AEI 8:567-574 (2016)  -  DOI: https://doi.org/10.3354/aei00198

Effects of water spinach Ipomoea aquatica cultivation on water quality and performance of Chinese soft-shelled turtle Pelodiscus sinensis pond culture

Wei Li1,2, Huaiyu Ding3, Fengyin Zhang4, Tanglin Zhang1, Jiashou Liu1, Zhongjie Li1,*

1State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
2School of Aquatic and Fishery Sciences, University of Washington, Box 355020, Seattle, Washington 98195-5020, USA
3Jiangsu Engineering Laboratory for Breeding of Special Aquatic Organisms, Huaiyin Normal University, Huaian 223300, China
4College of Life Sciences, Jianghan University, Wuhan 430056, China
*Corresponding author:

ABSTRACT: The Chinese soft-shelled turtle Pelodiscus sinensis is a highly valued freshwater species cultured in China. A 122 d experiment was conducted to assess the effects of water spinach Ipomoea aquatica cultivation in floating beds on water quality, and growth performance and economic return of P. sinensis cultured in ponds. Two treatments, each in triplicate, with and without I. aquatica cultivation were designed. Results showed that the levels of total ammonia nitrogen (TAN), total nitrogen (TN), total phosphorus (TP), chlorophyll a (chl a) and turbidity in treatments with I. aquatica cultivation (IAC) were significantly (p < 0.05) lower than those in treatments without I. aquatica (control). Mean TN and TP concentrations in the IAC treatment were 27.9 and 42.5%, respectively, lower than in the control treatment at the end of the experiment. The presence of I. aquatica also has a positive effect on the performance of P. sinensis. Although no significant difference was found in specific growth rate (SGR) between the 2 treatments, mean survival rates, production and net income were significantly higher in the IAC treatment compared to the control (p < 0.05). These results suggest that I. aquatica cultivation in the pond system of turtles has a synergistic effect on overall economic return and is effective at improving turtle growth performance and water quality.


KEY WORDS: Pelodiscus sinensis · Ipomoea aquatica · Aquaculture effluent · Growth performance ·∙ Economic return


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Cite this article as: Li W, Ding H, Zhang F, Zhang T, Liu J, Li Z (2016) Effects of water spinach Ipomoea aquatica cultivation on water quality and performance of Chinese soft-shelled turtle Pelodiscus sinensis pond culture. Aquacult Environ Interact 8:567-574. https://doi.org/10.3354/aei00198

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