The ability of salmon hatcheries to increase wild salmon abundance may come at the cost of reduced diversity among wild salmon, according to a new University of Alaska Fairbanks–led study. The number of juvenile salmon released into the North Pacific Ocean by hatcheries increased rapidly in the second half of the last century and remains […]
Scientists examine effects of release timing and size at release on survival of hatchery-reared red king crab. A new study found that releasing red king crab as early as possible after they are reared in a hatchery may improve young crab survival and save operational costs. Scientists from the Alaska Fisheries Science Center observed that the best time […]
Adult sockeye salmon returning to spawn in the lakes of Bristol Bay, Alaska.Jason Ching/University of Washington An ample buffet of freshwater food, brought on by climate change, is altering the life history of one of the world’s most important salmon species. Sockeye salmon in Alaska’s Bristol Bay region are skipping an entire year […]
The mortality of larval Pacific oysters in Northwest hatcheries has been linked to ocean acidification. Yet the rate of increase in carbon dioxide in the atmosphere and the decrease of pH in near-shore waters have been questioned as being severe enough to cause the die-offs. Now, a new study of Pacific oyster and Mediterranean mussel […]