Pseudorhabdosynochus contubernalis

Pseudorhabdosynochus contubernalis
	Body and sclerotised parts
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Platyhelminthes
Class:	Monogenea
Order:	Dactylogyridea
Family:	Diplectanidae
Genus:	Pseudorhabdosynochus
Species:	P. contubernalis
Binomial name
	Pseudorhabdosynochus contubernalis; Kritsky, Bakenhaster & Adams, 2015

Last updated December 09, 2023

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. ^[1]

Description

Pseudorhabdosynochus contubernalis is a small monogenean. 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. 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.

Etymology

The specific name (a noun) is from Latin (contubernalis = a companion or comrade) and refers to its co-occurrence with P. vascellum on Mycteroperca phenax .^[1]

Diagnosis

Kritsky, Bakenhaster & Adams (2015) wrote that Pseudorhabdosynochus contubernalis most closely resembles P. vascellum . It differs from P. vascellum by its larger overall size (body length about 700 μm vs. 500 μm) and length of the male copulatory organ (about 60 μm vs. 40 μm). In addition, the proximal two chambers of the male copulatory organ of P. contubernalis have comparatively thin walls which frequently have collapsed or are absent. Pseudorhabdosynochus contubernalis is a member of the group of species of Pseudorhabdosynochus parasitizing groupers assigned to Mycteroperca and characterized by having a distally reflexed tube and a single chamber in the vaginal sclerite. The group includes P. kritskyi , P. capurroi , P. vascellum , P. contubernalis, P. hyphessometochus , and P. mycteropercae . P. contubernalis differs from all of these species by having a scaled tegument on the peduncle.^[1]

Hosts and localities

The type-host and only recorded host of Pseudorhabdosynochus vascellum is the scamp, Mycteroperca phenax (Serranidae: Epinephelinae). The type-locality, and only known locality, is Pinnacles Reef System, off Mississippi Sound, South of Pascagoula, Mississippi, Mississippi.^[1]

Related Research Articles

Pseudorhabdosynochus americanus is a diplectanid monogenean parasitic on the gills of groupers. It was described as Diplectanum americanum by Price in 1937 and transferred to the genus Pseudorhabdosynochus by Kritsky and Beverley-Burton in 1986. The species was redescribed by Kritsky, Bakenhaster and Adams in 2015.

Pseudorhabdosynochus yucatanensis is a diplectanid monogenean parasitic on the gills of the red grouper, Epinephelus morio. It was described by Vidal-Martínez, Aguirre-Macedo & Mendoza-Franco in 1997 and redescribed by Kritsky, Bakenhaster and Adams in 2015.

Pseudorhabdosynochus justinella is a diplectanid monogenean parasitic on the gills of the red grouper, Epinephelus morio. It has been described by Kritsky, Bakenhaster and Adams in 2015.

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 firmicoleatus is a diplectanid monogenean parasite on the gills of the Yellowedge grouper, Epinephelus flavolimbatus and the Snowy grouper, Epinephelus niveatus. It was described by Kritsky, Bakenhaster and Adams in 2015.

Pseudorhabdosynochus mcmichaeli 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 meganmarieae is a diplectanid monogenean parasitic on the gills of the Graysby, Cephalopholis cruentata. It has been described by Kritsky, Bakenhaster and Adams in 2015.

Pseudorhabdosynochus vascellum 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 monaensis is a diplectanid monogenean parasitic on the gills of the rock hind, Epinephelus adscensionis. It has been described by Dyer, Williams & Bunkley-Williams in 1994 and redescribed 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 williamsi is a diplectanid monogenean parasitic on the gills of the rock hind, Epinephelus adscensionis. It has been described by Kritsky, Bakenhaster and Adams in 2015.

Pseudorhabdosynochus mizellei is a diplectanid monogenean parasitic on the gills of the red hind, Epinephelus guttatus. It has been described by Kritsky, Bakenhaster and Adams in 2015. The species was named Diplectanum epinepheli by Mizelle & Wood but this name was not published and is a nomen nudum according to Kritsky, Bakenhaster & Adams (2015).

Pseudorhabdosynochus bunkleywilliamsae is a diplectanid monogenean parasitic on the gills of the Nassau grouper, Epinephelus striatus. It has been described by Kritsky, Bakenhaster and Adams in 2015.

Pseudorhabdosynochus woodi is a diplectanid monogenean parasitic on the gills of the red hind, Epinephelus guttatus. It has been described by Kritsky, Bakenhaster and Adams in 2015.

Pseudorhabdosynochus tumeovagina is a diplectanid monogenean parasitic on the gills of the speckled hind, Epinephelus drummondhayi. 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 hargisi is species of a diplectanid monogenean parasitic on the gills of the White grouper Epinephelus aeneus. It was described in 1984 as Diplectanum hargisi and transferred to the genus Pseudorhabdosynochus by Santos, Buchmann & Gibson in 2000. Its systematic position has been clarified by Kritsky, Bakenhaster & Adams in 2015, who differentiated it from Pseudorhabdosynochus americanus.

Pseudorhabdosynochus magnisquamodiscum is species of diplectanid monogenean parasitic on the gills of a fish. It was described in 1984 under the name Cycloplectanum magnisquamodiscum and later transferred to the genus Pseudorhabdosynochus.

References

1 2 3 4 Kritsky, Delane C.; Bakenhaster, Micah D.; Adams, Douglas H. (2015). "Pseudorhabdosynochus species (Monogenoidea, Diplectanidae) parasitizing groupers (Serranidae, Epinephelinae, Epinephelini) in the western Atlantic Ocean and adjacent waters, with descriptions of 13 new species". Parasite. 22: 24. doi:10.1051/parasite/2015024. ISSN 1776-1042. PMC 4536336 . PMID 26272242.
↑ Kritsky, D. C. & Beverley-Burton, M. 1986: The status of Pseudorhabdosynochus Yamaguti, 1958, and Cycloplectanum Oliver, 1968 (Monogenea: Diplectanidae). Proceedings of the Biological Society of Washington, 99, 17-20. PDF

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[KritskyBakenhaster2015-1] 1 2 3 4 Kritsky, Delane C.; Bakenhaster, Micah D.; Adams, Douglas H. (2015). "Pseudorhabdosynochus species (Monogenoidea, Diplectanidae) parasitizing groupers (Serranidae, Epinephelinae, Epinephelini) in the western Atlantic Ocean and adjacent waters, with descriptions of 13 new species". Parasite. 22: 24. doi:10.1051/parasite/2015024. ISSN 1776-1042. PMC 4536336 . PMID 26272242.

[Kritsky1986-2] Kritsky, D. C. & Beverley-Burton, M. 1986: The status of Pseudorhabdosynochus Yamaguti, 1958, and Cycloplectanum Oliver, 1968 (Monogenea: Diplectanidae). Proceedings of the Biological Society of Washington, 99, 17-20. PDF

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