Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/23460
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Ulcerative dermatitis in wild dusky grouper Epinephelus marginatus (Lowe) from Libyan waters
Authors: Rizgalla, Giamila T
Bron, James
Shinn, Andrew
Herath, Tharangani
Paladini, Giuseppe
Ferguson, Hugh
Contact Email: j.e.bron@stir.ac.uk
Keywords: dusky grouper dermatitis DGD
haemorrhage
parasite eggs
pathology
scale pockets
skin lesions
Issue Date: Dec-2016
Publisher: Wiley-Blackwell
Citation: Rizgalla GT, Bron J, Shinn A, Herath T, Paladini G & Ferguson H (2016) Ulcerative dermatitis in wild dusky grouper Epinephelus marginatus (Lowe) from Libyan waters, Journal of Fish Diseases, 39 (12), pp. 1457-1466.
Abstract: In the period 2013–2015, wild dusky grouper,Epinephelus marginatus(Lowe), caught in Libyan coastal waters and ranging in size from 42 to 92cm in total length, were observed to have distinctive skin lesions of unknown aetiology. Histopathologically, the lesions comprised a multifocal, unilateral or bilateral dermatitis, involving the epidermis, superficial dermis and scale pockets, and sometimes, in severe cases, the hypodermis. Severe lesions had marked epidermal spongiosis progressing to ulceration. Healing was observed in some fish. Bacteria and fungi could be isolated from severe lesions, although they were not seen histopathologically in early-stage lesions. By contrast, metazoan parasite eggs were observed in the dermis and epidermis of some fish with mild and moderate dermatitis. Unidentified gravid digeneantrematode parasites carrying similar eggs were also seen within the blood vessels of the deep and superficial dermis. The cause of this distinctive condition, termed dusky grouper dermatitis (DGD), and its potential impact upon already threatened Mediterranean wild dusky grouper populations and upon cultured grouper more widely have yet to be established.
Type: Journal Article
URI: http://hdl.handle.net/1893/23460
DOI Link: http://dx.doi.org/10.1111/jfd.12485
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: University of Stirling
Aquaculture
Aquaculture
Aquaculture
Aquaculture
Aquaculture

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