JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

About Journal
    Editorial Board
    Reviewer Panel
    RnD Division
    Subscription Info
    Contact Journal
Read Journal
    Current Issue
    Journal Archives
For Authors
    Authoring Guidelines
    Publication Process
    Track Paper Status

Search the Journal web-site through Google:

        Abstract - Issue Apr 2006, 27 (2)                                                                                                             Back


Pathogenic changes due to inoculation of gram-negative bacteria Pseudomonas aeruginosa (MTCC 1688) on host tissue proteins and enzymes of the

giant freshwater prawn, Macrobrachium rosenbergii (De Man)


K. Ramalingam and S. Ramarani

PG and Research Department of Zoology,

Government Arts College, Nandanam, Chennai – 600 035, India


(Received: 22 July, 2004 ; Accepted: 10 March, 2005)



Abstract: The freshwater giant prawn, Macrobrachium rosenbergii inoculated with Pseudomonas aeruginosa MTCC 1688 revealed pathogenic symptoms in certain tissue biochemical parameters. The tissue proteins showed proteolysis. The chitinase and phenol oxidase activity in tissues revealed marked inhibition. The culmination of these biochemical changes is attributed to the tissue pathological changes characteristic of bacterial inoculation. The chitinoclastic nature of the opportunistic bacterial pathogen inducing the above symptoms reveal that the disease outbreak in shrimps is the outcome of a pathogenic chain linkage involving environment (medium)–bacterial population (opportunistic/endemic)–shrimp population. The delinking of the above chain bywater quality maintenance, selection of shrimp species and by keeping the bacterial population below that of damage threshold would have far reaching implications in enhancing productivity in this under water agriculture.


Key words: Clinical signs, Chitinase, Pro-phenoloxidase, Macrobrachium rosenbergii, Pathological changes.




Copyright © 2006 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).