Zhang Ruijie, Zhang Ruiling, Yu Kefu, Wang Yinghui, Huang Xueyong, Pei Jiying, Wei Chaoshuai, Pan Ziliang, Qin Zhenjun, Zhang Gan
Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China; Coral Reef Research Center of China, Guangxi University, Nanning 530004, China; School of Marine Sciences, Guangxi University, Nanning 530004, China.
Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China; Coral Reef Research Center of China, Guangxi University, Nanning 530004, China; School of Marine Sciences, Guangxi University, Nanning 530004, China; School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
Environ Pollut. 2018 Jan;232:450-457. doi: 10.1016/j.envpol.2017.09.064. Epub 2017 Oct 8.
Laboratory research has indicated that antibiotics had negative effects on coral growth by disturbing natural microbiota; however, no field studies have reported antibiotic contamination levels and their influence on coral growth in natural coral reef regions (CRRs). This study investigated antibiotic occurrence and sources in the surface water from CRRs that have suffered from rapid coral degradation and evaluated their risk to coral growth. These regions are in the South China Sea, including four coastal and two offshore CRRs. The results show that 13 antibiotics were detected in the coastal CRRs with concentrations ranging from 10-10 ng L, while 5 antibiotics occurred in offshore CRRs (300-950 km from the mainland), with concentrations ranging from 10 to 10 ng L. Their concentrations decreased gradually from the coast to offshore in the transport process. However, Yongxing Island, which is approximately 300 km from the mainland, was an exception with relatively higher concentrations than the surrounding reefs because of the ever-increasing human activity on the island. The presence of anthropogenic contaminants antibiotics in CRRs may be a potential risk to coral growth.
实验室研究表明，抗生素会干扰天然微生物群，对珊瑚生长产生负面影响；然而，尚无实地研究报告天然珊瑚礁区域（CRRs）的抗生素污染水平及其对珊瑚生长的影响。本研究调查了遭受珊瑚快速退化的CRRs地表水抗生素的存在情况和来源，并评估了其对珊瑚生长的风险。这些区域位于中国南海，包括四个沿海CRRs和两个近海CRRs。结果表明，在沿海CRRs中检测到13种抗生素，浓度范围为10-10纳克/升，而在近海CRRs（距离大陆300-950公里）中检测到5种抗生素，浓度范围为10至10纳克/升。在运输过程中，其浓度从海岸到近海逐渐降低。然而，距离大陆约300公里的永兴岛是个例外，由于岛上人类活动不断增加，其浓度高于周围珊瑚礁。CRRs中人为污染物抗生素的存在可能对珊瑚生长构成潜在风险。
