Effects of Rice-Fish Co-culture on Oxygen Consumption in Intensive Aquaculture Pond

文献类型： 外文期刊

第一作者： Li Fengbo

作者： Li Fengbo;Zhou Xiyue;Xu Chunchun;Fang Fuping;Feng Jinfei;Sun Zhiping;Wu Dianxin;Zhang Ning;Li Fengbo;Qi Hangying

作者机构：

关键词： rice-fish co-culture; oxygen depletion; respiration; pond aquaculture; yellow catfish; freshwater shrimp

期刊名称：RICE SCIENCE （ 影响因子：3.333； 五年影响因子：4.226 ）

ISSN： 1672-6308

年卷期： 2019 年 26 卷 1 期

页码：

收录情况： SCI

摘要： Rice-fish co-culture has gained increasing attention to remediate the negative environmental impacts induced by intensive aquaculture. However, the effect of rice-fish co-culture on oxygen depletion has rarely been investigated. We constructed a rice-fish co-culture system in yellow catfish (Pelteobagrus fulvidraco) and freshwater shrimp (Macrobrachium nipponense) ponds using a new high-stalk rice variety, and conducted a field experiment to investigate the effect of rice-fish co-culture on water parameters and oxygen consumption. The results showed that rice-fish co-culture reduced the nutrients (total nitrogen, ammonia-N, total phosphorous and potassium) and the dissolved oxygen content in fish and shrimp ponds. However, they showed similar seasonal change of dissolved oxygen in the water of fish and shrimp ponds. Rice-fish co-culture reduced the total amount of oxygen consumption and optimized the oxygen consumption structure in pond. The respiration rates in water and sediment were significantly reduced by 66.1% and 31.7% in the catfish pond, and 64.4% and 38.7% in the shrimp pond, respectively, by additional rice cultivation. Rice-fish co-culture decreased the proportions of respiration in sediment and water, and increased the proportion of fish respiration. These results suggest that rice-fish co-culture is an efficient way to reduce hypoxia in intensive culture pond.

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