Thiamine Deficiency Complex in Salmonines from Lake Ontario

Session: 08a. - Restoration of Native Fishes

Jacques Rinchard, The College at Brockport, State University of New York, jrinchar@brockport.edu
Matthew Futia, The College at Brockport - State University of New York, mfuti1@u.brockport.edu
Donald Tillitt, U.S. Geological Survey, Columbia Environmental Research Ctr., dtillitt@usgs.gov
Steven Smith, U.S. Geological Survey, Columbia Environmental Research Center, stevensmith@usgs.gov
Clifford Kraft, Cornell University, Dept. of Natural Resource, cek7@cornell.edu

Abstract

Thiamine deficiency complex (TDC) is a reproductive disorder affecting health and recruitment of various salmonine species in the Great Lakes region. Although the cause of TDC is unknown, it has been linked to high consumption of Alewife, a major prey fish in Lake Ontario. In the present study, thiamine concentrations, thiamine dependent enzymes, and fatty acid signatures were determined for Steelhead Trout, Lake Trout, Coho Salmon, and Chinook Salmon collected in fall 2016 and 2017. Thiamine was measured in gonad, liver, and muscle tissue; thiamine dependent enzymes were measured in brain tissue; and fatty acid signatures were determined from belly flap. Comparisons among thiamine concentrations, thiamine dependent enzymes, and fatty acid signatures for these species will be discussed.

1. Keyword
vitamin B

2. Keyword
salmon

3. Keyword
Lake Ontario