Galactosomum

Galactosomum is a genus of flukes in the family Heterophyidae. There are currently 28 recognised species within the genus. They mainly infect aquatic birds, but often infest fish as larvae.[1] Three species are known to use marine mammals as hosts.

Galactosomum
Scientific classification
Kingdom:
Animalia
Phylum:
Platyhelminthes
Class:
Trematoda
Order:
Plagiorchiida
Family:
Heterophyidae
Genus:
Galactosomum

Looss, 1899

Description

The excised spherical metacercaria is 2.7–4.9 mm long.[2] Generally, only one is found per fish.[3]

Life cycle

Some species of Galactosomum cause infected fish to swim closer to the surface and colorfully flash their underbellies.[4] In fish, symptoms can be similar to those of whirling disease caused by the unrelated parasite Myxobolus cerebralis.[3] Gastropods hosting select species suffer from sensory impairment due to infestation. This makes these prey animals more likely to be consumed by aquatic birds, providing a host for the parasite to reach the mature stage of its life cycle. Galactosomum cannot survive in human hosts.[4]

Species
  • Galactosomum baylisi (Gohar, 1930)
  • Galactosomum bearupi Pearson, 1973
  • Galactosomum cochlear (Diesing, 1850) Travassos, 1929
  • Galactosomum cochleariforme (Rudolphi, 1819) Pratt, 1911
  • Galactosomum darbyi Price, 1934
  • Galactosomum dollfusi Pearson, 1973
  • Galactosomum echinatum (Timon-David, 1955)
  • Galactosomum erinaceum (Poirier, 1886)
  • Galactosomum fregatae (Prudhoe, 1949)
  • Galactosomum humbargari Park, 1936
  • Galactosomum johnsoni (Price, 1934)
  • Galactosomum lacteum (Jägerskiöld, 1896)
  • Galactosomum linguiforme Anantaraman, 1974
  • Galactosomum nicolai (Isaichikov, 1927)
  • Galactosomum palawanense Fischthal & Kuntz, 1972
  • Galactosomum phalacrocoracis Yamaguti, 1939
  • Galactosomum puffini Yamaguti, 1941
  • Galactosomum renincola Pearson, 1973
  • Galactosomum sanaense Kobayashi, 1942
  • Galactosomum semifuscum (Olsson, 1876)
  • Galactosomum sinuilactis Pearson, 1973
  • Galactosomum spinetum (Braun, 1901)
  • Galactosomum stelleri Dailey, Demaree & Critchfield, 2002
  • Galactosomum timondavidi Pearson & Prévot, 1971
  • Galactosomum ubelakeri (Dailey, 1969) Pearson, 1977
  • Galactosomum ussuriense Oshmarin, 1963
  • Galactosomum witenbergi Anantaraman, 1974
  • Galactosomum yehi (Dissanaike, 1961) Pearson, 1973
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References
  1. Hoffman, Glenn L. (1999). "Some North American Fish Parasites Listed by Location in the Fish". Parasites of North American Freshwater Fishes. 512 East State St., Ithaca, NY 14850: Cornell University Press. p. 11. ISBN 0-8014-3409-2.CS1 maint: location (link)
  2. Kamegai, S.; N. Yasunaga; S. Ogawa; S. Yasumoto (1982). "Galactosomum sp. from intestine of Larus carassirostris from Nagasaki, Japan". Jpn. J. Parasit. (in Japanese): 31.
  3. Kimura, M.; Endo, M. (1979). "Whirling disease caused by metacercaria of a fluke". Fish Pathol. (in Japanese). 13 (4): 211–213. doi:10.3147/jsfp.13.211.
  4. "Database of Parasites in Fish and Shellfish". Retrieved 2008-07-03.

"Galactosomum". WoRMS. World Register of Marine Species.

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