“…The need for management and conservation of exploited elasmobranchs is widely accepted (Dulvy et al, 2014), and the provisions CITES offers are a useful tool to encourage sustainable management for internationally traded species (Vincent, de Mitcheson, Fowler, & Lieberman, 2014). However, the merits of investing in the management and conservation of marine species, through the trade-related Convention, and the effectiveness, costs, impacts and benefits of this approach are still widely debated (Challender, Harrop, & MacMillan, 2015;Christie, Oracion, & Eisma-Osorio, 2011;Cochrane, 2015;Cochrane & Doulman, 2005;Foster, Wiswedel, & Vincent, 2016;Franckx, 2011;Guggisberg, 2016;Mace, O'Criodain, Rice, & Sant, 2014;. This is partly because a large range of established instruments and mechanisms for fisheries management already exist (Caddy & Cochrane, 2001;Cochrane & Garcia, 2009;Gutiérrez, Hilborn, & Defeo, 2011;Marashi, 1996;Melnychuk, Peterson, Elliott, & Hilborn, 2017), and because many species of elasmobranchs are caught as bycatch and have significant value for the domestic market, which is not subject to CITES controls.…”