首页> 美国卫生研究院文献>Ecology and Evolution >Investigation on the Distribution of Bangana Tungting in Yuanshui Unique Fish Species National Aquatic Germplasm Resources Reserve Using Environmental DNA Technology
【2h】

Investigation on the Distribution of Bangana Tungting in Yuanshui Unique Fish Species National Aquatic Germplasm Resources Reserve Using Environmental DNA Technology

机译:利用环境DNA技术调查国家水生种质资源保护区元水特种盆加拉滕廷分布

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Freshwater ecosystems face unprecedented challenges as the cumulative impact of human activities intensifies. While protected areas and species‐specific conservation policies are widely implemented, their effectiveness remains difficult to gauge using traditional catch‐based surveys. This research employed environmental DNA (eDNA) technology to assess the distribution of the endangered fish, Bangana tungting, within the Yuanshui Unique Fish Species National Aquatic Germplasm Resources Reserve (YUFRR) in Hunan, China. Over a 2‐year period, we conducted comprehensive eDNA survey multiple sites within the YUFRR, confirming the species' continued existence in the area. In September 2022, B. tungting eDNA was detected at 8 of 60 sampling locations, while a follow‐up survey in May 2023 identified its presence at 4 of 44 sites. Further analysis revealed critical environmental factors influencing B. tungting distribution, primarily dissolved oxygen concentration and the presence of physical barriers such as hydroelectric stations. Our data suggest a minimum dissolved oxygen tolerance threshold of 4 mg/L for this species. Moreover, we observed an inverse relationship between B. tungting detection rates and both the number of hydroelectric stations and their distance to sampling sites. This case study demonstrates the effectiveness of eDNA technology in mapping the distribution of endangered fish species like B. tungting and guiding conservation strategies. Our findings emphasize the crucial need to enhance environmental conditions, particularly water quality and habitat suitability, to ensure the effective conservation of B. tungting within the YUFRR.
机译:随着人类活动的累积影响加剧,淡水生态系统面临着前所未有的挑战。虽然保护区和针对特定物种的保护政策得到了广泛实施,但使用传统的基于渔获量的调查仍然难以衡量其有效性。本研究采用环境 DNA (eDNA) 技术来评估濒危鱼类 Bangana tungting 在中国湖南省元水独特鱼类国家水生种质资源保护区 (YUFRR) 内的分布。在 2 年的时间里,我们对 YUDRR 内的多个地点进行了全面的 eDNA 调查,确认该物种在该地区继续存在。2022 年 9 月,在 60 个采样点中的 8 个检测到桐芽孢杆菌 eDNA,而 2023 年 5 月的后续调查在 44 个地点中的 4 个点发现了它的存在。进一步的分析揭示了影响 B. tungting 分布的关键环境因素,主要是溶解氧浓度和水电站等物理屏障的存在。我们的数据表明该物种的最低溶氧耐受阈值为 4 mg/L。此外,我们观察到 B. tungting 检出率与水电站数量及其到采样点的距离呈负相关关系。本案例研究展示了 eDNA 技术在绘制濒危鱼类(如 B. tungting)分布和指导保护策略方面的有效性。我们的研究结果强调了改善环境条件的迫切需要,特别是水质和栖息地适宜性,以确保在 YUFRR 内有效保护 B. tungting。

著录项

代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号