Record Details

Water quality and bacteriology in an aquaculture facility equipped with a new aeration system

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Water quality and bacteriology in an aquaculture facility equipped with a new aeration system
 
Creator Fernandes, S.O.
Kulkarni, S.S.
Shirodkar, R.R.
Karekar, S.V.
PraveenKumar, R.
Sreepada, R.A.
Vogelsang, C.
LokaBharathi, P.A.
 
Subject Shrimp
Inorganic nitrogen
aeration system
Penaeus monodon
 
Description The HOBAS aeration system was tested to compare changes in environmental and bacteriological parameters in ponds growing Penaeus monodon during a single production cycle. The stocking density in the aerated pond was doubled to 12 post-larvae (PL) m sup(-2) in contrast to the non-aerated pond with 6 (PL) m sup(-2). Microbial abundance in the ponds ranged between 10 sup(5-6) cells ml sup(-1). Among the physiological groups of bacteria enumerated, the heterotrophs dominated with an abundance of 10 sup(4) CFU ml sup(-1). Of the nitrogen and sulfur cycle bacteria, the nitrifiers flourished in the aerated pond and could maintain ammonia-N concentration within permissible levels. Bacterial activity also maintained sulfide concentrations at < 0.03 mg l sup(-1). Non-aerated conditions promoted denitrification maintaining nitrate concentration between 0.32 and 0.98 Mu M NO sub(3) sup(-) - N l sup(-1). However, a marked increase in ammonium content was observed in the non-aerated pond at the end of the culture period. Thus in high-density ponds, the aerators served to stimulate bacterial growth and activity which consequently maintained the quality of the water to match that of low-density ponds. Accordingly, these aerators could be effectively used to sustain higher yields. The effluent from the aerated pond is less likely to alter the redox balance of the receiving waters
 
Date 2010-04-22T06:55:21Z
2010-04-22T06:55:21Z
2010
 
Type Journal Article
 
Identifier Environmental Monitoring and Assessment, vol.164(4); 81-92
http://drs.nio.org/drs/handle/2264/3588
 
Language en
 
Rights Copyright [2009] Springer.
 
Publisher Springer