自7月以来,BC的弗雷泽河中有71只鱼死亡;正在进行研究以找到原因. 71 sturgeon died in BC’s Fraser River since July; research underway to find causes.

不列颠哥伦比亚省弗雷泽河沿岸的鲟鱼死亡人数激增，促使 Tsawwassen 原住民启动了一个研究项目。 A surge in sturgeon deaths along British Columbia’s Fraser River has led the Tsawwassen First Nation to launch a research project. 自 7 月以来，已有 71 条鲟鱼死亡，其中 65 条在弗雷泽河下游，远高于往年。 Since July, 71 sturgeon have died, with 65 in the lower Fraser, far above past years. 研究人员正在收集、冻结和用追踪器标记尸体,以便研究其行踪和死亡原因。 Researchers are collecting, freezing, and tagging carcasses with trackers to study their movement and causes of death. 河流温度上升、生境丧失、螺旋桨伤害和刺网捕捉是可能的威胁,特别是因为水温超过20摄氏度。 Rising river temperatures, habitat loss, propeller injuries, and gill net captures are suspected threats, especially as water temperatures exceeded 20°C. 环境DNA分析也被用来评估鱼的存在和压力. Environmental DNA analysis is also being used to assess sturgeon presence and stress. 该项目旨在为古代鱼类的保护战略提供信息。 The project aims to inform conservation strategies for the ancient fish.