The Benguela Current in the Atlantic is one of the four major upwelling systems on the Eastern boundary of the world ocean. Thus the coastal regions off Namibia are prone to high primary productivity that can lead to Harmful Algae Blooms as this nutrient rich water reaches the euphotic zone. Yessotoxins (YTXs) produced by G. spinifera were detected in Namibian phytoplankton field samples in 2011. Isolation of G. spinifera cultures from this location in 2012 enabled molecular genetics work and further liquid chromatography-mass spectrometry assessment of toxin profiles. The molecular work grouped the Benguela G. spinifera with other toxic G. spinifera strains originating from Italy and New Zealand. The main YTX analogs present in the Benguela G. spinifera are homo-YTX, YTX and a hydroxylated analogue. This work adds important knowledge on the occurrence of Harmful Algae Blooms in this region and is of relevance for safety.

大西洋的本格拉水流是世界海洋东部边界上的四个主要上升流系统之一。因此，纳米比亚以外的沿海地区倾向于高初级生产力，当这种营养丰富的水到达富营养区时，会导致有害藻类大量繁殖。2011年在纳米比亚的浮游植物田间样品中检测到了棘孢杆菌产生的Yessotoxins（YTXs）。2012年从该地点分离出棘孢杆菌培养物使得分子遗传学得以开展，并且进一步进行了液相色谱-质谱分析毒素谱。分子工作将Benguela G. spinifera与其他有毒的G. spinifera分组源于意大利和新西兰的菌株。主YTX类似物存在于本格拉G.具刺是均聚YTX，YTX和羟基化的类似物。这项工作增加了有关该地区有害藻类繁殖的发生的重要知识，并且对安全性具有重要意义。