International Journal of Fisheries and Aquatic Studies
2015, Vol. 2, Issue 3, Part A
Assessment of water quality of giant freshwater prawn (Macrobrachium rosenbergii) in culture ponds in Zhejiang of ChinaAuthor(s):
Nguyen Thanh Hai, Yang Lili, Liu Qigen, Zhao liangjie, Liu Jun, Zhang HongAbstract:
Zhejiang province was chosen for assessment on water quality in Giant freshwater prawn (GFP), with 19 ponds in five farms used the different seed sources for culture and different geographical positions which represents for GFP culture status in Zhejiang. In the present study, some physical and bio-chemical parameters such as pH, temperature (ToC), dissolved oxygen (DO), transparency (SD), total phosphorus, total nitrogen, nitrate, nitrite, ammonia-nitrogen, COD and chlorophyll-a contents of 19 ponds have been analyzed for assessment of real situation with respect to ponds water taken as control. Study was undertaken for a period of three months from 2013 July 5 to 2013 September 25 during which the physical and bio-chemical parameters were compared with the water quality optimum for GFP growth from previous researches. ToC values of the GFP aquaculture ponds range between 26.13-34.2 oC as against the value of standard water quality 28-32 oC. Total phosphorus, total nitrogen, nitrate, nitrite, ammonia-nitrogen, SD, COD and chlorophyll-a contents showed variation within different farms. DO values varied from 1.21 to 8.36 mg/l during three months of investigation, most farms have DO value higher than 3.0 mg/l. The Trophic Level Index (TLI) indicated there occurred different eutrophic level from light to severe among 5 farms. Four water parameters such as DO, SD, pH and chlorophyll-a showed high significant differences between each pair farm with P<0.01; the Total phosphorus illustrated significant difference between each pair farm with P<0.05. Generally, the water of GFP culture ponds were occurred on eutrophic status, thus our need intensifies managing and monitoring of water quality in order to lead the GFP culture industry will be sustainable developmentPages: 45-55 | 917 Views 19 DownloadsDownload Full Article:
How to cite this article:
Nguyen Thanh Hai, Yang Lili, Liu Qigen, Zhao liangjie, Liu Jun, Zhang Hong. Assessment of water quality of giant freshwater prawn (Macrobrachium rosenbergii) in culture ponds in Zhejiang of China. Int J Fish Aquat Stud 2015;2(3):45-55.