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Gewählte Publikation:

Publikationstyp: Zeitschriftenaufsatz
Dokumenttyp: Kurzbericht/Note

Jahr: 2018

AutorInnen: Soliman, H; Kumar, G; El-Matbouli, M

Titel: Tetracapsuloides bryosalmonae persists in brown trout Salmo trutta for five years post exposure.

Quelle: Dis Aquat Organ. 2018; 127(2):151-156



Autor/innen der Vetmeduni Vienna:

El-Matbouli Mansour
Kumar Gokhlesh
Soliman Hatem

Beteiligte Vetmed-Organisationseinheiten
Universitätsklinik für Geflügel und Fische, Klinische Abteilung für Fischmedizin


Zugehörige(s) Projekt(e): Genexpression und -funktion von Tetracapsuloide bryosalmonae


Abstract:
Tetracapsuloides bryosalmonae is a malacosporean parasite and the causative agent of proliferative kidney disease (PKD) that seriously impacts farmed and wild salmonids. The parasite's life cycle includes an invertebrate host, the bryozoan Fredericella sultana, and a vertebrate host, salmonid fish. The persistence of T. bryosalmonae in brown trout Salmo trutta for up to 2 yr following exposure is well documented. Results from the present study confirmed that one brown trout that had recovered from PKD did not completely clear the parasite from its tissues and that T. bryosalmonae could persist in brown trout for up to 5 yr post exposure. Furthermore, recovered infected brown trout can release viable T. bryosalmonae spores that are able to infect specific pathogen-free F. sultana colonies. T. bryosalmonae DNA was detected by PCR in every organ, and parasite stages were observed in the kidney, spleen and liver following immunohistochemistry. This finding indicates that T. bryosalmonae-infected brown trout can act as asymptomatic carriers and release the parasite for several years after the initial infection, acting as a reservoir of infection, and contributing to the dissemination of the parasite to new areas.

Keywords Pubmed: Animals
Carrier State
Fish Diseasesparasitology
Kidneyparasitology
Kidney Diseasesparasitologyveterinary
Myxozoaphysiology
Parasitic Diseases, Animalparasitology
Troutparasitology

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