Pseudorhabdosynochus caledonicus

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Pseudorhabdosynochus caledonicus
Pseudorhabdosynochus caledonicus body.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Monogenea
Order: Dactylogyridea
Family: Diplectanidae
Genus: Pseudorhabdosynochus
Species:
P. caledonicus
Binomial name
Pseudorhabdosynochus caledonicus
Justine, 2005

Pseudorhabdosynochus caledonicus is a diplectanid monogenean parasitic on the gills of the Blacktip grouper, Epinephelus fasciatus . It has been described in 2005. [1]

Contents

Description

Female (left) and male (right) sclerotised organs Pseudorhabdosynochus caledonicus male and female organs.jpg
Female (left) and male (right) sclerotised organs

Pseudorhabdosynochus caledonicus is a small monogenean, 0.5 mm 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.

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. It has been described as "a heavily sclerotised ‘trumpet’, followed by sclerotised test-tube shaped cylinder, with heavily sclerotised structure associated laterally with cylinder and a lateral structure, roughly star-shaped, with small chamber communicating with lumen of cylinder". [1]

Etymology

Pseudorhabdosynochus caledonicus was named for the type-locality, New Caledonia, in the South Pacific.

Hosts and localities

The Blacktip grouper, Epinephelus fasciatus is the type-host of Pseudorhabdosynochus caledonicus Epinephelus fasciatus JNC1284.JPG
The Blacktip grouper, Epinephelus fasciatus is the type-host of Pseudorhabdosynochus caledonicus

The type-host and only recorded host of P. caledonicus is the Blacktip grouper, Epinephelus fasciatus (Serranidae: Epinephelinae). The type-locality and only recorded locality is off Nouméa, New Caledonia. [1] Only about 20% of the host fish were infested. [1] [3]

Related Research Articles

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Pseudorhabdosynochus melanesiensis is a diplectanid monogenean parasitic on the gills of the grouper, Epinephelus merra. It was described in 1958 as Diplectanum melanesiensis then transferred to the genus Pseudorhabdosynochus by Kritsky & Beverley-Burton in 1986.


Pseudorhabdosynochus vagampullum is a species of diplectanid monogenean parasitic on the gills of a grouper. It was described in 1969, from eight specimens, under the name Diplectanum vagampullum and transferred to the genus Pseudorhabdosynochus in 1986. The species has been redescribed several times.

References

  1. 1 2 3 4 Justine, Jean-Lou (2005). "Species of Pseudorhabdosynochus Yamaguti, 1958 (Monogenea: Diplectanidae) from Epinephelus fasciatus and E. merra (Perciformes: Serranidae) off New Caledonia and other parts of the Indo-Pacific Ocean, with a comparison of measurements of specimens prepared using different methods, and a description of P. caledonicus n. sp". Systematic Parasitology. 62 (1): 1–37. doi:10.1007/s11230-005-5480-0. ISSN   0165-5752. PMID   16132868. S2CID   35119181.
  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. Open Access logo PLoS transparent.svg
  3. ↑ Hinsinger, Damien D.; Justine, Jean-Lou (2006). "The ' Pseudorhabdosynochus cupatus group' (Monogenea: Diplectanidae) on Epinephelus fasciatus, E. howlandi, E. rivulatus and E. merra (Perciformes: Serranidae) off New Caledonia, with descriptions of Pseudorhabdosynochus cyathus n. sp. and P. calathus n. sp". Systematic Parasitology. 64 (2): 69–90. doi: 10.1007/s11230-005-9018-2 . ISSN   0165-5752. PMID   16773473.
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