Field evaluation of seven products to control cyanobacterial blooms in aquaculture
Field evaluation of seven products to control cyanobacterial blooms in aquaculture
复制标题
DOI：
10.1007/s11356-021-12708-0
复制
发表时间：
2021-02-12
影响因子：
5.8
通讯作者：
Wilson, Alan E.
中科院分区：
文献类型：
--
作者：
Buley, Riley P.;Adams, Catie;Wilson, Alan E.
有害藻华对水产养殖中常见的过度营养系统的水质产生负面影响。然而，很少有杀藻剂被批准用于食用鱼水产养殖。这项研究评估了七种产品对浮游植物（包括蓝藻）和浮游动物生物量的有效性，包括过氧化氢（浓缩液体或颗粒形式（PAK-27））、过氧乙酸（VigorOx SP-15和Peraclean）、铜（非螯合（粉末）或螯合（Captain）形式的硫酸铜）和粘土基产品（Phoslock）。每种产品都在14天的实验室和35天的现场实验中进行了测试，以评估其短期和长期性能。虽然一些产品（即，铜基过氧化氢和液态过氧化氢）迅速减少浮游植物，但由于叶绿素浓度在21天内恢复到起始浓度，因此影响是短暂的。相比之下，除了一种产品（即，浓缩的液体过氧化氢）维持低藻蓝蛋白浓度35天。浮游动物生物量的趋势显示大，大多数杀藻剂的负面影响，但是，浮游动物反弹，除铜为基础的产品的大多数治疗。总的来说，铜基产品仍然是减少水产养殖系统中浮游植物总生物量的最有效和最便宜的选择。然而，过氧乙酸基产品有效和快速地减少了蓝藻，同时对有益藻类和浮游动物的影响很小。对于水产养殖户来说，这种除藻剂可以成为铜基产品的有效替代品。
Harmful algal blooms negatively impact water quality in hypereutrophic systems that are common in aquaculture. However, few algaecides are approved for use in food-fish aquaculture. This study assessed the effectiveness of seven products, including hydrogen peroxide (as a concentrated liquid or in granular form (PAK-27)), peracetic acid (as VigorOx SP-15 and Peraclean), copper (as copper sulfate in unchelated (powder) or chelated (Captain) forms), and a clay-based product (as Phoslock) on phytoplankton (including cyanobacteria) and zooplankton biomass. Each product was tested in a 14-day laboratory and 35-day field experiment to assess their short- and long-term performance. Although some products (i.e., copper-based and liquid hydrogen peroxide) quickly reduced phytoplankton, effects were short-lived given that chlorophyll concentrations returned to starting concentrations within 21 days. In contrast, all but one product (i.e., concentrated liquid hydrogen peroxide) maintained low phycocyanin concentrations for 35 days. Zooplankton biomass trends showed large, negative effects for most algaecides; however, zooplankton rebounded for most treatments except for copper-based products. In general, copper-based products remain the most efficient and cheapest choice to reduce total phytoplankton biomass in aquaculture systems. However, peracetic acid-based products effectively and quickly reduced cyanobacteria while having marginal effects on beneficial algae and zooplankton. Such algaecides could be effective alternatives to copper-based products for aquaculture farmers.