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Title: Antibacterial Activity of Marine Sponge Extracts against Fish Pathogenic Bacteria 
Author: Annie Selva Sonia, G.; Lipton, A.P.; Paul Raj, R.
Date: 2008
Publisher: Israeli Journal of Aquaculture - BAMIGDEH
Citation: Annie S.S.G., Lipton, A.P., & Paul R.R. (2008). Antibacterial Activity of Marine Sponge Extracts against Fish Pathogenic Bacteria. The Israeli Journal of Aquaculture - Bamidgeh, 60(3), 172-176.
Abstract: Secondary metabolites of the marine sponges Acanthella elongata, Axinella donnani, Callyspongia diffusa, Callyspongia subarmigera, and Echinodictyum gorgonoides were collect- ed from fishing nets and their in vitro antibacterial properties against eight virulent marine fish pathogens were studied at incubation temperatures of 20°C and 30°C. Crude methanol extracts of the tested sponges showed species-specific antibacterial activity. The most active species was A. elongata which inhibited 100% and 87.5% of the tested bacterial isolates at 20°C and 30°C, respectively. Callyspongia subarmigera was the least active as it inhibited only 62.5% and 50% of the tested bacteria at those temperatures. Results suggest that fractionation and purifi- cation of the crude methanol extract of A. elongata has potential in the development of novel antibiotic substances for managing common bacterial diseases in aquaculture.
Series/Report No.: The Israeli Journal of Aquaculture - Bamidgeh
Pages/Duration: 5 pages
ISSN: 0792-156X
Keywords: antibacterial activity, sponges, fish pathogens
LC Subject Headings: Fish culture--Israel--Periodicals.
Fish culture--Periodicals.

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