CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
Int J Environ Res Public Health. 2021 Nov 4;18(21):11569. doi: 10.3390/ijerph182111569.
The composition and stability of microbial communities in aquaculture water are crucial for the healthy growth of shrimp and present considerable risk to aquatic ecosystems. The modified clay (MC) method has been proposed as an efficient and safe solution for the mitigation of harmful algal blooms (HABs). Currently, the effects of MC on microbial communities in aquaculture water remain unknown. Here, we adopted the MC method to regulate shrimp-culture water quality and evaluated the effects of MC on the composition and stability of phytoplankton together with bacteria communities through high-throughput sequencing. On the one hand, a prominent change in the composition of microbial community was observed, with green algae becoming the most abundant genera and pathogens being infrequent in the MC-treated pond, which was more conducive to the growth of shrimp than that in the control pond. Moreover, MC could increase the diversity and stability of the microbial community structure in the water column, which had a higher anti-interference ability, as demonstrated by the analysis of the diversity and molecular ecological network. Taken together, MC could reduce the possibility for the occurrence of HABs and maintain a stable microbial community, which is beneficial for the health and high yield of shrimp.
水产养殖水中微生物群落的组成和稳定性对虾类的健康生长至关重要，同时也对水生态系统构成了重大风险。改性黏土（MC）方法已被提议作为减轻有害藻华（HABs）的有效且安全的解决方案。目前，MC 对水产养殖水中微生物群落的影响尚不清楚。本研究采用 MC 方法调控虾养殖水质，并通过高通量测序评估了 MC 对浮游植物和细菌群落组成和稳定性的影响。一方面，观察到微生物群落组成发生了显著变化，绿藻成为最丰富的属，而 MC 处理池塘中的病原体很少，这比对照池塘更有利于虾的生长。此外，MC 可以增加水柱中微生物群落结构的多样性和稳定性，具有更高的抗干扰能力，这可以通过多样性和分子生态网络分析来证明。总之，MC 可以降低 HABs 发生的可能性并维持稳定的微生物群落，这有利于虾的健康和高产。
