• Source: 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. Three species are known to use marine mammals as hosts.


    Description


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


    Life cycle


    Some species of Galactosomum cause infected fish to swim closer to the surface and colorfully flash their underbellies. In fish, symptoms can be similar to those of whirling disease caused by the unrelated parasite Myxobolus cerebralis. 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.


    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


    References




    External links


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

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