| Microcotyle constricta | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Class: | Monogenea |
| Order: | Mazocraeidea |
| Family: | Microcotylidae |
| Genus: | Microcotyle |
| Species: | M. constricta |
| Binomial name | |
| Microcotyle constricta Robinson, 1961 | |
Microcotyle constricta is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae. [1]
Microcotyle constricta was first described by Robinson in 1961 from the gills of the New Zealand blue cod Parapercis colias (Pinguipedidae) based on one specimens (one sectioned). [1] In 1965, Dillon & Hargis redescribed this species based on 20 specimens and gave additional information regarding buccal organs, seminal receptacle position and egg. [2]
Microcotyle constricta has the general morphology of all species of Microcotyle , with a symmetrical elongate body, rounded anteriorly and comprising an anterior part which contains most organs and a posterior part called the haptor. The haptor is symmetrical, and bears 74-82 rectangular clamps, arranged as two rows, one on each side. The clamps of the haptor attach the animal to the gill of the fish. There are also two oval septate buccal suckers at the anterior extremity. The digestive organs include an anterior, terminal mouth, a rounded pharynx, an enlarged oesophagus immediately posterior to the pharynx and, which extends to the level of the posterior margin of the genital atrium, and a posterior intestine with two lateral branches provided with numerous secondary branches. The left branch extends into the haptor. Each adult contains male and female reproductive organs. The reproductive organs include an anterior circular genital atrium located approximately midway between the buccal suckers and body constriction, armed with numerous elongate rose-thorn shaped spines, a medio-dorsal vagina located at level of body constriction, a single tubular coiled ovary and 18-25 follicular testes which are posterior to the ovary and closely packed. [1]
Microcotyle constricta most closely resembles Microcotyle ditrematis , but differs in clamps' width and structure; the rounded genital atrium; the rounded anterior end of body and the constriction at level of the vaginal pore. [1]
The type-host of Microcotyle constricta is the New Zealand blue cod Parapercis colias (Pinguipedidae). The type-locality is off New Zealand. [1] Dillon & Hargis reported this species from the type-host and locality. [2]
Microcotyle argenticus is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae. It was described from the gills of the silver pomfret Pampus argenteus (Stromateidae) from Karachi coast off Pakistan.
Microcotyle bothi is a species of monogenean, parasitic on the gills of a marine fish collected in Hawaii. It belongs to the family Microcotylidae.
Microcotyle brevis is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle pomacanthi is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle poronoti is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle longirostri is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle nemadactylus is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle neozealanica is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Bivagina centrodonti is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle emmelichthyops is a species of monogenean, parasitic on the gills of a marine fish in Hawaii. It belongs to the family Microcotylidae.
Microcotyle polymixiae is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae. It was first described and illustrated based on 82 whole mounts, from the gills of the silver eye, Polymixia japonica (Polymixiidae) off Hawaii.
Microcotyle victoriae is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle peprili is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle pempheri is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle jonii is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae. It was described from the gills of Lutjanus jonii (Lutjanidae) from Karachi coast off Pakistan.
Microcotyle rubrum is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae. It was described from the gills of the tigertooth croaker Otolithes ruber (Sciaenidae) from Karachi coast off Pakistan.
Microcotyle pseudopercis is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae.
Microcotyle inglisi is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae. It was first described and illustrated based on 5 specimens from the gills of the Indian mackerel Scomber microlepidotus (Scombridae) off Odisha, India..
Microcotyle korathai is a species of monogenean, parasitic on the gills of a marine fish. It belongs to the family Microcotylidae. It was first described and illustrated based on 6 specimens from the gills of the Indian mackerel Scomber microlepidotus (Scombridae) off Odisha, India..
Pseudaxine bivaginalis is a species of monogenean flatworm, which is parasitic on the gills of a marine fish. It belongs to the family Gastrocotylidae.