Subclass | Spirotricha |
| Order | Heterotrichida |
What is the genus name of Spirostomum?
Spirostomum is a genus of free-living ciliate protists, belonging to the class Heterotrichea.
Is Spirostomum a ciliate?
The genus Spirostomum contains some of the largest Ciliates. The species pictured on this page, Spirostomum ambiguum, can grow to to a size of more than 4 millimetres. It can therefore be seen without the help of a microscope.
What does Spirostomum look like without a microscope?
The genus Spirostomum contains some of the largest Ciliates. The species pictured on this page, Spirostomum ambiguum, can grow to to a size of more than 4 millimetres. It can therefore be seen without the help of a microscope. When observed swimming in a little jar of pond water it looks like a little worm.
How does Spirostomum reproduce?
Spirostomum reproduces by binary fission. Reproduction may be purely asexual, or it may follow conjugation, during which compatible mating individuals come together and transfer genetic material across a cytoplasmic link. Members of the genus are extremely contractile.