نتایج جستجو برای: hatcheries
تعداد نتایج: 619 فیلتر نتایج به سال:
Hatcheries have long produced salmonids for fisheries and mitigation, though their widespread use is increasingly controversial because of potential impacts to wild salmonids. We conducted a global literature search peer-reviewed publications (1970–2021) evaluating how hatchery affected salmonids, developed publicly available database, synthesized results. Two hundred six met our criteria, with...
Eastern oysters, Crassostrea virginica, Northern hard clams, Mercenaria mercenaria, soft-shell clams, Mya arenaria, and bay scallops, Argopeclen irradians are routinely cultured in shellfish hatcheries throughout the northeastern United States for private sale, public stock enhancement and management programs. The culture process involves spawning adults, rearing the resultant larvae in large t...
Olympia oysters are the only oyster native to the west coast of North America. The population within Puget Sound, WA has been decreasing significantly since the early 1900's. Current restoration efforts are focused on supplementing local populations with hatchery bred oysters. A recent study by Heare et al. (2017) has shown differences in stress response in oysters from different locations in P...
A retrospective whole-population survey was used to investigate putative risk factors for bacterial gill disease (BGD) in young hatchery-reared rainbow trout in North America. Three sets of analyses were done. The first analysis included as cases all of the hatcheries in which there was at least one outbreak of BGD during the 2-year study interval, regardless of location of the outbreak in the ...
The Persian sturgeon (Acipenser persicus) is considered as an endemic sturgeon of the south part of the Caspian Sea and provides the highest Iranian caviar production. Due to overfishing, degradation of the rivers conditions of the natural reproductive habitats, the fish stocks is decreasing. The immature breeders do not response to hormonal therapy at the sturgeon hatcheries as most having PI...
The Persian sturgeon (Acipenser persicus) is considered as an endemic sturgeon of the south part of the Caspian Sea and provides the highest Iranian caviar production. Due to overfishing, degradation of the rivers conditions of the natural reproductive habitats, the fish stocks is decreasing. The immature breeders do not response to hormonal therapy at the sturgeon hatcheries as most ha...
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