Total thiamine concentrations in lake trout Salvelinus namaycush eggs in lakes Huron and Michigan, 1996-2018

Monitoring of vitamin B1 (thiamine) in the eggs of lake trout (Salvelinus namaycush) collected from lakes Huron and Michigan has been conducted by the U.S. Geological Survey since the mid-1990’s. The results of this monitoring effort have been used by natural resource management agencies and native American tribes within the Great Lakes basin to evaluate the reproductive health of lake trout. The data in this release are the thiamine concentrations measured in lake trout collected from 1996-2018. Results are reported as total thiamine (nmol/g-egg), collection site, lake, year collected, and reference to the analysis methods.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:5dea990ce4b02caea0f06e75
metadata_type geospatial
modified 20200820
old-spatial -88.374, 41.2282, -79.6509, 46.4227
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash ebd9d490b4b66b61feeff54d4aea7ffa03043a70
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-88.374, 41.2282], [-88.374, 46.4227], [ -79.6509, 46.4227], [ -79.6509, 41.2282], [-88.374, 41.2282]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • alewife
  • amerigeo
  • amerigeoss
  • aquatic-biology
  • aquatic-ecosystems
  • biota
  • canada
  • ckan
  • commercial-fishery-resources
  • early-mortality-syndrome
  • ecosystem-monitoring
  • ems
  • environmental-assessment
  • fish
  • fish-spawning-and-larval-aggregation
  • fisheries-biology
  • fishery-management
  • freshwater-ecosystems
  • geo
  • geoss
  • great-lakes
  • hazards
  • health-and-disease
  • illinois
  • indiana
  • inland-fishery-resources
  • lake-huron
  • lake-michigan
  • lake-trout
  • laurentian-great-lakes
  • long-term-ecological-monitoring
  • michigan
  • national
  • north-america
  • ontario
  • population-and-community-ecology
  • recreational-fishery-resources
  • risk-assessment
  • salvelinus-namaycush
  • tdc
  • thiamine
  • thiamine-deficiency
  • thiamine-deficiency-complex
  • united-states
  • usgs-5dea990ce4b02caea0f06e75
  • vitamin-b1
  • vitamin-deficiency
  • wildlife-disease
  • wisconsin
isopen False
license_id notspecified
license_title License not specified
maintainer Donald E Tillitt
maintainer_email dtillitt@usgs.gov
metadata_created 2025-11-22T17:58:08.389105
metadata_modified 2025-11-22T17:58:08.389110
notes Monitoring of vitamin B1 (thiamine) in the eggs of lake trout (Salvelinus namaycush) collected from lakes Huron and Michigan has been conducted by the U.S. Geological Survey since the mid-1990’s. The results of this monitoring effort have been used by natural resource management agencies and native American tribes within the Great Lakes basin to evaluate the reproductive health of lake trout. The data in this release are the thiamine concentrations measured in lake trout collected from 1996-2018. Results are reported as total thiamine (nmol/g-egg), collection site, lake, year collected, and reference to the analysis methods.
num_resources 2
num_tags 49
title Total thiamine concentrations in lake trout Salvelinus namaycush eggs in lakes Huron and Michigan, 1996-2018