Scientists have just released a study proving that domesticated salmon are just a fertile as wild salmon. These findings raise even more concerns about the risks of salmon farming in relation to preserving wild gene pools.
It is well documented that many farmed salmon escape into the wild each year. These fish, acting on instinct to spawn will often times migrate up rivers and do just that. The major problem with this is that these farmed salmon introduce new genes into wild populations that are often times not beneficial. Farmed salmon are notoriously lacking in their ability to sense predators and are often times very aggressive. These traits bode well for domesticated salmon in captivity but can be extremely detrimental to wild populations.
To reach their conclusions on farmed salmon fertility, researchers used in vitro fertilization, as well as, “tests of sperm competitiveness and egg compatibility.” Their results proved that farmed salmon pose a threat to wild gene pools.