Phyllopharyngea

Nowadays, Phyllopharyngea is a topic that has gained great relevance in society. Over time, it has aroused the interest of a large number of people due to its impact on various areas of daily life. Since its emergence, Phyllopharyngea has generated debate, reflection and even controversy, which has led to greater attention being paid to it today. Given the relevance it has acquired, it is important to delve deeper into the analysis of Phyllopharyngea, understand its implications and look for possible solutions. In this article, we will explore this topic in detail to better understand its scope and the various perspectives that exist around it.

Phyllopharyngea
Suctoria
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Clade: Alveolata
Phylum: Ciliophora
Subphylum: Intramacronucleata
Infraphylum: Ventrata
Class: Phyllopharyngea
de Puytorac et al. 1974[1]
Typical orders

Subclass Phyllopharyngia
    Chlamydodontida
    Dysteriida
Subclass Chonotrichia
    Exogemmida
    Cryptogemmida
Subclass Rhynchodia
    Rhynchodida
    Hypocomatida
Subclass Suctoria
    Exogenida
    Endogenida
    Evaginogenida

The Phyllopharyngea are a class of ciliates, some of which are extremely specialized. Motile cells typically have cilia restricted to the ventral surface, or some part thereof, arising from monokinetids with a characteristic ultrastructure. In both chonotrichs and suctoria, however, only newly formed cells are motile and the sessile adults have undergone considerable modifications of form and appearance. Chonotrichs, found mainly on crustaceans, are vase-shaped, with cilia restricted to a funnel leading down into the mouth. Mature suctorians lack cilia altogether, and initially were not classified as ciliates.

The mouths of Phyllopharyngea are characteristically surrounded by microtubular ribbons, called phyllae. Nematodesmata, rods found in several other classes of ciliates, occur among the subclass Phyllopharyngia, most of which are free-living. In others, the mouth is often modified to form an extensible tentacle, with toxic extrusomes at the tip. These are especially characteristic of the suctoria, which feed upon other ciliates, and are unique among them in having multiple mouths on each cell. They are also found in many rhynchodids which are mostly parasites of bivalves.

References

  1. ^ Lynn DH (2008-06-24). The Ciliated Protozoa: Characterization, Classification, and Guide to the Literature (3 ed.). Springer. pp. 379–380. ISBN 978-1-4020-8239-9.

Further reading