Stock Annex: Alfonsinos (Beryx spp .) in subareas 1–10, 12 and 14 (the Northeast Atlantic and adjacent waters)

Stock definition: The alfonsinos Beryx spp. are deep-water species that occur throughout the world’s tropical and temperate waters, in depths from 25 to 1300 meters. The 2004 WGDEEP Report made reference to preliminary genetic results for B. splendens suggesting that significant genetic differentiation may occur between populations of the species within the North Atlantic, which may have some implications for future management of the fisheries. No further information is available. Because very little is known about stock structure of these species, the WG has assumed single-stocks of both B. splendens and B. decadactylus in the North Atlantic.