monogenea are ectoparasitic while trematoda are endoparasitic

Trematoda

Liver flukes belong to the class Trematoda in the phylum Platyhelminthes.

trematoda and monogenea

Flukes

Cestoda, Turbellaria, Trematoda, and Monogenea

Trematoda are more evolutionarily advanced because they show the traits of cephalization, an organ system, and have a lophophore. While nematoda have none of these traits.

They enter in through the water.

Turbellaria , Trematoda and cestoda

William Chandler Burns has written:

'The life cycle of Metagonimoides oregonensis Price (trematoda; heterophyidae)' -- subject(s): Trematoda, Raccoons, Diseases

Eduardo Caballero y Caballero has written:

'Tres nuevas especies de Trematoda rudolphi, 1808' -- subject(s): Bats, Parasites, Trematoda

Emmett William Price has written:

'Four new species of trematode worms from the muskrat' -- subject(s): Mammals, Muskrat, Parasites, Trematoda

'The trematode parasites of marine mammals' -- subject(s): Mammals, Parasites, Trematoda

'New digenetic trematodes from marine fishes' -- subject(s): Fishes, Parasites, Trematoda

Intermediate host - snail definitive host - cattle/sheep

Trematode-- Any parasitic flatworm of the class Trematoda, as the liver fluke.

class turbellaria isncludes the members which are free living and class trematoda includes parasitic species

The phylum that contains the classes Trematoda, Cestoda, and Turbellaria is Platyhelminthes. These classes are all part of the same phylum due to their similar characteristics, such as being flatworms with bilateral symmetry and simple body structures.

K. V. Galaktionov has written:

'The biology and evolution of trematodes' -- subject(s): Trematoda, Evolution

Muhammad Sharif Bhutta has written:

'Digenetic trematodes of vertebrates from Pakistan' -- subject(s): Parasites, Platyhelminthes, Trematoda, Vertebrates

Flatworms are of the phylum Platyhelminthes. This phylum has three classes:

Turbellaria -- predacious worms

Trematoda -- known commonly as flukes

Cestoda -- tapeworms

The scientific name for flatworms is Platyhelminthes.

Marcos Angeles Tubangui has written:

'Two new intestinal trematodes from the dog in China' -- subject(s): Dogs, Parasites, Trematoda

There are three main subgroups within the phylum Platyhelminthes: Turbellaria (free-living flatworms), Trematoda (flukes), and Cestoda (tapeworms). Each subgroup consists of various species with unique characteristics and ecological roles.

Robert Franklin Hutton has written:

'Studies on the trematode paradites encysted in Florida mullets' -- subject- s -: Gray mullets, Trematoda, Parasites

Lewis Eugene Aldrich has written:

'Digenetic trematodes from marine fishes in the San Juan Archipelago' -- subject(s): Fishes, Diseases, Trematoda

Daniel Tin-Hung Law has written:

'Studies on some digenetic trematodes from Ritner Creek, Polk County, Oregon' -- subject(s): Trematoda

Flatworms are divided into two groups, parasitic and nonparasitic. The parasitic types, which live off of other organisms, consist of Cestoda, Trematoda, and Monogenea flatworms.

Walter Schauman Lundahl has written:

'Life history of Caecincola parvulus Marshall and Gilbert (Cryptogonimidae, Trematoda) and the development of its excretory system' -- subject(s): Caecincola parvulus

The phylum with the most species that parasitize humans is Platyhelminthes, specifically the class Trematoda (flukes) and the class Cestoda (tapeworms). These parasites can cause diseases such as schistosomiasis and cysticercosis in humans.

Newton Edward Kingston has written:

'On the morphology and life cycles of the trematodes, Brachylecithum orfi, Kingston and Freeman, 1959, and Tanaisia zarudnyi (Skrjabin, 1924) Byrd and Denton, 1950, from the ruffed grouse, Bonasa umbellus L' -- subject(s): Trematoda

Sachu Yamaguchi has written:

'Digenetic Trematodes of fishes' -- subject(s): Fishes, Trematoda, Parasites

'Systema helminthum' -- subject(s): Helminthology, Intestinal and parasitic Worms, Worms, Intestinal and parasitic

'Monogentic trematodes of Hawaiian fishes' -- subject(s): Fishes, Tematoda, Parasites

Flatworms are divided into two groups, parasitic and nonparasitic. The parasitic types, which live off of other organisms, consist of Cestoda, Trematoda, and Monogenea flatworms.

Platyhelminthes as a phylum is divided into 4 classes. The tapeworm class (Cestoda) is endoparasitic. This means they live parasitically inside a host. There is also the ectoparasitic class Monogenea which lives parasitically on the outside of a host.

There are marine specimens and those that live in other moist environments. This is the class Turbellaria.

Satyu Yamaguti has written:

'Systema Helminthum' -- subject(s): Classification, Helminthology, Helminths, Parasites, Trematoda, Vertebrates, Worms

'Illustrated keys to the adult culicine mosquitos of America north of Mexico, with notes on general morphology and biology of genera' -- subject(s): Mosquitoes

'Parasitic copepods from fishes of Celebes and Borneo' -- subject(s): Copepoda

Emile A. Malek has written:

'Snail hosts of schistosomiasis and other snail-transmitted diseases in tropical America' -- subject(s): Handbooks, manuals, Identification, Parasitic diseases, Schistosomiasis, Snails, Snails as carriers of disease, Transmission

'Laboratory guide and notes for medical malacology' -- subject(s): Gastropoda, Laboratory manuals, Nematoda, Snails, Snails as carriers of disease, Trematoda

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Edwin Linton has written:

'Parasites of fishes of the Woods Hole region' -- subject(s): Fishes, Diseases, Parasites

'Notes on Entozoa of marine fishes of New England' -- subject(s): Accessible book, Fishes, Parasites

'Fish parasites collected at Woods Hole in 1898' -- subject(s): Accessible book

'Trematodes from fishes mainly from the Woods Hole region, Massachusetts' -- subject(s): Fishes, Parasites, Trematoda

The simplest bilateral animal is considered to be a flatworm, such as a planarian. These animals have a simple body structure with bilateral symmetry, a central nervous system, and a digestive system. They are an example of simple, yet successful, bilateral organisms.

Flatworms are classified into three main classes: Turbellaria (free-living flatworms, such as planarians), Trematoda (flukes, which are parasitic flatworms), and Cestoda (tapeworms, also parasitic). Each class has distinct characteristics and lifestyles.

There are different types of worms, including earthworms, roundworms, flatworms, and tapeworms. Each type of worm has unique characteristics and can serve various ecological roles or pose health risks to humans and animals.

Platyhelminthes, also known as flatworms, are characterized by a flattened body shape with bilateral symmetry. They lack a body cavity (coelom) and possess a primitive nervous system. Many flatworms are parasitic and have simple digestive systems with a single opening for both ingestion and waste elimination.

The flatworms, or Platyhelminthes or Plathelminthes are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates. Unlike other bilaterians, they are acoelomates, (having no body cavity), and no specialized circulatory and respiratory organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. The digestive cavity has only one opening for both the ingestion (intake of nutrients) and egestion (removal of undigested wastes); as a result, the food cannot be processed continuously.

In traditional zoology texts, Platyhelminthes are divided into Turbellaria, which are mostly nonparasitic animals such as planarians, and three entirely parasitic groups: Cestoda, Trematoda and Monogenea; however, since the turbellarians have since been proven not to be monophyletic, this classification is now deprecated. Free-living flatworms are mostly predators, and live in water or in shaded, humid terrestrial environments such as leaf litter. Cestodes (tapeworms) and trematodes (flukes) have complex life-cycles, with mature stages that live as parasites in the digestive systems of fish or land vertebrates, and intermediate stages that infest secondary hosts. The eggs of trematodes are excreted from their main hosts, whereas adult cestodes generate vast numbers of hermaphroditic, segment-like proglottids which detach when mature, are excreted, and then release eggs. Unlike the other parasitic groups, the monogeneans are external parasites infesting aquatic animals, and their larvae metamorphose into the adult form after attaching to a suitable host.

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Transmission of parasites occurs when parasites are passed from one host to another, either directly through physical contact or indirectly through vectors such as mosquitoes or fleas. This can happen through activities like sharing contaminated food or water, sexual contact, or exposure to infected soil. Parasites can also be transmitted from animals to humans, or vice versa.

Organisms are classified into seven main taxonomic ranks: kingdom, phylum, class, order, family, genus, and species. This system of classification helps scientists organize and categorize the immense diversity of living organisms based on their shared characteristics and evolutionary relationships.