摘要

       尽管水产养殖环境中抗药性基因（ARGs）的研究越来越受到科学界的关注，但要了解其在整个养虾过程中的丰度和去除机理还需要进一步的研究。因此，本研究调查了华南地区集约化对虾养殖场不同环境分区中ARGs的丰度、分布和去除率。结果表明，sul1和cmlA是水体和沉积物中主要的ARG。此外，虾池水中ARGs的总丰度高于水源水和养殖废水。此外，沉积物样品的ARG丰度明显高于虾池水样（P<0.05）。环境因素对养殖环境中ARGs的分布有显著影响。此外，稳定的池塘有助于去除虾池水中的ARGs。这项研究解释了在整个养虾过程中，不同环境分区中ARGd丰度的时间变化以及ARGs的去除。然而，需要进一步的研究来优化水处理工艺以去除水产养殖中的ARGs。

       Although research regarding antibiotic resistance genes (ARGs) in aquaculture environments has gained increasing scientific interest, further studies are required to understand the abundances and removal mechanisms of ARGs during the entire rearing period of shrimp aquaculture. Thus, in this study, abundances, distributions and removal rates of ARGs in different environmental compartments of intensive shrimp farms in South China were investigated during the entire rearing period. The results indicated that sul1 and cmlA were the predominant ARGs in the water and sediment samples. Additionally, the total abundance of ARGs was higher in shrimp pond water than in the source water and farm effluent. Moreover, sediment samples indicated significantly higher ARG abundances than water samples from the shrimp ponds (P < 0.05). Environmental factors were found to significantly affect the distribution of ARGs in shrimp rearing environments. Furthermore, stable ponds aided the removal of ARGs from shrimp pond water. This study accounted for temporal variations in ARG abundances as well as removal of ARGs in different environmental compartments during the entire shrimp rearing period. However, additional research is required to optimize the water treatment process for removal of ARGs from the aquaculture.

        https://www.ncbi.nlm.nih.gov/pubmed/30755094