Spatial and temporal variation of antibiotic resistance in marine fish cage-culture area of Guangdong, China

文献类型： 外文期刊

第一作者： Wu, Jinjun

作者： Wu, Jinjun;Su, Youlu;Deng, Yiqin;Guo, Zhixun;Cheng, Changhong;Ma, Hongling;Liu, Guangfeng;Xu, Liwen;Feng, Juan;Wu, Jinjun

作者机构：

关键词： Antibiotic resistance genes; Antibiotic-resistant bacteria; Spatial and temporal variation; Marine fish cage-culture areas

期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.071； 五年影响因子：8.35 ）

ISSN： 0269-7491

年卷期： 2019 年 246 卷

页码：

收录情况： SCI

摘要： The rapid emergence and dissemination of antibiotic resistance poses a threat to human health and to the marine environment. We have investigated the abundance and diversity of antibiotic resistance genes (ARGs) and of antibiotic-resistant bacteria (ARB), during the seedling period, rearing period, and harvesting period in seven marine fish cage-culture areas in Guangdong. Spatial and temporal variations of AGRs and ARB were also analyzed. Culture-based methods and quantitative PCR were used to detect ARB and ARGs. Bacterial resistance rates were no significantly different within farming periods. The proportion of antibiotic-resistant bacteria was extremely low (average on 1.15%), except for oxytetracycline-resistant bacteria (average on 34.15%). Vibrio was the most common ARB. Sul1, tetB, and ermB, had the highest relative abundance. The abundance of ARGs in the harvesting period was significant highest. The total abundance of ARGs was highest at Raoping and lowest at Dayawan and Liusha. Most ARGs were associated with opportunistic pathogens. The environmental factors effecting ARB and ARGs are complex, and no key factors were identified. This study provides a theoretical basis for assessing the harmfulness of ARGs and ARB to food safety and human health. (C) 2018 Elsevier Ltd. All rights reserved.

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