Effects of Ionic Concentrations on Survival and Growth in Polyculture of Litopenaeus vannamei with Oreochromis niloticus in Low Salinity Water

作     者：K. Limhang C. Limsuwan N. Chuchird W. Taparhudee 

作者机构：Aquatic Animal Production Technology Program Faculty of Animal Sciences and Agricultural Technology Silpakorn University Phetehaburi IT campus Sampraya Cha-am Phetchaburi 76120 Thailand Aquaculture Business Research Center Faculty of Fisheries Kasetsart University Bangkok 10900 Thailand 

出 版 物：《Journal of Agricultural Science and Technology(A)》 (农业科学与技术（A）)

年 卷 期：2011年第1卷第8期

页      面：1217-1220页

学科分类：090801[农学-水产养殖] 0908[农学-水产] 09[农学] 

主　　题：Litopenaeus vannamei Oreochromis niloticus polyculture ionic concentration low salinity water 

摘      要：A study comparative of rearing of the Pacific white shrimp （Litopenaeus vannamei） with the Nile tilapia （Oreochromis niloticus） in three earthen ponds （5,600 m^2） with the salinity ranged from 0.5-1.2 ppt and three treatment ponds with salinity of 2-4 ppt by adding brine water into the ponds. Postlarvae 12 （PL12） of L. vannamei were stocked at density of 9 PL/m^2 and after one week the Nile tilapia fingerlings were stocked at density of I fish/m^2. Only pelleted feed were given to the fish during the 196-day rearing period. Shrimps were partially harvested by sieve net at day 80 and 120, and five days later PLI2 were stocked at the rate of 3 PL/m^2. After final harvesting at day 196, the production, body weight and survival from the treatment group were significantly higher （P 〈 0.05） than those of the control group. While the fish production body weight and survival rate from both groups were not significant differences （P 〉 0.051）. The ionic concentration of six major ions （CI, SO42, Ca^2＋, Na^＋, Mg^2＋ and K^＋）, salinity and hardness in the treatment ponds were significantly higher than those of the control ponds （P 〈 0.05）. Moreover, the ionic profiles of the treatment ponds were similar to seawater at the salinity of 2 ppt while only 1 ppt in the control ponds. Results from the study indicated that in order to achieve good growth and survival rate of L. vannamei, brine water should be added into grow-out ponds prior to stocking and during the rearing： period to obtain and maintain the salinity not less than 2 ppt.