| The pathology of 'scale drop syndrome' in Asian seabass, Lates calcarifer Bloch, a first description. | |
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MedLine Citation:
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PMID: 22103767 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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This is the first pathological description of 'scale drop syndrome' (SDS) in Asian seabass, Lates calcarifer Bloch. Cumulative mortality was estimated at 40-50%. The vasculitis in all major organs including the skin and associated tissue necrosis was distinctive. The dermis overlying scale beds was often necrotic and associated with scale loss. Necrosis of splenic ellipsoids, renal glomeruli and choroid rete glands of eye were further hallmarks of a disease with systemic vascular involvement. The brain was not spared vascular damage, and the resulting multifocal encephalomalacia probably accounts for the spiral swimming behaviour in some affected fish. Other lesions included accentuated hepatic lobulation and gastric gland necrosis. Nuclear chromatin margination and karyolysis in hepatocytes, renal tubular epithelium and gastric and intestinal epithelium suggest specific targeting of cells. Basophilic cytoplasmic inclusions were present in spleen, kidney, liver, heart and choroid rete, but they were not prominent. Using transmission electron microscopy, two morphological forms of virions were observed: single- and double-enveloped hexagonal virions. Based on size and morphology, these virions resemble iridovirus or herpesvirus. The cause of SDS is unknown, but the pathological changes, especially the vasculitis, suggest an infectious aetiology, possibly viral. |
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Authors:
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S Gibson-Kueh; D Chee; J Chen; Y H Wang; S Tay; L N Leong; M L Ng; J B Jones; P K Nicholls; H W Ferguson |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-21 |
Journal Detail:
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Title: Journal of fish diseases Volume: - ISSN: 1365-2761 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9881188 Medline TA: J Fish Dis Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2011 Blackwell Publishing Ltd. |
Affiliation:
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School of Veterinary and Biomedical Sciences, Murdoch University, Western Australia, Australia Animal & Plant Health Laboratories, AgriFood & Veterinary Authority of Singapore, Singapore Electron Microscopy Unit, Faculty of Medicine, National University of Singapore, Singapore Department of Microbiology, Faculty of Medicine, National University of Singapore, Singapore Fish Health Laboratory, Department of Fisheries, Western Australia, Australia Marine Medicine Program, School of Veterinary Medicine, St George's University, Grenada, West Indies. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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