USGS Home
Contact USGS
Search USGS

Home/ Overview/ Science Programs/ Data Library/ Products and Publications/States/ Rivers/Teachers and Students/ Links/ Contact/ Search

Theresa Schreier

Position title:  General Biologist

Email: tschreier@usgs.gov
Phone: 608.781.6254
Fax: 608.783.6066

Education:
1988 B.S., Microbiology, University of Wisconsin - La Crosse 

Primary Responsibilities/Activities:
My research efforts focus on the development of analytical methods for analysis of residues of fishery chemicals.  This work is conducted according to guidelines set by Good Laboratory Practices.  I also assist with target animal safety and efficacy studies to generate data to complete registration requirements for aquaculture drugs.  We are also working on a new research initiative investigating the affects of pharmaceuticals and personal care products on the aquatic environment.  My prior research at the lab involved the development of a replacement fungicide for malachite green for use on cultured fish and fish eggs. 

Research Interests: 

• Analytical chemistry
• Aquatic toxicology
• Target animal safety studies
• Efficacy studies
• Pharmaceuticals and personal care products in the aquatic environment

Active Projects: 

• Determination of an approach to assess the impact of emerging contaminants on aquatic invertebrates in national parks:  A project for the St. Croix National Scenic Riverway (Pharmaceutical and personal care products team)
• Evaluation of a proposed determinative method for determining concentrations of isoeugenol in fillet tissue from cold, cool, and warm water fish species (Fisheries management chemicals and drugs team)

Select Publications:

Meinertz, J.R., Greseth, S.L., Schreier, T.M., Bernardy, J.A., and Gingerich, W.H.  2006.  Isoeugenol concentrations in rainbow trout (Oncorhynchus mykiss) skin-on fillet tissue after exposure to AQUI-S™ at different temperatures, durations, and concentrations.  Aquaculture, 254: 347-354.

Jeff Rach, Theresa Schreier, Mark Gaikowski, and Sue Schleis.  2005.  Efficacy of formalin and Hydrogen Peroxide to Increase Survival of Channel Catfish Infected with Saprolegniasis.  North American Journal of Aquaculture 67:312-318.

Schreier, T.M., V.K. Dawson, Y. Choi, N.J. Spanjers, and M.A. Boogaard.  2000.  Determination of niclosamide residues in rainbow trout (oncorhynchus mykiss) and channel catfish (ictalurus punctatus) fillet tissue by high performance liquid chromatography.  J. of Agriculture and Food Chemistry 48 (6):2212-2215.

Schreier, T.M., J.J. Rach, and G.E. Howe.  1996.  Efficacy of formalin, hydrogen peroxide, and sodium chloride on fungal-infected rainbow trout eggs.  Aquaculture 140:323-331.

Links:
Aquaculture Drug Research and Development

Research support to the Federal-State Drug Approval Partnership Project

Return to Staff Directory