Fishing for DNA to measure biodiversity

Identifying the fish species present in a river based on traces of their DNA: this method has been successfully tested at about 90 sites in Switzerland

07-Dec-2023 - As they swim around, fish leave DNA fragments behind them, e.g. via their skin or their excrements. Once collected and analysed, these indicators allow scientists to determine all the species present in the environment. What's more, the method is precise, simpler and less harmful to the fish than ...