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Jeffery R. Meinertz

Position title:  Research Physiologist

Email:  jmeinertz@usgs.gov
Phone: 608.781.6291
Fax: 608.783.6066

Education:
1985, B.S., Biology, University of Wisconsin-La Crosse
1989, M.S., Biology, University of Wisconsin-La Crosse

Primary responsibilities/activities: 
As a principle investigator, my research efforts focus on developing data to gain the approval of new aquaculture drugs and to expand the uses of existing aquaculture drugs and develop techniques to assess chronic impacts of pharmaceuticals and personal care products on aquatic invertebrates. I determine total drug residue and metabolite depletion profiles, determine an aquaculture drug’s marker residue depletion profiles, and develop and validate analytical methods for aquaculture drug residues in water and fish tissue. I also develop techniques to chronically expose daphnia and juvenile mussels to pharmaceuticals in a flow through test system.

Research interests: 

• analytical chemistry
• metabolism and depletion of drugs by fish
• the effects of pharmaceuticals and personal care products in aquatic environments

Active projects: 

• Depletion of Florfenicol Amine from the Fillet Tissue of Rainbow Trout (Oncorhynchus Mykiss) Maintained in a Recirculating Aquaculture System and Treated with Aquaflor®-medicated Feed
• The Availability of Freshwater Fish to the Angling Public Following Electrical Immobilization and Sedation by Benzocaine or Eugenol
• Method Transfer Study for the Analytical Method to Determine 17-Amethyltestosterone Concentrations in Fish Feed
• Determining exposure parameters that maximize eugenol residues in the fillet tissue and determining the sample times that will adequately characterize the depletion of eugenol residues from the fillet tissue of rainbow trout exposed to AQUI-S® 20E
• Eugenol total residue depletion from the skin-on fillet tissue of rainbow trout exposed to ¹⁴C labeled Aqui-S® 20E

Select Publications:
Meinertz, J.R., T.M. Schreier, J.A. Bernardy. Chronic Toxicity of Erythromycin Thiocyanate to Daphnia, Daphnia magna, in a Flow-Through, Continuous Exposure Test System. Bulletin of Environmental Contamination and Toxicology. Accepted for publication September 8, 2011.

Meinertz, J.R., T.M. Schreier, K.R. Hess, and M.R. Bartsch. 2011. Survival and growth of newly transformed Lampsilis cardium (Rafinesque, 1820) and Lampsilis siliquoidea (Barnes, 1823), in a flow- through, continuous feeding test system. American Malacological Bulletin, 29:69-75.

Meinertz, J.R., and T.M. Schreier. 2009. Depletion of isoeugenol residues from the fillet tissue of AQUI-S™ exposed rainbow trout (Oncorhynchus mykiss). Aquaculture, 296:200-206.

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.

Meinertz, J.R., G.R. Stehly, S.L. Greseth, M.P. Gaikowski, and W.H. Gingerich.  2004. Depletion of the chloramine-T marker residue, para-toluenesulfonamide, from skin-on fillet tissue of hybrid striped bass, rainbow trout, and yellow perch.  Aquaculture, 235:65-75.

Meinertz, J.R., G.R. Stehly, W.H. Gingerich, and S.L. Greseth.  2001.  Performance of a proposed determinative method for p-TSA in rainbow trout fillet tissue and bridging the proposed method with a method for total chloramine-T residues in rainbow trout fillet tissue.  Journal of AOAC International, 84:1332-1336.

Meinertz, J.R., M.P. Gaikowski, G.R. Stehly, W.H. Gingerich, and J.A. Evered.  2001. Oxytetracycline Depletion from Skin-on Fillet Tissue of Coho Salmon Fed Oxytetracycline Medicated Feed in Freshwater at Temperatures Less Than 9 ̊C.  Aquaculture, 198:29-39.

Stehly, G.R., J.R. Meinertz, and W.H. Gingerich.  2000.  Effects of temperature on the elimination of benzocaine and acetylated benzocaine residues from the edible fillet of rainbow trout (Oncorhynchus mykiss).  Food Additives and Contaminants, 17:387-392.

Links:

Aquatic Toxicology

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