Addressing the future of Norway's pink salmon

In recent years, the presence of pink salmon in Norwegian rivers has dramatically increased. Fishermen, anglers and researchers alike are concerned that this non-native species could pose a significant threat to native species and ecosystems. Moreover, the fact that pink salmon decomposes and ultimately dies during its spawning stage can lead to severe contamination of the rivers it inhabits.Before it spawns, however, it makes for a tasty meal, which is why in Alaska, Canada, and Russia, pink salmon has long held economic significance. Caught in the sea or immediately upon its return to the river, it is considered a valuable food source."In its edible sea phase, it bears resemblance to the Atlantic salmon," says Dr. Simo Maduna, a researcher at NIBIO Svanhovd. "It's only after it begins its journey upstream in the rivers that the spawning-ready fish turns a gray-brown color, and the males develop their distinctive hump."Dr. Maduna and colleagues recently published a study on ...