Pseudorhabdosynochus amplidiscatus

Pseudorhabdosynochus amplidiscatus is a diplectanid monogenean parasitic on the gills of groupers. It was described as Diplectanum amplidiscatum by Bravo-Hollis in 1954 [1] and transferred to the genus Pseudorhabdosynochus by Kritsky and Beverley-Burton in 1986.[2]

Pseudorhabdosynochus amplidiscatus
Scientific classification
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Monogenea
Order: Dactylogyridea
Family: Diplectanidae
Genus: Pseudorhabdosynochus
Species:
P. amplidiscatus
Binomial name
Pseudorhabdosynochus amplidiscatus
(Bravo-Hollis, 1954) Kritsky & Beverley-Burton, 1986
Synonyms
  • Diplectanum amplidiscatum Bravo-Hollis, 1954
  • Cycloplectanum americanum (Bravo-Hollis, 1954) Oliver, 1968 (pro parte)
  • Pseudorhabdosynochus amplidiscatum

Description

Pseudorhabdosynochus amplidiscatus 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.

The species was redescribed by Oliver in 1987[3] and by Yang, Gibson and Zeng in 2005.[4]

Hosts and localities

The spotted sand bass (Paralabrax maculatofasciatus) is the type-host of Pseudorhabdosynochus amplidiscatus.[1] The species has been described from fish caught off the Pacific coast of Mexico. It has also been recorded from the groupers Epinephelus labriformis and Epinephelus analogus from the Pacific coast of Mexico and Panama.[5]

References
  1. Bravo-Hollis, M. 1954: Diplectanum amplidiscatum n. sp., Trématode monogénétique des branchies d'un poisson marin. Annales de Parasitologie Humaine et Comparée, 24, 37-41.
  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.
  3. Oliver, G. (1987). Les Diplectanidae Bychowsky, 1957 (Monogenea, Monopisthocotylea, Dactylogyridea). Systématique. Biologie. Ontogénie. Écologie. Essai de phylogenèse. Thèse d'État, Académie de Montpellier, Université des Sciences et Techniques du Languedoc, France. doi:10.6084/m9.figshare.1295274
  4. Yang, Tingbao; Gibson, David I.; Zeng, Bijian (2005). "Pseudorhabdosynochus summanoides n. sp. (Monogenea: Diplectanidae) from Epinephelus coioides in Dapeng Bay, South China Sea, with observations on several similar species of Pseudorhabdosynochus Yamaguti, 1958". Systematic Parasitology. 62 (3): 221–239. doi:10.1007/s11230-005-5497-4. ISSN 0165-5752. PMID 16315082.
  5. Mendoza-Franco, Edgar F.; Violante-González, Juan; Rojas Herrera, Agustín A. (2011). "Six new and one previously described species of Pseudorhabdosynochus (Monogenoidea, Diplectanidae) infecting the gills of groupers (Perciformes, Serranidae) from the Pacific coasts of Mexico and Panama". Journal of Parasitology. 97 (1): 20–35. doi:10.1645/GE-2716.1. ISSN 0022-3395. PMID 21348602.
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