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Journal of Environmental Biology

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

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    Abstract - Issue May 2008, 29 (3)                                     Back


Effect of salinity on the predatory performance of Diplonychus rusticus (Fabricius)

G. Chandramohan, S. Arivoli* and P. Venkatesan

Aquatic Entomology and Biocontrol Research Laboratory, Department of Advanced Zoology and Biotechnology,

Loyola College, Chennai-600 034, India

(Received: August 12, 2005 ; Revised received: June 28, 2006 ; Re-revised received: July 12, 2006 ; Accepted: August 16, 2006)

Abstract: Predatory efficiency of Diplonychus rusticus (Fabricius) was recorded at different prey density with different salinity ranges.When the salinity level (ppt) was increased, the predation rate of the bug decreased. Fifth nymphal stage showed higher predation in the 2, 4 and 6 ppt levels of salinity in both 1hr and 24 hr period of exposure at prey densities 50, 100, 150 and 200.At prey density 150, adult bugs killed more prey in the 2 ppt level of salinity in both 1hr and 24 hrtreatments.

Key words:†† Salinity, Predatory performance, Diplonychus rusticus

 

PDF of full length paper is available with author (rmsarivoli@yahoo.com)

 

Copyright © 2008 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).