TY - JOUR AU - Allen Davis, D. AU - P. Saoud, Imad. AU - J. McGraw, William AU - B. Rouse, David PY - 2019/11/08 Y2 - 2024/03/28 TI - Considerations for Litopenaeus vannamei Reared in Inland Low Salinity Waters JF - Avances en Nutrición Acuicola JA - ACU VL - 0 IS - 0 SE - Artículos DO - UR - https://nutricionacuicola.uanl.mx/index.php/acu/article/view/229 SP - AB - <p>Shrimp culture in inland low-salinity well water is a growing industry in many regions of<br />the world, including the southern United States of America. Although shrimp culture<br />techniques in waters of marine origin are well established, they are not necessarily<br />applicable to shrimp culture in low salinity well water. Inland well waters tend to vary<br />among each other in salinity and ion profiles. If shrimp culture using inland well water is<br />to develop further, we must systematically deal with production problems which include 1)<br />identification of suitable water sources 2) development of acclimation and stocking<br />procedures 3) identify specific nutritional requirements for low salinity environments. This<br />paper summarizes work that we have done to a) assist in the development of acclimation<br />procedures for Litopenaeus vannamei postlarvae (PL), b) evaluate a variety of well water<br />sources for their culture potential and identify mineral imbalances that may be correlated to<br />poor survival and growth c) provide baseline data for the identification of nutritional<br />manipulations that may mitigate the variable survival that has plagued low salinity<br />production systems. Results suggest that PL survival in native seawater is affected by an<br />interaction between PL age and water salinity. In native seawater, ten day old PL exhibited<br />greater survival at salinities greater than 4 ppt than at salinities of 2 ppt and lower. Fifteen<br />and twenty-day old PL survived in salinities as low as 1 ppt. Survival of PL in well water<br />varied among water sources, and was affected by the concentration of various ions such as<br />potassium (K+), magnesium (Mg2+), and sulphate (SO4<br />2-), as well as PL age. Based on<br />current data, the supplementation of potassium to well water sources “low” in potassium<br />will result in increased growth and survival. Based on our limited knowledge of the<br />interaction of salinity and nutritional requirements the supplementation of potassium,<br />magnesium and sodium chloride as well as selected amino acids and potentially lipids<br />could mediate some of the problems encountered when rearing marine shrimp in low<br />salinity production situations. Current data suggests that nutritional and/or environmental<br />manipulations are technically feasible and probably are the most economically viable<br />solutions to facilitate better production in many of the low salinity farms.</p> ER -