? Trematoda
Botulus microporus, a giant digenean parasite from the intestine of a lancetfish Download high resolution version (1390x508, 126 KB)A giant digenean parasite, Botulus microporus, which lives in the intestines of Lancetfish. ... Species Alepisaurus ferox Lowe, 1833 Alepisaurus brevirostris Gibbs, 1960 Lancetfish (genus Alepisaurus Lowe, 1833) (Lat. ...
Scientific classification
Kingdom: Animalia Phylum: Platyhelminthes Class: Trematoda Rudolphi, 1808
Subclasses
Aspidogastrea Digenea Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria Placozoa Subregnum Bilateria  Acoelomorpha  Orthonectida  Rhombozoa  Myxozoa  Superphylum Deuterostomia     Chordata (vertebrates, etc. ... Classes Monogenea Trematoda Cestoda Turbellaria The flatworms (Platyhelminthes, Greek platy: flat; helminth: worm) are a phylum of relatively simple soft-bodied invertebrate animals. ... Karl Asmund Rudolphi (b. ... Orders incertae sedis, see text The Aspidogastrea (gr. ... Orders within the Digenea Strigeidida Azygiida Echinostomida Plagiorchiida Opisthorchiida The digenea (Gr. ...

The Trematoda is a class within the phylum Platyhelminthes, which contains two groups of parasitic worms. Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ... Phylum is one of the levels of scientific classification of organisms; see the Phylum (biology) article. ... Classes Monogenea Trematoda Cestoda Turbellaria The flatworms (Platyhelminthes, Greek platy: flat; helminth: worm) are a phylum of relatively simple soft-bodied invertebrate animals. ... WORM means Write Once, Read Many. ...

Taxonomy

All trematodes are parasitic flatworms. Previous classification systems included the Monogenea amongst the trematoda, alongside the Digenea and Aspidogastrea, on the basis that they were all vermiform parasites. The taxonomy of the Platyhelminthes is being subjected to extensive revision thanks to modern phylogenetic studies, and modern sources place the Monogenea in a separate class within the phylum. A parasite is an organism that lives in or on the living tissue of a host organism at the expense of that host. ... Monogenea (adj. ... Orders within the Digenea Strigeidida Azygiida Echinostomida Plagiorchiida Opisthorchiida The digenea (Gr. ... Orders incertae sedis, see text The Aspidogastrea (gr. ... Vermiform is an adjective meaning worm-like. ... In biology, Phylogenetics (Greek: phylon = race and genetic = birth) is the taxonomical classification of organisms based on how closely they are related in terms of evolutionary differences. ...

Etymology

In English, Trematodes are commonly referred to as flukes. This term can be traced back to the Saxon name for Flounder, and refers to the flattened, rhomboidal shape of the worms. A map showing the general locations of the major Anglo-Saxon kingdoms The Anglo-Saxons were originally a collection of differing Germanic tribes from Angeln—a peninsula in the southern part of Schleswig, protruding into the Baltic Sea, and what is now Lower Saxony, in the north-west coast of... Winter flounder Flounder are flatfish that inhabit ocean waters in Northern European waters and along the east coast of the United States and Canada. ...

There are no known cases of human infection with Aspidogastreans, therefore the use of the term "fluke" in relation to human infection refers solely to digenean infections.

These can be classified into two areas, on the basis of the system which they infect. Tissue flukes, are species which infect the bile ducts, lungs, or other biological tissues. This group includes the lung fluke, Paragonimus westermani, and the liver flukes, Clonorhis sinensis and Fasciola hepatica. The other group are known as blood flukes, and inhabit the blood in some stages of their life cycle. Blood flukes include various species of the genus Schistosoma. A bile duct is any of a number of long tube-like structures that carry bile. ... The lungs flank the heart and great vessels in the chest cavity. ... Biological tissue is a substance made up of cells that perform a similar function. ... Liver flukes are a polyphyletic group of a trematodes (a kind of flatworm). ... Binomial name Clonorchis sinensis Clonorchis sinensis, commonly known as the Human Liver Fluke is a flatworm. ... A Liver Fluke(Fasciola hepatica) is a trematode (flat worm). ... Red blood cells (erythrocytes) are present in the blood and help carry oxygen to the rest of the cells in the body Blood is a circulating tissue composed of fluid plasma and cells (red blood cells, white blood cells, platelets). ... A genus of trematodes, Schistosoma spp. ...

Life Cycles

Trematodes have a complex life cycle, often involving several hosts. The eggs pass from the host with the feces. When the eggs reach water, they hatch into free-swimming forms called miracidia. The miracidia penetrate a snail or other molluscan host to become sporocysts. The cells inside the sporocysts typically divide by mitosis to form rediae. Rediae, in turn, give rise to free-swimming cercariae, which escape from the mollusk into water. Using enzymes to burrow through exposed skin, cercariae penetrate another host (often an arthropod) and then encyst as metacercariae. When this host is eaten by the definitive host, the metacercariae excyst and develop and the life cycle repeats. For more information on life cycles, see the respective pages on digenea and aspidogastrea. Rabbit feces are usually 0. ... The miracidium is the free swimming larva of some Trematoda including the Schistosoma. ... Giant African Snail (Achatina fulica) The name snail applies to most members of the molluscan class Gastropoda that have coiled shells. ... Classes Caudofoveata Aplacophora Polyplacophora - Chitons Monoplacophora Bivalvia - Bivalves Scaphopoda - Tusk shells Gastropoda - Snails and Slugs Cephalopoda - Squids, Octopuses, etc. ... The miracidium is the small free-swimming larva of some Trematoda including the Schistosoma. ... Light micrograph of a newt lung cell in early anaphase of mitosis. ... The miracidium is the small free-swimming larva of some Trematoda including the Schistosoma. ... Neuraminidase ribbon diagram An enzyme (in Greek en = in and zyme = blend) is a protein, or protein complex, that catalyzes a chemical reaction and also controls the 3D orientation of the catalyzed substrates. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - Trilobites (extinct) Subphylum Chelicerata Arachnida - Spiders, Scorpions, etc. ... A cyst is a closed sac having a distinct membrane and developing abnormally in a cavity or structure of the body. ... A life cycle includes the major sexual stages of a species, especially in regard to its ploidy. ... Orders within the Digenea Strigeidida Azygiida Echinostomida Plagiorchiida Opisthorchiida The digenea (Gr. ... Orders incertae sedis, see text The Aspidogastrea (gr. ...

Chemical castration of hosts

Some parasitic trematodes chemically castrate their host, see microphallus. Chemical castration is a form of castration caused by certain hormonal drugs. ... Castration, gelding, neutering, orchiectomy or orchidectomy is any action, surgical or otherwise, by which a biological male loses use of the testes. ... Species M. piriformes Synonyms Microphallus is a genus of parasitic trematodes (flukes) in the family Microphallidae. ...