Dictionary > Trematoda

Trematoda

Definition
noun
(taxonomy) A class of the Phylum Platyhelminthes that is comprised of parasitic flukes
Supplement
The phylum Platyhelminthes (flatworms) is comprised of parasitic worms characterized mainly by their flattened, bilaterally symmetrical body. This phylum includes the four classes: (1) Turbellaria, (2) Trematoda, (3) Monogenea, and (4) Cestoda. The Class Trematoda includes species (approximately 24,000 species1) that live as obligate parasites (or endoparasites). Most of them require two hosts to complete their life cycle. The class is divided into two sublasses: Digenea and Aspidogastrea. Digenea is the larger subclass and is comprised of parasitic species of both mollusk and vertebrate hosts. Aspidogastrea is a smaller subclass and includes trematode species (about 100 species) that live as obligate parasites of mollusks but may also infect vertebrates (e.g. turtles and fish). Monogenea is a former subclass of trematode but is now regarded as a distinct class of the phylum Platyhelminthes.
Species of the Class Trematoda are also commonly called as flukes. Medically important species include Schistosoma, Clonorchis, Opisthorchis, Fasciola, and Paragonimus species; they are capable of infecting (or infesting) humans. The digenetic trematodes are the only ones found in man.
Scientific classification:

See also:

  • trematode
  • flatworm
  • Reference(s):

    1 Poulin, R. & Morand, S. (2005). Parasite Biodiversity. Smithsonian. p. 216.


    You will also like...

    Human perception in action
    Human Perception – Neurology

    This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..

    Crossing Over and Genetic Diversity
    Inheritance and Probability

    Gregor Mendel, an Austrian monk, is most famous in this field for his study of the phenotype of pea plants, including ..

    dinosaurs
    The Dinosaurs

    Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..

    Cell structure
    Cell Structure

    A typical eukaryotic cell is comprised of cytoplasm with different organelles, such as nucleus, endoplasmic reticulum, G..

    Sigmund Freud and Carl Gustav Jung
    Sigmund Freud and Carl Gustav Jung

    In this tutorial, the works of Carl Gustav Jung and Sigmund Freud are described. Both of them actively pursued the way h..

    "Opabinia regalis"
    The Evolutionary Development of Multicellular Organisms

    Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..