Monogeneans are important pathogenic parasites of captured captive fishes and .. characteristic of the Class Monogenea, but do present an operculum that. members of the flatworm phylum Platyhelminthes, class Monogenea. Monogenea are small parasitic flatworms mainly found on skin or gills. Major Classes – will consider each in detail: 1. Class Trematoda a. Subclass Aspidobothrea b. Subclass Digenea. 2. Class Monogenea. 3. Class Cestoidea.

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Discover some of the most interesting and trending topics of Planarians Probably the most familiar Turbellarians are the planarians, soft-bodied, aquatic, flattened worms that appear to have crossed eyes and ear lobes.

Monogenea | flatworm class |

By using this site, you agree to the Terms of Use and Privacy Policy. The Monogenea are mainly ectoparasites of fish and have a simple life-cycle involving only mobogenea host; whereas the Trematoda are mainly endoparasitic and have classse more complicated life-cycle involving more than one host. The Monogenea and the Trematoda above are commonly known as flukes. This term can be traced back to the Old English name for flounderand refers to the flattened, monoggenea shape of the worms.

Diseases and parasites in cod Diseases and parasites in salmon Disease in ornamental fish List of aquarium diseases. Views Read Edit View history. Probably the most familiar Turbellarians are the planarians, soft-bodied, aquatic, flattened worms that appear to have crossed eyes and ear lobes.

Platyhelminthes – flat worms, flukes, tape worms, etc.

Strongyloides stercoralis Strongyloidiasis Trichostrongylus spp. The genus Gyrodactylus is an example of a viviparous variety, while the genus Dactylogyrus is an example of an oviparous variety [1].


While some species live in moist, dark areas on land, most live at the bottom of marine water. The larva, known as an oncomiracidium, is heavily ciliated has actively moving hairlike projections and bears numerous posterior hooks.

Two other parasitic classes, the Monogenea and Cestodaare sister classes in the Neodermataa group of Rhabditophoran Platyhelminthes.

In the definitive host, in which sexual reproduction occurs, eggs are commonly shed along with host feces. The oncomiracidium has numerous posterior hooks and is generally the life stage responsible for transmission from host to host.

It is connected via a pair of ducts to a number of vitelline glands on either side of the body, that produce yolk cells.

Platyhelminthes (flat worms, flukes, tape worms, etc.)

The single opening on the ventral bottom surface of the worm serves as both mouth and anus. Articles needing additional references from March All articles needing additional references Articles with ‘species’ microformats. Most turbellarians are exclusively free-living forms. They are called auricles, and they do not hear. Their epidermis is syncitial many nuclei with no, or little, separation between cells. This final part of the male system varies considerably in structure between speciesbut may include sperm storage sacs and accessory glands, in addition to the copulatory organ, which is either eversible, and termed a cirrusor non-eversible, and termed a penis.

Trematoda Botulus microporusa giant digenean parasite from the intestine of a lancetfish Scientific classification Kingdom: Amnesic shellfish poisoning Brevetoxin Ciguatera Diarrheal shellfish poisoning Fish kill Neurotoxic shellfish poisoning Paralytic shellfish poisoning Saxitoxin. Use dmy dates from August Articles with ‘species’ microformats Wikipedia articles needing clarification from August Wikipedia articles with NDL identifiers.

The larger species are either ribbon-shaped or leaf-shaped, see Eurylepta rubrocincta class Turbellaria. The trematodes or flukes include 18, [1] to 24, [2] speciesdivided into two subclasses.


Internally the worm has a complex, branching gut that courses nearly the full length of the body. There are around species.

Polystomatidae infecting clasze African clawed classe Xenopus laevis. Nutrients are absorbed directly through the surface which has many folds increasing the surface area, and is equipped with a large number of mitochondria. Generally, monogeneans also are hermaphroditic with functional reproductive organs of both sexes occurring in one individual.

Diphyllobothrium latum Diphyllobothriasis Spirometra erinaceieuropaei Sparganosis Diphyllobothrium mansonoides Sparganosis. However, trematodes can be found anywhere where untreated human waste is used as fertilizer. Most species are oviparous, but a few are viviparous. In other projects Wikimedia Commons Wikispecies.

It is a subspecies…. Their most distinctive external feature is the monogeneaa of two suckersone close to the mouth, and the other on the underside of the animal.

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While the aquatic species seldom grow more than 0. Although they are hermaphroditesthe male reproductive system becomes functional before the female part. Tapeworms are the dominant member of the class Cestoidea.

From Wikipedia, the free encyclopedia. I need a break. It is also the surface of gas exchange; there are no respiratory organs. For instance, pond flukes infect fish in ponds. The eggs hatch in water. The anterior structures are collectively termed the prohaptorwhile the posterior ones are collectively termed the opisthaptoror simply haptor. They may also be classified according to the environment in which they are found.