Environmental DNA and Hydroacoustic Surveys for Monitoring the Spread of the Invasive European Catfish (<i>Silurus glanis</i> Linnaeus, 1758) in the Guadalquivir River Basin, Spain
The European catfish (<i>Silurus glanis</i> Linnaeus, 1758) was introduced into the Ebro Basin in Spain in 1974 for recreational fishing. Since then, the species has spread throughout the country’s river basins, reaching the Iznájar Reservoir (Guadalquivir River Basin) in 2011. This area...
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2025-01-01
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| author | Ruth Coya Amadora Rodríguez-Ruiz Álvaro Fueyo Carlos Orduna Laura Miralles Ilaria de Meo Trinidad Pérez Juan Ramón Cid Carlos Fernández-Delgado Lourdes Encina Yaisel J. Borrell Carlos Granado-Lorencio |
| author_facet | Ruth Coya Amadora Rodríguez-Ruiz Álvaro Fueyo Carlos Orduna Laura Miralles Ilaria de Meo Trinidad Pérez Juan Ramón Cid Carlos Fernández-Delgado Lourdes Encina Yaisel J. Borrell Carlos Granado-Lorencio |
| author_sort | Ruth Coya |
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| description | The European catfish (<i>Silurus glanis</i> Linnaeus, 1758) was introduced into the Ebro Basin in Spain in 1974 for recreational fishing. Since then, the species has spread throughout the country’s river basins, reaching the Iznájar Reservoir (Guadalquivir River Basin) in 2011. This area is of great ecological and economic relevance, especially as it includes the Doñana National Park, one of the most important nature reserves in Europe. Recently, the presence of catfish has been reported in the lower reaches of the river. In this work, we used non-invasive vertical and horizontal hydroacoustic surveys and environmental DNA river sampling to unravel the actual distribution and dispersal pattern of the species in the lower Guadalquivir River. The hydroacoustic profiles and the species-specific detections by real-time PCR (qPCR) and droplet digital PCR (ddPCR) showed that these non-invasive methods allow the detection and quantification of catfish and provide valuable information on the species’ presence. We have confirmed the presence of catfish in most of the study area, including downstream areas of the Guadalquivir Basin. The results suggest the possibility of other isolated introductions and/or human-mediated movements of specimens, and imply that a coordinated catfish prevention and mitigation strategy is therefore urgently needed. |
| format | Article |
| id | doaj-art-8e34d08828de45c0b1eb7f5c253b2d1a |
| institution | Kabale University |
| issn | 2076-2615 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Animals |
| spelling | doaj-art-8e34d08828de45c0b1eb7f5c253b2d1a2025-01-24T13:18:26ZengMDPI AGAnimals2076-26152025-01-0115228510.3390/ani15020285Environmental DNA and Hydroacoustic Surveys for Monitoring the Spread of the Invasive European Catfish (<i>Silurus glanis</i> Linnaeus, 1758) in the Guadalquivir River Basin, SpainRuth Coya0Amadora Rodríguez-Ruiz1Álvaro Fueyo2Carlos Orduna3Laura Miralles4Ilaria de Meo5Trinidad Pérez6Juan Ramón Cid7Carlos Fernández-Delgado8Lourdes Encina9Yaisel J. Borrell10Carlos Granado-Lorencio11Department of Functional Biology, Genetics, University of Oviedo, 33006 Oviedo, SpainDepartment of Plant Biology and Ecology, University of Sevilla, 41012 Sevilla, SpainDepartment of Functional Biology, Genetics, University of Oviedo, 33006 Oviedo, SpainEcoFishUS Research S.L.L., 41009 Sevilla, SpainDepartment of Functional Biology, Genetics, University of Oviedo, 33006 Oviedo, SpainEcoFishUS Research S.L.L., 41009 Sevilla, SpainDepartment of Functional Biology, Genetics, University of Oviedo, 33006 Oviedo, SpainEcoFishUS Research S.L.L., 41009 Sevilla, SpainDepartment of Zoology, University of Cordoba, 14071 Cordoba, SpainDepartment of Plant Biology and Ecology, University of Sevilla, 41012 Sevilla, SpainDepartment of Functional Biology, Genetics, University of Oviedo, 33006 Oviedo, SpainDepartment of Plant Biology and Ecology, University of Sevilla, 41012 Sevilla, SpainThe European catfish (<i>Silurus glanis</i> Linnaeus, 1758) was introduced into the Ebro Basin in Spain in 1974 for recreational fishing. Since then, the species has spread throughout the country’s river basins, reaching the Iznájar Reservoir (Guadalquivir River Basin) in 2011. This area is of great ecological and economic relevance, especially as it includes the Doñana National Park, one of the most important nature reserves in Europe. Recently, the presence of catfish has been reported in the lower reaches of the river. In this work, we used non-invasive vertical and horizontal hydroacoustic surveys and environmental DNA river sampling to unravel the actual distribution and dispersal pattern of the species in the lower Guadalquivir River. The hydroacoustic profiles and the species-specific detections by real-time PCR (qPCR) and droplet digital PCR (ddPCR) showed that these non-invasive methods allow the detection and quantification of catfish and provide valuable information on the species’ presence. We have confirmed the presence of catfish in most of the study area, including downstream areas of the Guadalquivir Basin. The results suggest the possibility of other isolated introductions and/or human-mediated movements of specimens, and imply that a coordinated catfish prevention and mitigation strategy is therefore urgently needed.https://www.mdpi.com/2076-2615/15/2/285early detectionmonitoringechosoundereDNADoñana National Park |
| spellingShingle | Ruth Coya Amadora Rodríguez-Ruiz Álvaro Fueyo Carlos Orduna Laura Miralles Ilaria de Meo Trinidad Pérez Juan Ramón Cid Carlos Fernández-Delgado Lourdes Encina Yaisel J. Borrell Carlos Granado-Lorencio Environmental DNA and Hydroacoustic Surveys for Monitoring the Spread of the Invasive European Catfish (<i>Silurus glanis</i> Linnaeus, 1758) in the Guadalquivir River Basin, Spain Animals early detection monitoring echosounder eDNA Doñana National Park |
| title | Environmental DNA and Hydroacoustic Surveys for Monitoring the Spread of the Invasive European Catfish (<i>Silurus glanis</i> Linnaeus, 1758) in the Guadalquivir River Basin, Spain |
| title_full | Environmental DNA and Hydroacoustic Surveys for Monitoring the Spread of the Invasive European Catfish (<i>Silurus glanis</i> Linnaeus, 1758) in the Guadalquivir River Basin, Spain |
| title_fullStr | Environmental DNA and Hydroacoustic Surveys for Monitoring the Spread of the Invasive European Catfish (<i>Silurus glanis</i> Linnaeus, 1758) in the Guadalquivir River Basin, Spain |
| title_full_unstemmed | Environmental DNA and Hydroacoustic Surveys for Monitoring the Spread of the Invasive European Catfish (<i>Silurus glanis</i> Linnaeus, 1758) in the Guadalquivir River Basin, Spain |
| title_short | Environmental DNA and Hydroacoustic Surveys for Monitoring the Spread of the Invasive European Catfish (<i>Silurus glanis</i> Linnaeus, 1758) in the Guadalquivir River Basin, Spain |
| title_sort | environmental dna and hydroacoustic surveys for monitoring the spread of the invasive european catfish i silurus glanis i linnaeus 1758 in the guadalquivir river basin spain |
| topic | early detection monitoring echosounder eDNA Doñana National Park |
| url | https://www.mdpi.com/2076-2615/15/2/285 |
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