Kingsbury M V, Hamoutene D, Kraska P, Lacoursière-Roussel A, Page F, Coyle T, Sutherland T, Gibb O, Mckindsey C W, Hartog F, Neil S, Chernoff K, Wong D, Law B A, Brager L, Baillie S M, Black M, Bungay T, Gaspard D, Hua K, Parsons G J
St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada.
St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada.
Mar Pollut Bull. 2023 Mar;188:114654. doi: 10.1016/j.marpolbul.2023.114654. Epub 2023 Feb 1.
The presence of in-feed anti-sea lice drugs and their relationship with organic enrichment is poorly understood in sediment surrounding salmon farms. Using data from an aquaculture monitoring program (2018-2020), we describe this relationship at ten sites in four Canadian provinces. Three anti-sea lice pesticides (lufenuron, teflubenzuron, emamectin benzoate and metabolite desmethyl emamectin benzoate), and one antibiotic (oxytetracycline) were detected. Concentrations were often below limits of quantification. Values are also lower than those reported in other aquaculture salmon-producing countries. Highest concentrations, along with organic enrichment, were observed ~200 m of cages with lower concentrations detected up to 1.5 km away. Most samples had at least two drugs present: 75.2 % (British Columbia), 91.4 % (Newfoundland), and 54.8 % (New Brunswick/Nova Scotia) highlighting the potential for cumulative effects. Emamectin benzoate and oxytetracycline were detected four and three years respectively after last known treatments, demonstrating the need for research on overall persistence of compounds.
在鲑鱼养殖场周围的沉积物中，人们对饲料中抗海虱药物的存在及其与有机富集的关系了解甚少。利用一个水产养殖监测项目（2018 - 2020年）的数据，我们描述了加拿大四个省份十个地点的这种关系。检测到三种抗海虱杀虫剂（虱螨脲、氟苯脲、阿维菌素苯甲酸盐及其代谢物去甲基阿维菌素苯甲酸盐）和一种抗生素（土霉素）。浓度通常低于定量限。这些值也低于其他水产养殖鲑鱼生产国报告的值。在距离网箱约200米处观察到最高浓度以及有机富集，在1.5公里外检测到较低浓度。大多数样本至少含有两种药物：不列颠哥伦比亚省为75.2%，纽芬兰为91.4%，新不伦瑞克省/新斯科舍省为54.8%，这突出了累积效应的可能性。在最后一次已知治疗分别四年和三年后检测到阿维菌素苯甲酸盐和土霉素，这表明需要对化合物的总体持久性进行研究。
