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.

ABSTRACT: The European catfish (Silurus glanis 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-specif

SUBMITTER: Coya R 

PROVIDER: S-EPMC11761632 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature