Assessment of Fish Species Biodiversity in the Yong River Basin Based on Environmental DNA Metabarcoding
Fish in the Yong River basin have been significantly impacted by pollution, habitat modification and overfishing. In order to facilitate the recovery of freshwater biodiversity, a fishing ban has been implemented in the Yong River basin since 2022. However, the high level of human activity along the...
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2025-01-01
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| author | Shengming Deng Bai-an Lin Yan Luo Xiaolong Dang Chengdan Ma Yongcan Zhou Xiang Zhang Yang Zhang Ning Xu Shousong Jiang Jiana Li Jianlong Li |
| author_facet | Shengming Deng Bai-an Lin Yan Luo Xiaolong Dang Chengdan Ma Yongcan Zhou Xiang Zhang Yang Zhang Ning Xu Shousong Jiang Jiana Li Jianlong Li |
| author_sort | Shengming Deng |
| collection | DOAJ |
| description | Fish in the Yong River basin have been significantly impacted by pollution, habitat modification and overfishing. In order to facilitate the recovery of freshwater biodiversity, a fishing ban has been implemented in the Yong River basin since 2022. However, the high level of human activity along the waterways of the Yong River basin poses a significant challenge to the monitoring of fish biodiversity using established methods. It is essential, therefore, to have effective monitoring tools to assess the effectiveness of the fishing ban policy. In this study, environmental DNA (eDNA) metabarcoding was employed to assess fish species biodiversity across five river sections of the Yong River basin in October 2022. Additionally, we checked the results against fishing gear (drift gillnets and ground cages) surveys and historical records. A total of twenty-two fish species were found from eDNA metabarcoding, fourteen species were found via fishing, and only two species were found from both methods. The most dominant fish species identified by eDNA was <i>Alburnus mossulensis</i>, present in all river sections. However, a decline in species biodiversity was observed in the whole Yong River basin, with a significant difference in community composition across the Upper Yao River (UYAR) and Yong River (YOR). Moreover, eDNA detected fish and potentially invasive species consistent with their geographic distribution. Overall, the results of this study provide a snapshot of the current fish biodiversity in the Yong River basin, offering baseline data for future evaluations of fishing ban policies in this ecosystem. |
| format | Article |
| id | doaj-art-557d9d7488914cbd84c26fd61aff88d7 |
| institution | Kabale University |
| issn | 1424-2818 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-557d9d7488914cbd84c26fd61aff88d72025-01-24T13:29:26ZengMDPI AGDiversity1424-28182025-01-011713510.3390/d17010035Assessment of Fish Species Biodiversity in the Yong River Basin Based on Environmental DNA MetabarcodingShengming Deng0Bai-an Lin1Yan Luo2Xiaolong Dang3Chengdan Ma4Yongcan Zhou5Xiang Zhang6Yang Zhang7Ning Xu8Shousong Jiang9Jiana Li10Jianlong Li11Ningbo Research Institute of Ecological and Environmental Sciences, Ningbo 315000, ChinaSchool of Biological Sciences, The University of Hong Kong, Hong Kong SAR 999077, ChinaNingbo Research Institute of Ecological and Environmental Sciences, Ningbo 315000, ChinaNingbo Research Institute of Ecological and Environmental Sciences, Ningbo 315000, ChinaDepartment of Aquaculture, School of Marine Biology and Fisheries, Key Laboratory of Tropical Hydrobiology and Biotechnology, Hainan University, Haikou 570228, ChinaDepartment of Aquaculture, School of Marine Biology and Fisheries, Key Laboratory of Tropical Hydrobiology and Biotechnology, Hainan University, Haikou 570228, ChinaDepartment of Aquaculture, School of Marine Biology and Fisheries, Key Laboratory of Tropical Hydrobiology and Biotechnology, Hainan University, Haikou 570228, ChinaDepartment of Aquaculture, School of Marine Biology and Fisheries, Key Laboratory of Tropical Hydrobiology and Biotechnology, Hainan University, Haikou 570228, ChinaDepartment of Aquaculture, School of Marine Biology and Fisheries, Key Laboratory of Tropical Hydrobiology and Biotechnology, Hainan University, Haikou 570228, ChinaThe Haikou Marine Center of the Ministry of Natural Resources, Haikou 571126, ChinaNingbo Research Institute of Ecological and Environmental Sciences, Ningbo 315000, ChinaDepartment of Aquaculture, School of Marine Biology and Fisheries, Key Laboratory of Tropical Hydrobiology and Biotechnology, Hainan University, Haikou 570228, ChinaFish in the Yong River basin have been significantly impacted by pollution, habitat modification and overfishing. In order to facilitate the recovery of freshwater biodiversity, a fishing ban has been implemented in the Yong River basin since 2022. However, the high level of human activity along the waterways of the Yong River basin poses a significant challenge to the monitoring of fish biodiversity using established methods. It is essential, therefore, to have effective monitoring tools to assess the effectiveness of the fishing ban policy. In this study, environmental DNA (eDNA) metabarcoding was employed to assess fish species biodiversity across five river sections of the Yong River basin in October 2022. Additionally, we checked the results against fishing gear (drift gillnets and ground cages) surveys and historical records. A total of twenty-two fish species were found from eDNA metabarcoding, fourteen species were found via fishing, and only two species were found from both methods. The most dominant fish species identified by eDNA was <i>Alburnus mossulensis</i>, present in all river sections. However, a decline in species biodiversity was observed in the whole Yong River basin, with a significant difference in community composition across the Upper Yao River (UYAR) and Yong River (YOR). Moreover, eDNA detected fish and potentially invasive species consistent with their geographic distribution. Overall, the results of this study provide a snapshot of the current fish biodiversity in the Yong River basin, offering baseline data for future evaluations of fishing ban policies in this ecosystem.https://www.mdpi.com/1424-2818/17/1/35the Yong River basineDNA metabarcodingfreshwaterfish monitoringfish biodiversityhabitat type |
| spellingShingle | Shengming Deng Bai-an Lin Yan Luo Xiaolong Dang Chengdan Ma Yongcan Zhou Xiang Zhang Yang Zhang Ning Xu Shousong Jiang Jiana Li Jianlong Li Assessment of Fish Species Biodiversity in the Yong River Basin Based on Environmental DNA Metabarcoding Diversity the Yong River basin eDNA metabarcoding freshwater fish monitoring fish biodiversity habitat type |
| title | Assessment of Fish Species Biodiversity in the Yong River Basin Based on Environmental DNA Metabarcoding |
| title_full | Assessment of Fish Species Biodiversity in the Yong River Basin Based on Environmental DNA Metabarcoding |
| title_fullStr | Assessment of Fish Species Biodiversity in the Yong River Basin Based on Environmental DNA Metabarcoding |
| title_full_unstemmed | Assessment of Fish Species Biodiversity in the Yong River Basin Based on Environmental DNA Metabarcoding |
| title_short | Assessment of Fish Species Biodiversity in the Yong River Basin Based on Environmental DNA Metabarcoding |
| title_sort | assessment of fish species biodiversity in the yong river basin based on environmental dna metabarcoding |
| topic | the Yong River basin eDNA metabarcoding freshwater fish monitoring fish biodiversity habitat type |
| url | https://www.mdpi.com/1424-2818/17/1/35 |
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