Thiamine concentrations in lake trout eggs collected from the Great Lakes in 2019-20

Publication Date

2021-05-18

Start Date

2019

End Date

2020

Tillitt, D.E., Alberts, J.R., and Rinchard, J., 2021, Thiamine concentrations in lake trout eggs collected from the Great Lakes in 2019-20: U.S. Geological Survey data release, https://doi.org/10.5066/P9I4CZI7.

The U.S. Geological Survey has coordinated monitoring of thiamine concentrations in lake trout (Salvelinus namaycush) eggs from lakes Huron and Michigan in cooperation with state and federal natural resource agencies and tribal communities since the late 1990s. These data have been reported annually to the Great Lakes Fish Commission’s Fish Health Committee to help understand the threat posed by thiamine deficiency complex (TDC) on lake trout populations. TDC may be an impediment to natural reproduction by lake trout in the Great Lakes and may be an obstacle to lake trout restoration, and egg thiamine concentrations greater than 4-8 nmol/g have been recommended for successful lake trout reproduction. Continued annual monitoring is recommended to evaluate the effects of TDC on lake trout reproduction.

• Columbia Environmental Research Center (CERC)
• USGS Data Release Products