| Pseudorhabdosynochus regius | |
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| Pseudorhabdosynochus regius | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Class: | Monogenea |
| Order: | Dactylogyridea |
| Family: | Diplectanidae |
| Genus: | Pseudorhabdosynochus |
| Species: | P. regius |
| Binomial name | |
| Pseudorhabdosynochus regius Chaabane, Neifar & Justine, 2015 | |
Pseudorhabdosynochus regius is a diplectanid monogenean parasitic on the gills of the mottled grouper (Mycteroperca rubra). [1]
The specific epithet, regius, is from the Latin adjective meaning "royal". It was given in reference to the French name of the type-host, Mérou royal. [1]
Pseudorhabdosynochus regius is a small monogenean, about 600-1300 μm in length. The species has the general characteristics of other species of Pseudorhabdosynochus , with a flat body and a posterior haptor, which is the organ by which the monogenean attaches itself to the gill of is host. The haptor bears two squamodiscs, one ventral and one dorsal, which are small, with a length of 20-40 μm, and made up of only 10-11 rows of rodlets.
The sclerotized male copulatory organ, or "quadriloculate organ", has the shape of a bean with four internal chambers, as in other species of Pseudorhabdosynochus . [2] The vagina includes a sclerotized part, which is a complex structure, 26-35 μm in length. It exhibits a trumpet in continuity with the primary canal, a straight primary canal, and primary and secondary chambers included in a common sclerotised mass along the primary canal. The sclerotised vagina is the structure used by systematicians to differentiate species of Pseudorhabdosynochus . The closest relatives of P. regius, based on the structure of its sclerotised vagina, are species mostly found in the Mediterranean Sea and parasites on species of Mycteroperca . [1]
The type-host of Pseudorhabdosynochus regius is the grouper mottled grouper (Mycteroperca rubra) and the species has not been found in another host. The type-locality if off Dakar, Senegal. The monogenean has also been found on fish of the same species caught off Sfax, Tunisia and off Tripoli, Libya. Thus, P. regius is known from the Mediterranean Sea and the Eastern Atlantic. Only 14 species of diplectanids parasitic on groupers are known in the Mediterranean Sea and P. regius is one of them. [1]
Pseudorhabdosynochus epinepheli is a diplectanid monogenean parasitic on the gills of species of groupers. It is the type species of the genus Pseudorhabdosynochus Yamaguti, 1958.
Pseudorhabdosynochus kritskyi is a diplectanid monogenean parasitic on the gills of the gag, Mycteroperca microlepis. The species has been described by Dyer, Williams and Bunkley-Williams in 1995 and redescribed successively by Yang, Gibson and Zeng in 2005 and by Kritsky, Bakenhaster and Adams in 2015. The name of the species honours the American parasitologist Delane C. Kritsky.
Pseudorhabdosynochus capurroi is a diplectanid monogenean parasitic on the gills of the Black grouper, Mycteroperca bonaci. It was described by Vidal-Martínez and Mendoza-Franco in 1998 and redescribed successively by Yang, Gibson and Zeng in 2005 and by Kritsky, Bakenhaster and Adams in 2015.
Pseudorhabdosynochus hyphessometochus is a diplectanid monogenean parasitic on the gills of the yellowmouth grouper, Mycteroperca interstitialis. It has been described by Kritsky, Bakenhaster and Adams in 2015.
Pseudorhabdosynochus contubernalis is a diplectanid monogenean parasitic on the gills of the Scamp, Mycteroperca phenax. It has been described by Kritsky, Bakenhaster and Adams in 2015.
Pseudorhabdosynochus mycteropercae is a diplectanid monogenean parasitic on the gills of the tiger grouper, Mycteroperca tigris (Serranidae). It has been described by Kritsky, Bakenhaster and Adams in 2015.
Pseudorhabdosynochus beverleyburtonae is a diplectanid monogenean parasitic on the gills of the dusky grouper, Epinephelus marginatus. It has been described by Guy Oliver in 1984 as Cycloplectanum beverleyburtonae, redescribed by Oliver in 1987, transferred to the genus Pseudorhabdosynochus by Kritsky & Beverley-Burton in 1986 as Pseudorhabdosynochus beverleyburtonae, redescribed by Kritsky, Bakenhaster and Adams in 2015, and redescribed in 2016 by Chaabane, Neifar, Gey & Justine.
Pseudorhabdosynochus malabaricus is a diplectanid monogenean parasitic on the gills of the malabar grouper, Epinephelus malabaricus. It has been described in 2007.
Pseudorhabdosynochus maaensis is a diplectanid monogenean parasitic on the gills of the malabar grouper, Epinephelus malabaricus. It has been described in 2007.
Pseudorhabdosynochus marcellus is a diplectanid monogenean parasitic on the gills of the malabar grouper, Epinephelus malabaricus. It was described in 2007.
Pseudorhabdosynochus manipulus is a diplectanid monogenean parasitic on the gills of the malabar grouper, Epinephelus malabaricus. It was first described in 2007.
Pseudorhabdosynochus venus is a diplectanid monogenean parasitic on the gills of the grouper Epinephelus howlandi. It has been described in 2006.
Pseudorhabdosynochus variabilis is a diplectanid monogenean parasitic on the gills of the grouper Epinephelus morrhua. It has been described in 2008.
Pseudorhabdosynochus hayet is a diplectanid monogenean parasitic on the gills of the mottled grouper .
Pseudorhabdosynochus oliveri is a diplectanid monogenean parasitic on the gills of the dusky grouper.
Pseudorhabdosynochus dolicocolpos is a diplectanid monogenean parasitic on the gills of groupers. It has been described in 2007 by Lassad Neifar & Louis Euzet. The species name refers to the size of the vagina and is derived from the Greek words “dolicos” meaning long and “colpos” vagina. The species has been redescribed by Amira Chaabane, Lassad Neifar, and Jean-Lou Justine in 2017.
Pseudorhabdosynochus enitsuji is a diplectanid monogenean parasitic on the gills of groupers. It has been described in 2007 by Lassad Neifar & Louis Euzet. The name of the species honours French parasitologist Jean-Lou Justine . The species has been redescribed by Amira Chaabane, Lassad Neifar, and Jean-Lou Justine in 2017, from the type-material and additional specimens.
Pseudorhabdosynochus sinediscus is a diplectanid monogenean parasitic on the gills of groupers. It has been described in 2007 by Lassad Neifar & Louis Euzet. The name refers to the absence of squamodiscs and is derived from the Latin “sine”, indicating absence, and “discus”, contraction of “squamodiscus”.
Pseudorhabdosynochus sosia is a diplectanid monogenean parasitic on the gills of groupers. It has been described in 2007 by Lassad Neifar & Louis Euzet. According to Neifar & Euzet, the name of the species refers to Sosia, who in Plautus’ comedy Amphitryon confronts his double, and to the resemblance of the vagina of P. sosia to that of P. beverleyburtonae.
Pseudorhabdosynochus riouxi is a species of diplectanid monogenean parasitic on the gills of dusky grouper Mycteroperca marginata. It was described by Guy Oliver in 1986 as Cycloplectanum riouxi, then transferred to the genus Pseudorhabdosynochus by Santos, Buchmann & Gibson in 2000. The species has been redescribed by Chaabane et al. in 2017.
