Systemic Scuticociliatosis (Philasterides dicentrarchi) in Sharks
| Autor: | M F Stidworthy, M M Garner, D S Bradway, E Guglielmi, Heike Schmidt-Posthaus, S Repetto, S M Thornton, B Joseph, B D Westfall |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Horn shark
Heterodontus japonicus Zoology Central Nervous System Protozoal Infections Ciliophora Infections Aquaculture Hepatitis Animal Polymerase Chain Reaction Necrotizing meningoencephalitis Disease Outbreaks Fish Diseases Species Specificity Necrotizing Vasculitis medicine Animals Pathogen Hepatitis General Veterinary biology Meningoencephalitis Anatomy biology.organism_classification medicine.disease Heterodontus portusjacksoni Oligohymenophorea Sharks Animals Zoo |
| Zdroj: | Veterinary Pathology. 51:628-632 |
| ISSN: | 1544-2217 0300-9858 |
| DOI: | 10.1177/0300985813492800 |
| Popis: | Scuticociliatosis is an economically important, frequently fatal disease of marine fish in aquaculture, caused by histophagous ciliated protozoa in the subclass Scuticociliatida of the phylum Ciliophora. A rapidly lethal systemic scuticociliate infection is described that affected aquarium-captive zebra sharks ( Stegostoma fasciatum), Port Jackson sharks ( Heterodontus portusjacksoni), and a Japanese horn shark ( Heterodontus japonicus). Animals died unexpectedly or after a brief period of lethargy or behavioral abnormality. Gross findings included necrohemorrhagic hepatitis and increased volumes of celomic fluid. Histologically, 1 or more of a triad of necrotizing hepatitis, necrotizing meningoencephalitis, and thrombosing branchitis were seen in all cases, with necrotizing vasculitis or intravascular fibrinocellular thrombi. Lesions contained variably abundant invading ciliated protozoa. Molecular identification by polymerase chain reaction from formalin-fixed tissues identified these as the scuticociliate Philasterides dicentrarchi (syn. Miamiensis avidus), a novel and potentially emergent pathogen in sharks. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|