Monogeneans, members of the class Monogenea, are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host.

With over 4,000 species, the class Monogenea consists of parasitic flatworms that belong to the Phylum Platyhelminthes. They are commonly found in aquatic habitats where the majority of species exist as ectoparasites of fish and other organisms.

Monogenea is a Class of ecologically and economically significant platyhelminth parasites of freshwater and marine hosts. Contamination of the environment has been shown to variably affect parasites resulting in alterations at the population and organismal levels.

Monogeneans are a group of metazoan parasites that commonly infect the skin and gills of marine and freshwater fish. More than 100 families (approximately 1500 species) of monogeneans may affect fish. Any fish can be susceptible.

The majority of the Monogenea are ectoparasitic (externally parasitic) on fish. The eggs hatch in water. The larva, known as an oncomiracidium, is heavily ciliated (has actively moving hairlike projections) and bears numerous posterior hooks.

The Monogenea are a group of 6000–7000 species, mainly ectoparasites of gill and skin of fish and more rarely of amphibians (Figs 1, 2 A, 3A, B). Monogeneans are common in many seas, and their presence in a range of cultured species has been responsible for mortality or a …

2021年7月21日 · Monogenea Definition noun A group of ectoparasitic tapeworms of the phylum Platyhelminthes Supplement The phylum Platyhelminthes (flatworms) is comprised of parasitic worms characterized mainly by their flattened, bilaterally symmetrical body.

The monogeneans are typically (often economically important) ectoparasites of the skin and/or gills of fish, amphibians, reptiles, cetaceans, or cephalopods; some species become endoparasitic by inhabiting the nose, the pharynx, cloaca, bladder, etc. (Table 1).

Monogenea comprise a species-rich group of neodermatan platyhelminths characterised by the following features: 1). All possess a posterior attachment organ, the opisthaptor, which is usually armed with a variety of hooks, bars, suckers and clamps, for attachment to the final host; 2).

Monogeneans are found worldwide in freshwater and marine environments. Many monogeneans are strictly host-specific; that is, they are limited to a single or a few closely related hosts. Skin parasites may be widespread on the surface of the host's skin or concentrated in specific areas.