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Scientific classification

Pérez 1908
Type species
Dermocystidium pusulum
(Pérez 1907) Pérez 1908

See text


Dermocystidium is a genus of cyst-forming, eukaryotic fish parasites,[2] the causative agents of dermocystidiosis.

Taxonomic history[edit]

The genus Dermocystidium was described in 1907. It was previously thought to be a genus of fungal parasites, related to the Thraustochytrida and Labyrinthulida (both those groups are now considered to be stramenopiles rather than fungi). Other biologists considered it to be a sporozoan protist.

It was subsequently identified as one of a group of fish parasites (the "DRIP clade") of previously uncertain affiliation, which were later identified as nonanimal, nonfungal opisthokonts,[3] and renamed as Ichthyosporea, and after expansion as Mesomycetozoa. Parasites of crustacea (Dermocystidium daphniae) and molluscs (Dermocystidium marinum) placed in this genus have been found to be likely a bacterium and an alveolate, respectively: Sayre, Gherna and Wergin (1983) concluded that Dermocystidium daphniae was likely identical to Pasteuria ramosa Metchnikoff, 1888,[4] while D. marinum has been reclassified as Perkinsus marinus.[5]

The frog parasite Dermocystidium ranae has recently been segregated as Amphibiocystidium ranae.[6]


  • Dermocystidium anguillae Spangenberg 1975— a gill parasite of eels
  • Dermocystidium branchialis Léger 1914[7] — a gill parasite of salmonids
  • Dermocystidium cochliopodii Valkanov 1967[7]
  • Dermocystidium cyprini Červinka & Lom 1974[7] — a gill parasite of carp[8]
  • Dermocystidium erschowii Garkavi, Denisov & Afanas'ev 1980— a skin parasite of carp
  • Dermocystidium fennicum Pekkarinen et al. 2003— a skin parasite of perch [9]
  • Dermocystidium gasterostei Elkan 1962[7] — a parasite of sticklebacks[10]
  • Dermocystidium granulosum Sterba & Naumann 1970[7]
  • Dermocystidium guyenotii Thélin 1955[7]
  • Dermocystidium koi Hoshina & Sahara 1950[7] — a skin parasite of carp
  • Dermocystidium kwangtungensis [11]
  • Dermocystidium macrophagi van de Moer, Manier & Bouix 1988
  • Dermocystidium nemachili [7]
  • Dermocystidium penneri (Jay & Pohley 1981) Borteiro et al. 2018
  • Dermocystidium percae Reichenbach-Klinke 1950[7] — a skin parasite of perch [9]
  • Dermocystidium pusulum (Pérez 1907) Pérez 1908[7]
  • Dermocystidium salmonis [7] — a gill parasite of salmon
  • Dermocystidium sinensis [11]
  • Dermocystidium sinipercae[12] — a parasite of Chinese perch
  • Dermocystidium vejdovskyi Jírovec 1939[7] — a parasite of pike


  1. ^ "Dermocystidium". Retrieved 2020-05-17.
  2. ^ Feist SW, Longshaw M, Hurrell RH, Mander B (April 2004). "Observations of Dermocystidium sp. infections in bullheads, Cottus gobio L., from a river in southern England". J. Fish Dis. 27 (4): 225–31. doi:10.1111/j.1365-2761.2004.00535.x. PMID 15049890.
  3. ^ Ragan MA, Goggin CL, Cawthorn RJ, et al. (October 1996). "A novel clade of protistan parasites near the animal-fungal divergence". Proc. Natl. Acad. Sci. U.S.A. 93 (21): 11907–12. Bibcode:1996PNAS...9311907R. doi:10.1073/pnas.93.21.11907. PMC 38157. PMID 8876236.
  4. ^ Sayre, R.M.; Gherna, R.L.; Wergin, W.P. (1983). "Morphological and Taxonomic Reevaluation of Pasteuria ramosa Metchnikoff 1888 and "Bacillus penetrans" Mankau 1975". International Journal of Systematic and Evolutionary Microbiology. 33 (3): 636–649. doi:10.1099/00207713-33-3-636.
  5. ^ Levine, Norman D. (1978). "Perkinsus gen. n. and Other New Taxa in the Protozoan Phylum Apicomplexa". The Journal of Parasitology. 64 (3): 549. doi:10.2307/3279807. JSTOR 3279807.
  6. ^ R. Pascolini; P. Daszak; A. A. Cunningham; et al. (August 2003). "Parasitism by Dermocystidium ranae in a population of Rana esculenta complex in Central Italy and description of Amphibiocystidium n. gen". Diseases of Aquatic Organisms. 56 (1): 65–74. doi:10.3354/dao056065. PMID 14524503.
  7. ^ a b c d e f g h i j k l Index Fungorum
  8. ^ S. Červinka; J. Vítovec; J. Lom; J. Hoška; F. Kubů (November 1974). "Dermocystidiosis–a gill disease of the carp due to Dermocystidium cyprini n.sp". J. Fish Biol. 6 (6): 689–699. doi:10.1111/j.1095-8649.1974.tb05112.x.
  9. ^ a b Marketta Pekkarinen; Jiří Lom; Colleen A. Murphy; Mark A. Ragan & Iva Dyková (2003). "Phylogenetic Position and Ultrastructure of Two Dermocystidium Species (Ichthyosporea) from the Common Perch (Perca fluviatilis)" (PDF). Acta Protozool. 42: 287–307.
  10. ^ E. Elkan (1962). "Dermocystidium Gasterostei n. sp., A Parasite of Gasterosteus Aculeatus L. and Gasterosteus Pungitius L.". Nature. 196 (4858): 958–960. Bibcode:1962Natur.196..958E. doi:10.1038/196958a0. S2CID 4217342.
  11. ^ a b Qizhong Zhang; Zhijian Wang (2005). "Dermocystidium sp. infection in cultured juvenile southern catfish Silurus meridionalis in China" (PDF). Diseases of Aquatic Organisms. 65 (3): 245–250. doi:10.3354/dao065245. PMID 16119893.
  12. ^ Zhang, Bo; Gu, Zemao (2022-05-31). "Isolation and identification of Dermocystidium sinipercae sp. n." Journal of Fisheries of China (in Chinese). 46 (5): 741–749. doi:10.11964/jfc.20210312707. ISSN 1000-0615.