Filtration and fertilisation effects of the bivalves Mytilus edulis and Magallana gigas on the kelp Saccharina latissima in tank culture
Filtration and fertilisation effects of the bivalves Mytilus edulis and Magallana gigas on the kelp Saccharina latissima in tank culture
复制标题
双壳贝类贻贝和大麦哲伦对罐养海带的过滤和受精作用
DOI：
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发表时间：
2021
影响因子：
3.3
通讯作者：
H. Pavia
中科院分区：
文献类型：
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作者：
M. Hargrave;Anothai Ekelund;G. Nylund;H. Pavia
由机会性附生植物引起的生物污损是海藻水产养殖中的主要问题。污损生物的定植导致藻类性能下降以及农作物质量下降。此外，真菌去除技术通常增加栽培系统的维护成本。已经有多种方法来减轻海藻的罐培养中的结垢，包括使用生物控制。在这里，我们提出了使用过滤器喂养的双壳类，蓝贻贝（紫贻贝）和太平洋牡蛎（Magallana gigas），作为一种新型的生物过滤器，也可作为一个来源的溶解无机氮的糖海带，latissima罐培养。我们观察到，通过双壳类过滤，海藻叶片上的污损附生植物显著减少了约50%，双壳类的铵（NH4+）和磷酸盐（PO43−）显著升高，并且当与双壳类共同培养时，海带组织质量发生改变，而不是提供环境海水。稳定同位素比值和海水叶绿素a浓度为双壳类生物过滤及其副产物进入海带组织提供了证据。
Biofouling by opportunistic epiphytes is a major concern in seaweed aquaculture. Colonisation of fouling organisms contributes to a reduction in algal performance as well as a lower quality crop. Further, epiphyte removal techniques often increase maintenance costs of cultivation systems. There have been a variety of methods to mitigate fouling in tank cultivations of seaweed, including the use of biological controls. Here, we present the use of filter feeding bivalves, the blue mussel (Mytilus edulis) and Pacific oyster (Magallana gigas), as a novel biofilter that also serves as a source of dissolved inorganic nitrogen in tank cultivations of the sugar kelp, Saccharina latissima. We observed significant reductions of fouling epiphytes on seaweed blades of around 50% by bivalve filtration, significant elevations of ammonium (NH4+) and phosphate (PO43−) by bivalves and alterations to kelp tissue quality when co-cultivated with bivalves rather than supplied with ambient seawater. Stable isotope ratios and seawater chlorophyll a concentrations provided evidence for bivalve biofiltration and the incorporation of their by-products into kelp tissue.