Comparison of Environmental DNA Metabarcoding and a Traditional Survey Method for Assessing Fish Diversity and Distribution Along Salinity Gradient in an Urban Brackish Reservoir, China
With the decrease in fish diversity, the monitoring of fish has become a current research hotspot. Here, the fish diversity and spatial distribution along a salinity gradient (0.28‰–3.32‰) in Xinglinwan Reservoir, China, were investigated using eDNA and the TSM. With the combination of both methods,...
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2024-11-01
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| author | Xu Wang Jiaqiao Wang Lin Lin Liangmin Huang Kai Liu Guangjie Dai Qianwen Cai Jun Li Shilong Feng Guangzhao Wang Yapeng Hui Longhui Qiu Fenfen Ji |
| author_facet | Xu Wang Jiaqiao Wang Lin Lin Liangmin Huang Kai Liu Guangjie Dai Qianwen Cai Jun Li Shilong Feng Guangzhao Wang Yapeng Hui Longhui Qiu Fenfen Ji |
| author_sort | Xu Wang |
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| description | With the decrease in fish diversity, the monitoring of fish has become a current research hotspot. Here, the fish diversity and spatial distribution along a salinity gradient (0.28‰–3.32‰) in Xinglinwan Reservoir, China, were investigated using eDNA and the TSM. With the combination of both methods, 12 species from 6 orders, 9 families, and 11 genera were observed. The invasive species <i>Oreochromis niloticus</i> had the highest relative abundance, accounting for 56.91% in the TSM and 89.80% in eDNA, respectively. eDNA detected 83.33% of the species detected using the TSM, and an additional six species (50.0% of the total species) were detected via only eDNA. Moreover, eDNA supplemented the unavailable abundance data from the TSM. The TSM revealed that the diversity and relative abundance of fish inhabiting seawater and brackish water increased with an increase in salinity, but this was not found using eDNA. Thus, our study highlights that Xinglinwan Reservoir has a low species richness and is suffering from the great harm of ecological invasion. Our findings also show that eDNA could be reliable for providing a comprehensive picture of fish, but discriminating the spatial heterogeneity of fish communities is a challenge for its widespread adoption in lentic brackish systems. |
| format | Article |
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| institution | Kabale University |
| issn | 2079-7737 |
| language | English |
| publishDate | 2024-11-01 |
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| spelling | doaj-art-62d336ae96d845e5a1ac72284b0fe87c2024-11-26T17:52:29ZengMDPI AGBiology2079-77372024-11-01131193010.3390/biology13110930Comparison of Environmental DNA Metabarcoding and a Traditional Survey Method for Assessing Fish Diversity and Distribution Along Salinity Gradient in an Urban Brackish Reservoir, ChinaXu Wang0Jiaqiao Wang1Lin Lin2Liangmin Huang3Kai Liu4Guangjie Dai5Qianwen Cai6Jun Li7Shilong Feng8Guangzhao Wang9Yapeng Hui10Longhui Qiu11Fenfen Ji12Fisheries College, Jimei University, Xiamen 361021, ChinaFisheries College, Jimei University, Xiamen 361021, ChinaFisheries College, Jimei University, Xiamen 361021, ChinaFisheries College, Jimei University, Xiamen 361021, ChinaFisheries College, Jimei University, Xiamen 361021, ChinaAgriculture, Rural and Water Resources Bureau of Jimei District, Xiamen 361022, ChinaAgriculture, Rural and Water Resources Bureau of Jimei District, Xiamen 361022, ChinaFisheries College, Jimei University, Xiamen 361021, ChinaFisheries College, Jimei University, Xiamen 361021, ChinaFisheries College, Jimei University, Xiamen 361021, ChinaFisheries College, Jimei University, Xiamen 361021, ChinaEngineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, ChinaFisheries College, Jimei University, Xiamen 361021, ChinaWith the decrease in fish diversity, the monitoring of fish has become a current research hotspot. Here, the fish diversity and spatial distribution along a salinity gradient (0.28‰–3.32‰) in Xinglinwan Reservoir, China, were investigated using eDNA and the TSM. With the combination of both methods, 12 species from 6 orders, 9 families, and 11 genera were observed. The invasive species <i>Oreochromis niloticus</i> had the highest relative abundance, accounting for 56.91% in the TSM and 89.80% in eDNA, respectively. eDNA detected 83.33% of the species detected using the TSM, and an additional six species (50.0% of the total species) were detected via only eDNA. Moreover, eDNA supplemented the unavailable abundance data from the TSM. The TSM revealed that the diversity and relative abundance of fish inhabiting seawater and brackish water increased with an increase in salinity, but this was not found using eDNA. Thus, our study highlights that Xinglinwan Reservoir has a low species richness and is suffering from the great harm of ecological invasion. Our findings also show that eDNA could be reliable for providing a comprehensive picture of fish, but discriminating the spatial heterogeneity of fish communities is a challenge for its widespread adoption in lentic brackish systems.https://www.mdpi.com/2079-7737/13/11/930fish diversityenvironmental DNA metabarcodingtraditional survey methodXinglinwan Reservoir |
| spellingShingle | Xu Wang Jiaqiao Wang Lin Lin Liangmin Huang Kai Liu Guangjie Dai Qianwen Cai Jun Li Shilong Feng Guangzhao Wang Yapeng Hui Longhui Qiu Fenfen Ji Comparison of Environmental DNA Metabarcoding and a Traditional Survey Method for Assessing Fish Diversity and Distribution Along Salinity Gradient in an Urban Brackish Reservoir, China Biology fish diversity environmental DNA metabarcoding traditional survey method Xinglinwan Reservoir |
| title | Comparison of Environmental DNA Metabarcoding and a Traditional Survey Method for Assessing Fish Diversity and Distribution Along Salinity Gradient in an Urban Brackish Reservoir, China |
| title_full | Comparison of Environmental DNA Metabarcoding and a Traditional Survey Method for Assessing Fish Diversity and Distribution Along Salinity Gradient in an Urban Brackish Reservoir, China |
| title_fullStr | Comparison of Environmental DNA Metabarcoding and a Traditional Survey Method for Assessing Fish Diversity and Distribution Along Salinity Gradient in an Urban Brackish Reservoir, China |
| title_full_unstemmed | Comparison of Environmental DNA Metabarcoding and a Traditional Survey Method for Assessing Fish Diversity and Distribution Along Salinity Gradient in an Urban Brackish Reservoir, China |
| title_short | Comparison of Environmental DNA Metabarcoding and a Traditional Survey Method for Assessing Fish Diversity and Distribution Along Salinity Gradient in an Urban Brackish Reservoir, China |
| title_sort | comparison of environmental dna metabarcoding and a traditional survey method for assessing fish diversity and distribution along salinity gradient in an urban brackish reservoir china |
| topic | fish diversity environmental DNA metabarcoding traditional survey method Xinglinwan Reservoir |
| url | https://www.mdpi.com/2079-7737/13/11/930 |
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