“…Improved resistance to infectious diseases through selective breeding has been demonstrated in previous studies (Doan et al, ; Trang, Nguyen, Nguyen, Wayne, & Nguyen, ). Across aquaculture species, heritabilities (h 2 ) for resistance to a range of diseases from parasites to bacteria and virus are low to moderate (Ødegård, Baranski, Gjerde, & Gjedrem, ), for instance, h 2 = 0.03 – 0.18 for resistance to Aeromonas salmonicida bacteria in Atlantic salmon ( Salmo salar ) (Gjerde, Evensen, Bentsen, & Storset, ; Kjøglum, Henryon, Aasmundstad, & Korsgaard, ; Ødegård, Olesen, Gjerde, & Klemetsdal, , ; Olesen, Hung, & Ødegård, ); h 2 = 0.05–0.25 for resistance to Yersinia ruckeri and Flavobacterium psychrophilum bacteria in rainbow trout ( Oncorhynchus mykiss ) (Evenhuis, Leeds, Marancik, Lapatra, & Wiens, ; Hastefnl, Guo'ding, & Eve‐Risen, ; Leeds et al, ; Silverstein et al, ; Wiens et al, ); h 2 = 0.03 and 0.04 for resistance to Aeromonas hydrophila bacteria in Rohu carp ( Labeo rohita ) (Mahapatra et al, ) and in common carp ( Cyprinus carpio ) (Ødegård et al, ), respectively; or h 2 = 0.08 for resistance to Vibrio anguillarum in Atlantic cod (Kettunen, Serenius, & Fjalestad, ). There are also reports of moderate heritability for disease resistance in salmon or rainbow trout (Yáñez, Houston, & Newman, ).…”