JEB logo

Journal of Environmental Biology

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

About Journal
    Home
    Obituary: Dr. R. C. Dalela
    Editorial Board
    Reviewer Panel
    Publication Policies
    Guidelines for Editors
    Guidelines for Reviewers
    Abstracting and Indexing
    Subscription and Payments
    Contact Journal
    About Triveni Enterprises
 
Read Journal
    Current Issue
    Journal Archives
 
For Authors
    Guidelines for Authors
    Terms and Conditions
    Fees and Payments
    Track Paper Status
 

Google Search the Journal web-site:


    Abstract - Issue May 2011, 32 (3)                                     Back


nstantaneous and historical temperature effects on a-pinene

Impact of mineral deposition on shrimp, Penaeus monodon

in a high alkaline water

 

Author Details

 

A. Gopalakrishnan

Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai - 608 502, India

M. Rajkumar

Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, P.R. China

Jun Sun

(Corresponding author)

Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, P.R. China

e-mail: phytoplankton@163.com

Gary G. Martin

Department of Biology, Occidental College, Los Angeles, California, USA 90041

A. Parida

M.S. Swaminathan Research Foundation, Third Cross Street, Institutional Area, Taramanai,

Chennai - 600 113, India

 

 

Publication Data

Paper received:

29 October 2009

 

Revised received:

23 March 2010

 

Accepted:

20 April 2010

 

Abstract

This study compares water quality parameters, shrimp growth and mortality rates, and biomass at harvest in two ponds of equal size, seeded with the same density (7 m-2) of White Spot Syndrome Virus (WSSV) and Monodon Baculo Virus (MBV) negative post-larvae (PL)-20 of shrimp, Penaeus monodon in the Vellar estuary of South India. The primary difference between the ponds was the water source; one was filled from the estuary and the second with water from bore wells with high alkalinity. Temperature in both ponds was similar and reached 32oC after 185 days of culture. Dissolved oxygen (DO) levels were within the acceptable range although levels in the alkaline pond were near the lower limit for the last 90 days before harvest. Salinity levels were similar in both ponds, above optimal levels, and increased over the 185 days. Alkalinity in the estuarine water was typically < 50 ppm and again 200-320 ppm in the alkaline pond. In the alkaline pond, beginning on the 75th day mineral deposits was observed covering all parts of the shrimp including the eye and the inner gill chambers, and by harvest, 42% of the shrimp showed this coating. Elemental analysis identified the major constituents as calcium, phosphorus and manganese. Survival rates in the estuarine-water-fed pond was 92% with a total pond biomass at harvest of 1.65 tons ha-1 compared to survival of 79% in the alkaline pond and a biomass at harvest of 1.020 tons ha-1. When well water must be used, its alkalinity should be monitored and diluted with water from other sources.

 

Key words

Shrimp culture, Penaeus monodon, Alkaline pond, Mineral deposit

 

Copyright © 2011 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).

Â