![]() |
Journal of Environmental BiologypISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP |
Google Search the Journal web-site: |
Abstract - Issue Jul 2010, 31 (4) BackEffect of neem extract against the bacteria isolated from marine fish N.B. Dhayanithi*, Centre of
Advanced Study in Marine Biology, (Received: Abstract: Marine ornamental fishes are
exceedingly valuable due to their high demand in domestic and international
markets. There is a growing global interest to rear the fishes in captivity.
But problem due to bacteria and fungi are the major hitch in captive condition.
Since, the use of antibiotics is banned, an attempt
was made to ascertain in vitro assay of the neem
leaves extract against the bacterial pathogens isolated from infected fishes.
Bacterial strains isolated from infected regions of the clown fishes Amphiprion sebae and A. ocellaris were identified as Aeromonas
hydrophila, Enterobacter
sp., E. coli, Pseudomonas aeruginosa, Proteus sp., Streptococcus sp., Vibrio cholerae, V. alginolyticus, V. parahaemolyticus and Yersinia enterocolitica. Ethanol and methanol extracts were highly
inhibitory to the bacterial isolates when compared to other solvents. Ethanol
extracts exhibited low minimum inhibitory concentration (75 - 250 ?g ml-1)
as compared to other extracts. The present finding revealed that the neem leaf extract significantly reduces the bacterial
pathogens and their infection in marine ornamental fishes.? Key
words: Bacteria, Crude
extract, Marine ornamental fishes, Minimum inhibitory concentration, Zone of
inhibition ???????? PDF of full length paper
is available online Copyright ? 2010 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any
form without prior permission. Responsibility regarding the authenticity
of the data, and the acceptability of the conclusions enforced or derived, rest
completely with the author(s). |