| Pomphorhynchidae | |
|---|---|
 | |
| Pomphorhynchus sp. in a bluefish | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Acanthocephala |
| Class: | Palaeacanthocephala |
| Order: | Echinorhynchida |
| Family: | Pomphorhynchidae Yamaguti, 1939 |
Pomphorhynchidae is a family of parasitic worms from the order Echinorhynchida.
Pomphorhynchidae has five genera which contain the following species: [1] [lower-alpha 1]
LongicollumYamaguti, 1935 contains many species:
L. pagrosomi was found parasitizing the Atlantic horse mackerel (Trachurus trachurus) in the bay of Gemlik, Turkey. The body was between 5036 and 10164 μm long and 478 and 878) μm wide. The proboscis was cylindrical, wider anteriorly, between 2310 and 5313 μm long, and armed with 11 or 12 rows of hooks comprising 11 to 13 hooks in each. The anterior hooks were smaller than the posterior, measuring 34 (24 – 42) μm, 42 (40 – 44) μm, to 61 (54 – 70) μm long. The short proboscis sac consisted of two membranes. The lemnisci were level with the proboscis. One immature male sample had two spherical testes, 216 × 272 μm in diameter. The copulatory bursa was 80 by 140 μm. The cement glands were indistinct. The eggs measured between 70 and 210 μm long and 17 and 52 μm wide. [2]
ParalongicollumAmin, Bauer & Sidorov, 1991 contains two species:
Pomphorhynchus' Monticelli, 1905 contains many species:
P. laevis is a parasitic acanthocephalan worm that can influence the reaction of its intermediate host, the freshwater amphipod Gammarus pulex , to the smell of potential predators like perch, Perca fluviatilis . [3] [4]
P. laevis facilitates its movement from its initial host. Research has demonstrated that organisms affected by the parasite exhibit a diminished or inverted avoidance response to the scent of predators when compared to uninfested specimens, supporting the notion that the parasite manipulates its host, with the goal of passing itself on to its definitive host, a freshwater fish. Affected specimens also demonstrate vibrant changes in color, making them more visible to predators. [5] [6]
This worm swells its proboscis to press microneedles into the intestinal wall, with a very strong adhesive force. This has inspired a structural skin graft adhesive that sticks strongly but has minimal tissue damage while in place and upon removal. [7]
TenuiproboscisYamaguti, 1935 contains many species:
Acanthocephala is a group of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to pierce and hold the gut wall of its host. Acanthocephalans have complex life cycles, involving at least two hosts, which may include invertebrates, fish, amphibians, birds, and mammals. About 1420 species have been described.
Quadrigyridae is the only family within Gyracanthocephala, an order of parasitic worms of class Eoacanthocephala. This family contains two subfamilies, ten genera and about 92 species.
Pomphorhynchus laevis is an endo-parasitic acanthocephalan worm, with a complex life cycle, that can modify the behaviour of its intermediate host, the freshwater amphipod Gammarus pulex. P. laevis does not contain a digestive tract and relies on the nutrients provided by its host species. In the fish host this can lead to the accumulation of lead in P. laevis by feeding on the bile of the host species.
Acanthocephalus is a genus of parasitic worms. One of the species in this genus is Acanthocephalus anguillae, a fish parasite. Acanthocephalans are also found in humans and primates, causing a common zoonotic infection called "human acanthocephaliasis". While pathogens can be transferred among animals and humans, the main source of human acanthocephaliasis is the diet of infected raw fish and insects. Because they are lacking circulatory, respiratory, and digestive systems, Acanthocephalus are exceptionally well-adapted to a symbiotrophic existence.
The thorny-headed worm family Polymorphidae contains endoparasites which as adults feed mainly in fish and aquatic birds. When this taxon was erected by Meyer in 1931, a subfamily Polymorphinae was established in it. As the Polymorphidae as presently understood would then be monotypic, with no basal genera outside the Polymorphinae, the proposed subfamily is redundant for the time being and therefore most modern treatments simply omit it. Polymorphus minutus is an economically significant parasite in goose and duck farming.
Echinorhynchus is a genus of acanthocephalan parasitic worms. They parasitize a wide variety of fishes from both marine and fresh waters. The intermediate host is usually a crustacean.
Centrorhynchidae is a family of parasitic worms. Three species of these thorny-headed worms in the genus Centrorhynchus were found to parasitize birds of prey and owls Slovakia. These hosts include Buteo buteo, Buteo rufinus, Falco tinnunculus, Asio otus, Strix aluco, Strix uralensis and Tyto alba.
Arhythmacanthidae is a family of parasitic worms from the order Echinorhynchida.
Cavisomidae are a family of parasitic worms from the order Echinorhynchida.
Diplosentidae is a family of parasitic worms from the order Echinorhynchida.
Echinorhynchidae is a family of acanthocephalan parasitic worms from the order Echinorhynchida. The adult worms live in the intestines of fishes, amphibians and reptiles. The family contains the following genera, organised by subfamily.
Leptorhynchoididae is a family of parasitic worms from the order Echinorhynchida.
Rhadinorhynchidae is a family of parasitic worms from the order Echinorhynchida.
Plagiorhynchidae is a family of parasitic Acanthocephalan worms.
Telosentis exiguus is a widespread intestinal parasitic worm. Its hosts are marine and brackish water fish of the Mediterranean basin.
Acanthocephaloides is a genus of parasitic worms belonging to the family Arhythmacanthidae.
Acanthogyrus is a genus of parasitic worms belonging to the family Quadrigyridae. The species of this genus are found in Africa.
Neoechinorhynchus is a genus of parasitic worms belonging to the family Neoechinorhynchidae.
Pomphorhynchus is a genus of parasitic worms belonging to the family Pomphorhynchidae.
Paralongicollum is a genus in Acanthocephala, the thorny-headed worms, also known as spiny-headed worms.
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