Underwater Cameras: A must-have tool for offshore aquaculture
Whether fixed or mobile, an underwater camera allows a necessary window into a world otherwise difficult to access.
Bacterial Coldwater Disease Less Prevalent In Hatcheries
Bacterial coldwater disease threatens wild and hatchery-raised salmonid fishes around the world, as well as the economic impacts that they offer. The disease is unfortunately spread through both contact with other fishes as well as through sexual reproduction.
Building Salmon Knowledge In Alaska
Researchers at the University of California, Santa Barbara, are partnering with salmon experts around Alaska to make it easier to share findings about the fish, according to a release.
Scientists Look To Prevent Another Sockeye Salmon Kill In Columbia River
Pretty much all options are on the table this year for preventing another massive sockeye salmon kill in Idaho’s Columbia River, according to the Associated Press. In 2015, less than 15 percent of the salmon stocked in the river made it to the water bodies they were migrating toward.
Nigiri Project Looks At Floodplains To Support Salmon Populations
For many years, experiments conducted on the rice fields of Knaggs Ranch, in California’s Yolo Bypass, have yielded accelerated growth rates for juvenile Chinook salmon, according to a release from the University of California, Davis. The experiments are part of the Nigiri Project, an effort that looks to assess how floodplains can support healthy populations of salmon.
More Chinook Salmon Stocked In Sacramento River After Low Years
Fisheries biologists have been trying to help endangered Chinook salmon in the Sacramento River for a few years now. But last year, after a horrible rise in summer water temperatures, about 95 percent of those fish that had been stocked were killed.
Intensively Monitored Watersheds Show Restoration Benefits
Since the 1990s, billions of dollars have been invested in works across the United States to improve stream health for fish. But many of the projects, through a lack of monitoring or recording of basic details, have provided little information for other researchers looking to learn from their approaches.
Wisconsin DNR Scientists Assess Trends Of PCBs In Lake Michigan Salmon
The Wisconsin Department of Natural Resources began tracking the levels of polychlorinated biphenyls (PCBs) in Lake Michigan salmon in 1975. That was two years before their use and manufacture was banned in the United States.
Armored Shorelines In Seattle’s Elliott Bay Impact Chum Salmon Food Choices
Like many commercial waterfronts, Seattle’s Elliott Bay has been built to withstand the natural forces of erosion. This has come with the addition of structures like concrete seawalls and piles of riprap, most of which were put in place in the 1930s.
In Last Five Years, 50 Percent Of Lake Michigan Chinook Reproduced Naturally
At least 50 percent of chinook salmon found in Lake Michigan over the last five years have been naturally reproduced, according to the Milwaukee Journal Sentinel. Chinooks have shown that they are very good at producing large year classes of wild fish, thanks to Michigan streams they spawn in.
