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Susan M. Schleis

Position title: Biologist

Email: sschleis@usgs.gov
Phone: 608.781.6304
Fax: 608.783.6066

Education:
1993, B.A., Biology, Silver Lake College, Manitowoc, Wisconsin

Primary Responsibilities/Activities:
As a biologist in the Aquatic Ecosystems Health branch, my research projects primarily support the effort to gain US Food and Drug Administration (FDA) approval of drugs used in aquaculture. My focus has been in the areas of target animal safety, tissue residue depletion, and drug efficacy. However, I also participate in studies that investigate the environmental fate of various drugs and chemicals, lend assistance to the Invasive Species work group, and provide back-up in our Fish Culture facility.

Research Interests:

• Evaluation of the Environmental Safety of Aquaculture Drugs
• Evaluation of the Safety of Aquaculture Drugs
• Evaluation of the Effectiveness of Aquaculture Drugs

Active Projects:

• Target Animal Safety of Aquaflor® medicated feed to tilapia
• Efficacy of florfenicol and oxytetracycline dihydrate in reducing mortalities in finfish caused by MAS
• Depletion of florfenicol amine in rainbow trout maintained in a recirculation aquaculture system following Aquaflor® medicated feed therapy

Select Publications:
Gaikowski, M.P., M. Mushtaq, P. Cassidy, J.R. Meinertz, S.M. Schleis, D. Sweeney, and R.G. Endris. 2010. Depletion of florfenicol amine, marker residue of florfenicol, from the edible fillet of tilapia (Oreochromis niloticus x O. niloticus and O. niloticus  x O. aureus) following florfenicol administration in feed. Aquaculture. 301:1-6.

Rach, J.J., A. Johnson, J.B. Rudacille, and S.M. Schleis. 2008. Efficacy of oxytetracycline hydrochloride bath immersion to control external columnaris disease on walleye and channel catfish fingerlings. North American Journal of Aquaculture. 70:459-465.

Rach J.J., T. M. Schreier, S. M. Schleis, and M. P. Gaikowski.  2005.  Efficacy of Hydrogen Peroxide and Formalin to Control Mortality Associated with Saprolegniasis Infections on Channel Catfish.  Journal of North American Aquaculture.  65:300-305.

Gaikowski, M.P., J.C. Wolf, S.M. Schleis, and W.H. Gingerich.  2003.  Safety of oxytetracycline (Terramycin, TM-100F) administered in feed to hybrid striped bass, walleye, and yellow perch.  Journal of Aquatic Animal Health.  15:274-286.

Rach, J.J., S.M. Schleis,  M.P. Gaikowski, and A. Johnson.  2003.  Efficacy of hydrogen peroxide in controlling mortality associated with external columnaris on walleye and channel catfish fingerlings.  North American Journal of Aquaculture.  65:300-305.

Links:

Impacts of Human Contaminants

Aquatic Invasive Species

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