Application of Gracilaria lichenoides (Rhodophyta) for alleviating excess nutrients in aquaculture

文献类型： 外文期刊

第一作者： Xu, Yongjian

作者： Xu, Yongjian;Wei, Wei;Fang, Jianguang

作者机构：

关键词： shrimp culture;fish culture;nutrients;bioremediation

期刊名称：JOURNAL OF APPLIED PHYCOLOGY （ 影响因子：3.215； 五年影响因子：3.612 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： A study was conducted in Xiangshan Bay, Ningbo, China, using red alga Gracilaria lichenoides to alleviate nutrient pollution in shrimp (Litopenaeus vannamei) and fish (Epinephelus awoara) culture ponds. Our results showed that G. lichenoides was efficient at absorbing inorganic nitrogen (IN) and inorganic phosphate (IP), and maintained a more stable dissolved oxygen (DO) level. A total of 506.5 kg (1,013 kg hap#) of shrimp and 210.5 kg (421 kg hap#) of fish were harvested from the shrimp/algae (SA) and fish/algae (FA) ponds, respectively. Only 53.5 kg shrimp were harvested from the shrimp pond without Gracilaria (S) due to anoxic asphyxia, and 163 kg fish were harvested from the fish culture pond without Gracilaria (F). Compared with using microalgae, bioremediation by macroalgae has no risk of harmful algal blooms (HABs), and it is easy to control seaweed biomass. During the experiment, there was a better environmental condition (lower chemical oxygen demand, IN, IP and chlorophyll a concentrations) in the ponds with Gracilaria. Furthermore, Gracilaria spp. can be used as food for abalone or other aquacultured animals and thus enhance economic return.

分类号： Q949.2

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