Effects of salinity on food intake, growth, and survival of pufferfish (Fugu obscurus) |
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| Authors: | M Yan Z Li B Xiong J Zhu |
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| Institution: | Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China;, Fisheries College, Huazhong Agricultural University, Wuhan, China |
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| Abstract: | The food intake, growth, food conversion ratio and survival of yearling pufferfish, Fugu obscurus Abe, were investigated under different water salinity conditions over a 54‐day period. Within the salinity regimes of 0 (freshwater), 8, 18, and 35‰, the food intake levels were 0.97%, 1.43%, 1.19% and 1.01%, respectively; food conversion ratios were 1.31, 1.93, 1.61 and 1.36, respectively; and specific growth rates were 0.41%, 1.15%, 0.84%, and 0.35%, respectively. The three data series were reduced with increasing salinity. However, the survival rates did not show the same tendencies, which were 80%, 100%, 100%, and 67%, respectively. There were significant differences among the treatments. In conclusion, the yearling pufferfish optimum culture salinity condition was about 8‰. |
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