Populations of Atlantic salmon have a surprisingly good capacity to adjust to warmer temperatures that are being seen with climate change, a group of scientists at the University of Oslo and University of British Columbia have discovered. The finding about Atlantic species adds to recent UBC-supported research on heat tolerance of Pacific salmon.
The new study, a collaboration between Norwegian and Canadian researchers, was recently published in Nature Communications. Funded by the Norwegian Research Council, it addressed questions around how climate change might affect salmon species distribution and abundance.
UBC authors of the study include Katja Anttila, a postdoctoral fellow who now works at the University of Turku in Finland, and Tony Farrell, Chair in Sustainable Aquaculture.
Scientists studied wild salmon from two European rivers. They compared a cold-water population from Norway's northern Alta River, where water temperatures have not exceeded 18 C for 30 years, with warm-water populations from France's Dordogne River, located 3,000 kilometers south, where annual water temperatures regularly exceed 20 C.
Eggs from both populations were hatched at the University of Oslo, where they were raised at 12 C or 20 C. Despite substantially different natural environments, both populations had remarkably similar capabilities when warmed.
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National Fisherman Live: 9/9/14
In this episode:
Seafood Watch upgrades status of 21 fish species
Calif. bill attacking seafood mislabeling approved
Ballot item would protect Bristol Bay salmon
NOAA closes cod, yellowtail fishing areas
Pacific panel halves young bluefin harvest
National Fisherman Live: 8/26/14
In this episode, National Fisherman Publisher Jerry Fraser talks about his early days dragging for redfish on the Vandal.
More than a dozen higher education institutions and federal and local fishery management agencies and organizations in American Samoa, Guam, the Commonwealth of the Northern Mariana Islands and Hawaii have signed a memorandum of understanding aimed at building the capacity of the U.S. Pacific Island territories to manage their fisheries and fishery-related resources.