The Effect of Potassium Concentration in Inland Saline Water on the Growth and Survival of the Western King Shrimp,Penaeus latisulcatusKishinouye, 1896

Abstract

The survival, growth, and condition of the western king shrimp, Penaeus latisulcatus, were measured for 42 days when grown in marine water and inland saline water with four different concentrations of potassium: 100%, 80%, 60% or 40% of the concentration of potassium in marine water (IS100, IS80, IS60, and IS40). Shrimp survival and cannibalism frequency decreased with decreasing potassium concentration, with final shrimp survival in IS100 significantly higher (P < 0.05) than in IS60 and IS40 and significantly higher (P < 0.05) in MW and IS80 than in IS40. Specific growth rate (SGR), moult increment, and diet ingestion rate of shrimp were significantly higher (P < 0.05) in shrimp grown in marine water than the other water types. At the conclusion of the trial, exoskeleton mineral content of shrimp in IS100 and IS80 was significantly higher (P < 0.05) than in IS60 and IS40. Tail muscle moisture content of shrimp in IS60 and IS40 was significantly higher (P < 0.05) than in the other water types, suggesting a depletion of tail muscle energy reserves in IS60 and IS40. This trial demonstrates the necessity of fortifying potassium-deficient inland saline water to allow the culture of western king shrimp. Furthermore, a potassium concentration greater than approximately 76% of that in marine water and a Na/K ratio of less then 39 appear to be necessary to maintain a comparable level of shrimp

Inland Saline Aquaculture-A Hope for Farmers

“…The necessity of fortifying potassium-deficient inland saline water to allow penaeid shrimp culture has been demonstrated by several authors (Saoud et. al., 2003;Prangnell and Fotedar, 2005;Rahman, et. al., 2005).…”

Recent Developments

“…2005 ;Jain et al . 2006 ) and Australia Partridge & Furey 2002 ;Prangnell & Fotedar 2005, 2006aPartridge et al . 2006Tantulo & Fotedar 2006, 2007.…”

“…An approach to improve the survival rate of the cultured prawns is by fortifying K + in ISW through the supplementation of KCl (Rahman et al . 2005 ;Prangnell & Fotedar 2005, 2006aTantulo & Fotedar 2006 ; and also by adding 5% KCl in fi sh diets (Gong et al . 2004 ).…”

“…The low K + concentration in ISW can be increased either by supplementing ISW with KCl (Prangnell & Fotedar 2005, 2006aTantulo & Fotedar 2006, 2007 or spreading muriate of potash on the bottom of the earthen ponds (Collins et al . 2005 ;Partridge & Creeper 2004 ).…”

Fortification of an Aquafeed with Potassium Chloride Does Not Improve Survival of Juvenile Australian Snapper Pagrus auratus Reared in Potassium Deficient Saline Groundwater

“…Potassium deficient groundwater is suitable for culture of penaeids if the water or the feed is fortified with K + [26,[44][45][46][47][48][49]. However, the benefit of feeding K + to shrimp also appears equivocal as some authors have shown that shrimp Litopenaeus vannamei reared in artificial seawater, where the [K + ] of water and feeds were varied, did not gain any substantial benefit from K + fortified feed [8].…”