Filters: Tags: Steelhead Trout (X) > partyWithName: U.S. Geological Survey (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Columbia Environmental Research Center Freya E Rowland Donald E Tillitt U.S. Geological Survey - ScienceBase CERC Data Managers More... Tag Types Theme (1) Place (1) Harvest Set (1) USGS Scientific Topic Keyword (1) Tag Schemes National Agricultural Library Thesaurus (1) None (1) USGS Thesaurus (1) Geographic Names Information System (1) ISO 19115 Topic Category (1) View Results as: JSON ATOM CSV

Egg thiamine content, length, weight and survival of steelhead (Oncorhynchus mykiss) exposed to three methods of experimental thiamine supplementation in 2022 and egg thiamine content from three Oregon hatcheries in 2019 Early rearing of steelhead (Oncorhynchus mykiss) in Oregon hatcheries is often problematic; fry can become emaciated and die during the period between hatch and first feed. Thiamine (vitamin B1) deficiency has caused early mortality in salmonids; however, thiamine status of Oregon’s anadromous steelhead populations is currently unknown. We sampled eggs of 7-10 females during spawning from three Oregon hatcheries in 2019. In 2022, females were injected with buffered thiamine HCl 50 mg/kg prior to spawning; additionally, a subset of eggs were supplemented via bath treatment with thiamine mononitrate (1000 ppm) at spawning. We then compared egg thiamine from control and injected females, as well as measured mortality... Tags: Alsea Hatchery, Aquatic Biology, Big Creek Hatchery, Elk River Hatchery, Oregon, All tags... TDC, Thiamine Deficiency Complex, USGS Science Data Catalog (SDC), aquaculture, biota, fish, fish health, fishery management, hatcheries, health and disease, population and community ecology, recreational fishery resources, salmon, steelhead trout, thiamin, thiamin deficiency, vitamin B deficiency, vitamin B1, vitamin deficiency, Fewer tags