Diplectanidae

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Diplectanidae
Pseudorhabdosynochus morrhua.jpg
Pseudorhabdosynochus morrhua
Scientific classification
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Diplectanidae

Monticelli, 1903

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The Diplectanidae are a family of monopisthocotylean monogeneans. They are all parasitic on the gills of fish (marine or freshwater). Diplectanids are small animals, generally around 1 mm in length. As parasites, they can be extremely numerous, up to several thousand on an individual fish.

History

The family Diplectanidae was proposed by the Italian parasitologist Monticelli in 1903 (as subfamily Diplectaninae).[1] The status of the family and its components was later examined by various authors, including Johnston & Tiegs (1922),[2] Price (1937),[3] Bychowsky (1957),[4] Yamaguti (1963),[5] and Oliver (1987).[6]

Morphology

Diplectanids are diagnosed by the combination of these three characters:

  • Presence of accessory adhesive organs on dorsal and ventral part of the haptor, called squamodiscs when they are made up of rodlets and lamellodiscs when they include lamellae
  • In the haptor, three transversal bars (one ventral, two lateral (dorsal), connected to two pairs of hooks (one pair dorsal, one pair ventral)
  • A germarium (or ovary) which is anterior to the testis and loops around the right intestinal caecum

Included genera

The 32 genera recognized in WorMs are:

References

  1. Monticelli, F.C. (1903) Per una nuova classificazione degli “Heterocotylea”. Monitore Zoologico Italiano, 14, 334–336.
  2. Johnston, T.H. & Tiegs, O.W. (1922) New Gyrodactyloid Trematodes from Australian fishes together with a reclassification of the Super-Family Gyrodactyloidea. Proceedings of the Linnean Society of New South Wales, 47, 83–131. PDF on BHL open access publication - free to read
  3. Price, E. W. 1937: North American Monogenetic Trematodes. I. The superfamily Gyrodactyloidea. Journal of the Washington Academy of Sciences, 27, 146-164. PDF open access publication - free to read
  4. Bychowsky, B. E. (1957) Monogenetic Trematodes. Their systematic and phylogeny. Akad. Nauka. USSR. English translation by the American Institute of Biological Science, Washington. 509 pp.doi:10.5962/bhl.title.7475 open access publication - free to read
  5. Yamaguti, S. (1963) Systema Helminthum IV. Monogenea and Aspidocotylea. London-New York, Interscience Publishers. 699 pp.
  6. 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 open access publication - free to read

External links