Pseudorhabdosynochus tumeovagina

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Pseudorhabdosynochus tumeovagina
Parasite150040-fig21 Pseudorhabdosynochus tumeovagina Kritsky, Bakenhaster & Adams, 2015 - FIGS 160-167.tif
Body and sclerotised parts
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Monogenea
Order: Dactylogyridea
Family: Diplectanidae
Genus: Pseudorhabdosynochus
Species:
P. tumeovagina
Binomial name
Pseudorhabdosynochus tumeovagina
Kritsky, Bakenhaster & Adams, 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. [1]

Contents

Description

Pseudorhabdosynochus tumeovagina is a small monogenean, 0.4-0.7 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.
Kritsky, Bakenhaster & Adams (2015) noted that the species was based on specimens obtained from one of two speckled hind examined for gill parasites and held in the ichthyology collection of the Florida Fish and Wildlife Conservation Commission. The infected speckled hind was collected in 1972 and was not fixed and preserved with its external parasites in mind. As a result, the specimens of Pseudorhabdosynochus tumeovagina from this fish were in generally poor shape, and many of the internal features, particularly those of the male and female reproductive systems, could not be determined. Nonetheless, the unique vaginal sclerite clearly indicated the species to be new to science. [1]

Etymology

According to Kritsky, Bakenhaster & Adams (2015), the specific name of Pseudorhabdosynochus tumeovagina is from Latin (tume/o = to be inflated + vagina) and refers to the bulbous portion of the distal tube of the vaginal sclerite. [1]

Diagnosis

Kritsky, Bakenhaster & Adams (2015) wrote that Pseudorhabdosynochus tumeovagina is differentiated from all previously described species of Pseudorhabdosynochus from the region by having an expanded (bulbous) distal tube and a small chamber of the vaginal sclerite. It most closely resembles Pseudorhabdosynochus williamsi , by possessing a male copulatory organ having an elongate and curved distal cone and comparatively thick-walled chambers. Pseudorhabdosynochus tumeovagina differs from P. williamsi in the morphology of the distal tube of the vaginal sclerite (bulbous expansion of the distal tube lacking in P. williamsi). [1]

Hosts and localities

The speckled hind, Epinephelus drummondhayi, is the type-host of Pseudorhabdosynochus tumeovagina. Epinephelus drummondhayi.jpg
The speckled hind, Epinephelus drummondhayi , is the type-host of Pseudorhabdosynochus tumeovagina.

The type-host and only recorded host of Pseudorhabdosynochus tumeovagina is the speckled hind, Epinephelus drummondhayi (Serranidae: Epinephelinae). The type-locality and only recorded locality is Florida Middle Grounds, Gulf of Mexico. [1]

Related Research Articles

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<i>Pseudorhabdosynochus monaensis</i> Species of flatworm

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<i>Pseudorhabdosynochus mycteropercae</i> Species of flatworm

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<i>Pseudorhabdosynochus mizellei</i> Species of flatworm

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<i>Pseudorhabdosynochus woodi</i> Species of flatworm

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<i>Pseudorhabdosynochus beverleyburtonae</i> Species of flatworm

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References

  1. 1 2 3 4 5 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. Open Access logo PLoS transparent.svg
  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 Open Access logo PLoS transparent.svg
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