Journal of Tropical Oceanography >
Water quality and survival rate for intensive culture of white leg shrimp, Litopenaeus vannamei, under different cultural density in tropic area of China
Received date: 2009-11-25
Revised date: 2010-04-21
Online published: 2011-09-08
This paper reports characters of nine water quality parameters, such as pH, dissolved oxygen (DO), total alkali (TA),
chemical oxygen demand (COD), biological oxygen demand (BOD), hydrogen sulfide (H2S), nitrogen of nitrite (NO2-NT),
nitrogen of ammonia (NH4-NT), and concentration of live Vibrio (CLV), under different cultural density of Litopenaeus van-
namei in a typical outdoor intensive shrimp farm located in Hainan province, a tropic area of China. The relationship between
each parameter of water quality and the number of dead shrimp was explored. Statistical analysis suggested that the signifi-
cantly related water parameters to shrimp mortality are DO, NH4-NT, NO2-NT, H2S, and CLV. There are typical linear regres-
sion relationships between these parameters of water quality and shrimp mortality. The other four water parameters, including
pH value, total alkali, COD, and BOD, do not significantly affect shrimp mortality. The survival rates are 80.44%, 75.16%, 51.74%,
and 44.43% under four cultural densities of 70, 100, 120, and 150 PL·m−2
, respectively. The appropriate cultural density of Litopenaeus vannamei for the outdoor intensive system in a tropic area is suggest to be 70-100 PL·m−2
.
ZHANG Lü-ping,HU Chao-qun,SHEN Qi,REN Chun-hua . Water quality and survival rate for intensive culture of white leg shrimp, Litopenaeus vannamei, under different cultural density in tropic area of China[J]. Journal of Tropical Oceanography, 2011 , 30(4) : 85 -91 . DOI: 10.11978/j.issn.1009-5470.2011.04.085
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