Credit: Glenda Vélez Calabria (Colombia)
The photos show a part of the program carried out in the University of Cordoba, Spain. The university program contributes to the EU-funded program on the recovery plan for the European eel in the Guadalquivir River basin. This project component includes two stages which are namely, field trips and determination of the pigmentation stages of glass eels. The main objective was to review the creels or traps that had been placed previously in the Doñana National and Natural Park and the Guadiamar Green Corridor, in order to keep track of the biological conditions of adult eels that start their migration process towards the sea. It may worth mentioning that the European eel (Anguilla anguilla) was listed as ‘critically endangered’ by the International Union for the Conservation of Nature (IUCN). One of the photos shows the glass eel while the second photo shows the adult European eel.