Please use this identifier to cite or link to this item: https://doi.org/10.1111/j.1365-2761.2011.01319.x
Title: The pathology of 'scale drop syndrome' in Asian seabass, Lates calcarifer Bloch, a first description
Authors: Gibson-Kueh, S.
Chee, D.
Chen, J.
Wang, Y.H.
Tay, S.
Leong, L.N.
Ng, M.L. 
Jones, J.B.
Nicholls, P.K.
Ferguson, H.W.
Keywords: Lates calcarifer
Necrosis
Scale loss
Vasculitis
Virus
Issue Date: Jan-2012
Citation: Gibson-Kueh, S., Chee, D., Chen, J., Wang, Y.H., Tay, S., Leong, L.N., Ng, M.L., Jones, J.B., Nicholls, P.K., Ferguson, H.W. (2012-01). The pathology of 'scale drop syndrome' in Asian seabass, Lates calcarifer Bloch, a first description. Journal of Fish Diseases 35 (1) : 19-27. ScholarBank@NUS Repository. https://doi.org/10.1111/j.1365-2761.2011.01319.x
Abstract: 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. © 2011 Blackwell Publishing Ltd.
Source Title: Journal of Fish Diseases
URI: http://scholarbank.nus.edu.sg/handle/10635/125518
ISSN: 01407775
DOI: 10.1111/j.1365-2761.2011.01319.x
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

29
checked on Sep 29, 2022

WEB OF SCIENCETM
Citations

30
checked on Sep 29, 2022

Page view(s)

125
checked on Sep 22, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.