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Sphaerothecum destruens

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Title: Sphaerothecum destruens  
Author: World Heritage Encyclopedia
Language: English
Subject: Dermocystida, Salmon, Mesomycetozoea,, Swim bladder disease
Publisher: World Heritage Encyclopedia

Sphaerothecum destruens

Sphaerothecum destruens
Scientific classification
Domain: Eukarya
(Unranked) Opisthokonta
(Unranked) Choanozoa or Holozoa
Class: Mesomycetozoea
Order: Dermocystida
Family: Rhinosporideaceae
Genus: Sphaerothecum
Species: S. destruens
Binomial name
Sphaerothecum destruens
Arkush et al., 2003

Sphaerothecum destruens (the rosette agent) is a parasite of fish.[1][2] It was first discovered in the United States in association with invasive species including topmouth gudgeon but was found to be the causative agent of a disease in the UK affecting salmonid species such as Atlantic salmon and brown trout. It is thought to pose more of a risk in Europe than in the USA as native species there are more susceptible to the parasite. The disease causes high rates of morbidity and mortality in a number of different salmonid species and can also infect other UK freshwater fish such as bream, carp and roach.[3] The genus Sphaerothecum is closely related to the genera Dermocystidium and Rhinosporidium.[2]


  1. ^ M. A. Ragan, C. L. Goggin, R. J. Cawthorn, L. Cerenius, A. V. Jamieson, S. M. Plourde, T. G. Rand, K. Söderhäll & R. R. Gutell (October 1996). "A novel clade of protistan parasites near the animal-fungal divergence".  
  2. ^ a b Kristen D. Arkush, Leonel Mendoza, Mark A. Adkison & Ronald P. Hedrick (2003). "Observations on the life stages of Sphaerothecum destruens n. g., n. sp., a mesomycetozoean fish pathogen formerly referred to as the rosette agent".  
  3. ^ "Deadly parasite could endanger salmon and trout populations in U.K.".  

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