| 词条 | Galactosomum |
| 释义 |
|regnum=Animalia |phylum=Platyhelminthes |classis=Trematoda |ordo=Plagiorchiida |familia=Heterophyidae |genus=Galactosomum |genus_authority=Looss, 1899 }} 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. DescriptionThe excised spherical metacercaria is 2.7–4.9 mm long.[2] Generally, only one is found per fish.[3] Life cycleSome 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
References1. ^{{cite book|last=Hoffman|first=Glenn L.|title=Parasites of North American Freshwater Fishes|publisher=Cornell University Press|location=512 East State St., Ithaca, NY 14850|year=1999|chapter=Some North American Fish Parasites Listed by Location in the Fish|isbn=0-8014-3409-2|url=https://books.google.com/books?id=ZU5iqP3NJpMC&pg=PA11&vq=Galactosomum&dq=Galactosomum+fish+parasite|page=11}} 2. ^{{cite journal|last=Kamegai|first=S. |author2=N. Yasunaga |author3=S. Ogawa |author4=S. Yasumoto|year=1982|title=Galactosomum sp. from intestine of Larus carassirostris from Nagasaki, Japan|journal=Jpn. J. Parasit.|pages=31|language=Japanese}} 3. ^1 {{cite journal|last=Kimura|first=M.|author2=Endo, M.|year=1979|title=Whirling disease caused by metacercaria of a fluke|journal=Fish Pathol.|volume=13|pages=211–213|language=Japanese|doi=10.3147/jsfp.13.211|issue=4}} 4. ^1 {{cite web|url=http://fishparasite.fs.a.u-tokyo.ac.jp/Galactosomum%20sp/Galactosomum-eng.html|title=Database of Parasites in Fish and Shellfish|accessdate=2008-07-03}} External links{{WoRMS|title=Galactosomum|id=108610}}{{taxobar|from=Q3377547}}{{Trematoda-stub}} 2 : Heterophyidae|Suicide-inducing parasitism |
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