Comparative Study of Water Quality in Extensive and Modified Extensive Penaeus monodon (Fabricius) Culture Systems in South West Coast of Kerala

S. Lekshmy; M. Mini; Nansi Mole; Tresa Radhakrishnan

Volume : IV, Issue : XII, December - 2014

Comparative Study of Water Quality in Extensive and Modified Extensive Penaeus monodon (Fabricius) Culture Systems in South West Coast of Kerala

S. Lekshmy, M. Mini, Nansi Mole, Tresa Radhakrishnan

Abstract :

<p>Water quality characteristics of extensive and modified extensive Penaeus monodon culture systems on< /> the southwest coast of Kerala, was studied. Extensive and modified extensive systems differed significantly, particularly in regard to such important water quality parameters as pH, salinity, DO, CO2, H2S, NH3, alkalinity< /> and hardness. Positive correlation between salinity and water temperature (P&lt; 0.01) was noted in the present study< /> in both systems. Salinity showed positive correlation with TSS (P&lt; 0.01) in both systems. An inverse relation between< /> DO and CO2 content was detected in both extensive and modified extensive systems (P&lt; 0.01). Positive correlation< /> between alkalinity and pH was observed in extensive and modified extensive systems (P&lt; 0.05, P&lt; 0.01, respectively).< /> In the present study in both systems, there was negative correlation between total hardness and pH (P&lt; 0.05). Results< /> of ANOVA compå various water quality variables between extensive and modified extensive systems and between< /> seasons yielded highly significant multivariate tests both for systems and seasons.</p>