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

Publication Date

2020-05-01

Start Date

1996

End Date

2018

Honeyfield, D.C., Riley, S.C., and Tillitt, D.E., 2020, Total thiamine concentrations in lake trout Salvelinus namaycush eggs in lakes Huron and Michigan, 1996-2018: U.S. Geological Survey data release, https://doi.org/10.5066/P9W3MUTU.

The purpose of this monitoring was to provide natural resource agencies tasked with management of fish populations in the Great Lakes with thiamine concentrations in the eggs of lake trout. Thiamine is an essential nutrient, and thiamine deficiency can result in reproductive failure due to mortality of eggs, embryos, or emergent fry. The concentrations of thiamine have been historically low over the past three decades in Great Lakes lake trout and other salmonines and has caused reproductive failures. Thiamine concentrations in the eggs of lake trout are used to help predict the potential of reproductive failures when below threshold levels. These data can be used to evaluate long-term trends in thiamine concentrations in lake trout eggs from lakes Huron and Michigan.

• Great Lakes Science Center (GLSC)
• USGS Data Release Products