Definitions for suctoria
suc·to·ri·a

WikipediaRate this definition:0.0 / 0 votes

1. Suctoria

   Suctoria are ciliates that become sessile in their developed stage and then lose their redundant cilia. They feed by extracellular digestion. They were originally thought to feed by suction – hence their name. In fact, they use specialized microtubules to ensnare and manipulate their prey. They live in both freshwater and marine environments, including some that live on the surface of aquatic animals, and typically feed on other ciliates. Instead of a single cytostome, each cell feeds by means of several specialized tentacles. These are supported by microtubules and phyllae, and have toxic extrusomes called haptocysts at the tip, which they attach to prey. They then suck the prey's cytoplasm directly into a food vacuole inside the cell, where they digest and absorb its contents. Most suctoria are around 15-30 μm in size, with a non-contractile stalk and often a lorica or shell. Suctoria reproduce primarily by budding, producing swarmers that lack both tentacles and stalks but have cilia. They may also reproduce through conjugation, which is peculiar in involving cells of different size and often involves total fusion. The way buds form is the primary distinction between different orders of suctoria. Among the Exogenida, including common genera like Podophrya and Sphaerophrya, they appear directly on the cell surface. Among the Endogenida, for instance Tokophrya and Acineta, they form in an internal pouch and escape through an opening—and among the Evaginogenida, they form in a pouch that inverts before they are released. Once the swarmers have found a place to attach themselves, they quickly develop stalks and tentacles. The cilia are lost, but the underlying infraciliature persists throughout the entire life-cycle. This has a structure that, together with other ultrastructural similarities, places the suctoria within the class Phyllopharyngea.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Suctoria

   an order of Infusoria having the body armed with somewhat stiff, tubular processes which they use as suckers in obtaining their food. They are usually stalked

2. Suctoria

   same as Rhizocephala

3. Etymology: [NL. See Suction.]

WikidataRate this definition:0.0 / 0 votes

1. Suctoria

   Suctoria are sessile ciliates which feed by extracellular digestion and lack cilia in the adult phase. They were originally thought to feed by suction – hence their name. In fact, they use specialized microtubules to ensnare and manipulate their prey. They are found in both freshwater and marine environments, including some which live on the surface of aquatic animals, and typically feed on other ciliates. Instead of a single cytostome, each cell feeds by means of several specialized tentacles. These are supported by microtubules and phyllae, and have toxic extrusomes called haptocysts at the tip which attach to prey. Its cytoplasm is then sucked directly into a food vacuole inside the cell, where its contents are digested and absorbed. Most suctoria are around 15-30 μm in size, with a non-contractile stalk and often a lorica or shell. Suctoria reproduce primarily by budding, producing swarmers which lack both tentacles and stalks but have cilia. They may also reproduce through conjugation, which is peculiar in involving cells of different size and often involves total fusion. The way in which buds are formed is the primary way the different orders of suctoria are distinguished. Among the Exogenida, including common genera like Podophrya and Sphaerophrya, they appear directly on the cell surface. Among the Endogenida, for instance Tokophrya and Acineta, they are formed in an internal pouch and escape through an opening, and among the Evaginogenida, they are formed in a pouch that inverts before they are released.

EntomologyRate this definition:0.0 / 0 votes

1. Suctoria

   an ordinal term proposed for fleas.

Anagrams for suctoria »

1. cotarius

2. octarius

How to pronounce suctoria?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say suctoria in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of suctoria in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of suctoria in Pythagorean Numerology is: 7

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Suctoria
2. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/suctoria
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=suctoria
4. ^ Entomology
   https://www.gutenberg.org/files/22748/22748-h/22748-h.htm#:~:text=suctoria