USGS Columbia Environmental Research Center: Donald Tillitt, PhD, Branch Chief (Research Toxicologist)

Donald Tillitt PhD, Branch Chief, Biochemistry/Physiology

Donald Tillitt, PhD, Branch Chief

Research Toxicologist
Employer: USGS
Staff Type: Center Staff
Duty Station: Columbia, MO
Branch: Biochemistry / Physiology: Biochemistry
Phone: (573) 876-1886
Fax: (573) 876-1896
I lead an active research program on the effects of chemicals on fish and wildlife, with an emphasis on reproduction and development in fish that focuses on effects of persistent chemicals. Multiple levels of biological organization are generally evaluated in these research efforts, using endpoints of molecular, biochemical, histological and behavioral effects. Current research projects include: 1) effects of PCBs and dioxins on development in sturgeon species; 2) causes and effects of thiamine (vitamin B1) deficiencies on Great Lakes salmonines; 3) effects of endocrine disrupting chemicals on sexual differentiation and gonad development in fish; 4) effects of agricultural chemicals (eg., atrazine) on fish reproduction and development; 5) gene expression patterns along the hypothalamus-pituitary-gonad axis of fish after methylmercury exposure; and 6) comparative analysis of epigenetic effects on endocrine disrupting chemicals across vertebrate taxa.

In The News

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      • Tamasi, Anna, Student Services
      • Tanner, Mike
      • Thompson, Nathan
      • Tidwell, Samantha "Sammi", Contractor
      • Tidwell, Taylor
      • Tillitt, Donald, PhD, Branch Chief
      • Tillitt, Robin
      • Towns-Campbell, Julia, Librarian
      • Tustison, Elizabeth, Student Services
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  • Rip S Shively (Supervisory Biologist)
    • Jo Ellen Hinck (Supervisory Research Fish Biologist)
    • Carl E Orazio, PhD (Supervisory Physical Scientist)
    • Tom Scott (Program Analyst)
    • Susan Finger (Volunteer)
    • Supervisory Research Ecologist
    • David Alvarez, PhD, Branch Chief (Supervisory Research Chemist)
    • Jeffery "Jeff" Steevens, PhD, Branch Chief (Supervisory Research Fish Biologist)
    • Robert Jacobson, PhD, Branch Chief (Supervisory Research Hydrologist)
    • Donald Tillitt, PhD, Branch Chief (Research Toxicologist)
      • Cathy Richter, PhD (Research Molecular Biologist)
      • Jim Zajicek, Volunteer (Retiree Volunteer)
      • Rachelle Riegerix, Volunteer (Student Volunteer)
      • Diana Papoulias, PhD, Volunteer (Retiree Volunteer)
      • Jason Berninger, PhD (Research Toxicologist)
      • Jennifer "Jenny" Brennan, PhD (Research Toxicologist)
      • Jessica Leet, PhD (Research Toxicologist)
      • Steven Smith, PhD, Contractor (Contractor)
      • James Candrl (Fish Biologist)
      • Rachel Claunch (Fish Biologist)
      • Diane Nicks (Biologist)
      • Vanessa Velez (Bio Sci Lab Tech (Fish))
      • Mariah Morrison, Student Services (Contractor )
      • Sarah Wascisin, Student Services (Contractor)
    • Jamie Quade (Administrative Officer)
    • Chris Henke, IT Branch Chief (Supervisory Info Tech Specialist)
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