CITES : instrument de conservation : comment amender les annexes de la Convention sur la Commerce International des Espèces de Faune et de Flore Sauvages Menacées d'Extinction
1989
Bräutigam, Amie |
Sharks and their relatives, the rays and chimaeras, are the diverse group of cartilaginous fishes that have evolved over 400 million years. Historically considered of low economic value to large-scale fisheries, today many of these fishes have become the target of directed commercial and recreational fisheries around the world, and they are increasingly taken in the by-catch of fisheries targeting other species.