Dr. Ryan R. Otter

Associate Professor

Dr. Ryan R. Otter
615-898-2063
Room 2024, Science Building (SCI)
MTSU Box 60, Murfreesboro, TN 37132

Degree Information

  • Ph.D., Clemson University, SC (2006)
  • M.S., Michigan State University (2002)
  • B.S., Michigan State University (2001)

Areas of Expertise

Aquatic Ecotoxicology
Designing studies to determine remedy effectiveness at contaminated sediment sites
Trophic transfer of contaminants (e.g., Hg, PCBs)
Use of tetragnathid spiders as bioindicators

Biography

In general, my interests focus on the toxicological effects of either biotic and abiotic stressors at multiple levels of biological organization. Recent projects include the effects of nano-sized metals on bacterial survival and zebrafish development. This project focuses on the morphological and genetic level impact these materials illicit on different organisms. Another major project is looking at the short-term and long-term effects of coal ash on freshwater mussels. This combination field...

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In general, my interests focus on the toxicological effects of either biotic and abiotic stressors at multiple levels of biological organization. Recent projects include the effects of nano-sized metals on bacterial survival and zebrafish development. This project focuses on the morphological and genetic level impact these materials illicit on different organisms. Another major project is looking at the short-term and long-term effects of coal ash on freshwater mussels. This combination field-lab study focuses on the biochemical and molecular level responses of exposed animals and attempts to correlate their responses to the overall health of an individual and population.

 

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Publications

  • Otter R.R., Hills A., Sims D.M., Lanier S., Hubbs D., McKinney D. 2016. Inherent variability in the freshwater mussel Fusconaia ebena: A reference site meta-analysis. Environmental Monitoring and Assessment. IN REVIEW
  • Stallard M.A., Otter R.R., Winesett S., Barbero M., Bruce M., Layton A., Bailey F.C. 2016. Meta-analysis of seasonal concentrations- and -flow-based results for Escherichia coli, and indicator of fecal bacteria exposure in inland waters. Bulletin of Environmenta...
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  • Otter R.R., Hills A., Sims D.M., Lanier S., Hubbs D., McKinney D. 2016. Inherent variability in the freshwater mussel Fusconaia ebena: A reference site meta-analysis. Environmental Monitoring and Assessment. IN REVIEW
  • Stallard M.A., Otter R.R., Winesett S., Barbero M., Bruce M., Layton A., Bailey F.C. 2016. Meta-analysis of seasonal concentrations- and -flow-based results for Escherichia coli, and indicator of fecal bacteria exposure in inland waters. Bulletin of Environmental Contamination and Toxicology. IN REVIEW 
  • Otter R.R., Bachner B., Weatherly J., Gilson S., Brown H., DiVincenzo J.P. 2015. Fly ash amended pervious concrete: A laboratory study on removal potential for inorganic contaminants. International Journal of Environmental Engineering. IN PRESS
  • Cusaac P.J., Plant V.K., Wright R., Henry C., Otter R.R., Bailey F.C. 2015. Effects of maternally-transferred methylmercury on stress physiology in noorthern water snake (Nerodia sipedon) neonates. Bulletin of Environmental Contamination and Toxicology. DOI: 10.1007/s00128-016-1757-z
  • Otter R.R., McKinney D., Brown B., Lainer S., Monroe W., Hubbs D., Read B. 2015. Bioaccumulations of metals in three freshwater mussels species exposed in situ during and after dredging at a coal ash spill site (Tennessee Valley Authority – Kingston Fossil Plant. Environmental Monitoring and Assessment. DOI: 10.1007/s10661-015-4578-3
  • Beasley A., Brill J.B., Belanger S.E., Otter R.R. 2015. Evaluation and comparison of the relationship between NOEC and EC10/EC20 values in chronic Daphnia toxicity testing. Environmental Toxicology and Chemistry 34(10):2378-2384
  • Beasley A., Belanger S.E., Otter R.R. 2015. Stepwise Information-Filtering Tool (SIFT): A method for using risk assessment data in a novel way. Environmental Toxicology and Chemistry 34(6):1436-1442
  • Beasley A., Graham C., Otter R.R., Elrod-Erickson M. 2014. A molecular method for assessing the effects of potential contaminants on the rate of zebrafish (Danio rerio) development. Environmental Toxicology and Chemistry 33(1):238-242
  • Otter R.R., Seipel S., Graeff T., Alexander B., Boraiko C., Gray J., Petersen K., Sadler K. 2013. Comparing student and faculty perceptions of online and traditional courses. Internet and Higher Education 19:27-35
  • Otter R. R., Hayden M., Mathews T., Fortner A., Bailey F.C. 2013. The use of tetragnathis spiders as bioindicators of metal exposure at a coal ash spill site. Environmental Toxicology and Chemistry 32(9):2065-2068
  • Keasling A.W., Otter R.R., Bailey F.C. 2013. Phytotoxicity of Passiflora incarnate extracts on germination and growth of Hordeum vulgare and Raphanus sativus. Allelopathy Journal 31(2):319-332.
  • Otter R. R., Schreiber E.A., van den Hurk P., Klaine S.J. 2012. Assessment of heavy metal and PAH exposure in largemouth bass (Micropterus salmoides) in the Reedy River watershed, South Carolina, USA: A multi-season assessment of metallothionein and bile fluorescence. Environmental Toxicology and Chemistry 31(12):2763-2770.
  • Otter R.R., Bailey F.C., Fortner A.M., Adams S.M. 2012. Trophic structure and metal bioaccumulation differences in multiple fish species exposed to coal ash-associated metals. Ecotoxicology and Environmental Safety 85:30-36.
  • Beasley A., Elrod-Erickson M., Otter R.R., 2012. Consistency of morphological endpoints used to access developmental timing in zebrafish (Danio rerio) across a temperature gradient. Reproductive Toxicology 34:561-567.
  • Otter R.R., Meier J., Kubach K.M., Lazorchak J.M., Klaine S.J. 2012. The effects of urbanization on Lepomis macrochirus using the comet assay. Ecotoxicology and Environmental Safety 84:299-303.
  • Bowman C., Bailey F.C., Elrod-Erickson M., Neigh A., Otter R.R. 2012. The effects of silver nanoparticles on zebrafish (Danio rerio) and Escherichia coli (ATCC 25922): A comparison of toxicity based on total surface area versus mass concentration of particles in a model eukaryotic and prokaryotic system. Environmental Toxicology and Chemistry 31(12):1-8.
  • Drevnick P.E., Otter R.R., Gorski P.R., Long D.T., Canfield D.E., Oris, J.T. 2009. Lake-specific responses in sedimentary sulfur after copper sulfate additions to Michigan lakes. Lake and Reservoirs: Research and Management. 14:193-201
  • Walters D.M., Fritz K.M., Otter R.R. 2008. The dark side of subsidies: quantifying contaminant exposure to riparian predators via stream insects. Ecological Applications 18(8):1835-1841.
  • Drevnick P.E., Roberts A.P., Otter R.R., Hammerschmidt C.R., Klaper R., Oris J.T. 2008. Mercury toxicity in liver of northern pike from Isle Royale National Park. Comparative Biochemistry and Physiology Part C: Toxicology and Pharmacology 147:331-338.
  • Drevnick P.E., Canfield D.E., Gorski P.R., Shinneman A.L.C., Engstrom D.R., Muir D.C.G., Smith G.R., Garrison P.J., Cleckner L.B., Hurley J.P., Noble R.B., Otter R.R., Oris J.T. 2007.
  • Deposition and cycling of sulfur controls mercury accumulation in Isle Royale fish Environmental Science & Technology 41:7266-7272.
  • Schreiber E.A., Otter R.R. and van den Hurk P. 2006. A biomarker approach to measure biological effects of contaminant exposure in largemouth bass from Lake Conestee, SC, USA. Environmental Toxicology and Chemistry 25:1926-1932.

Book Chapters

  • Roberts A.P., Otter R.R. “Ecological toxicology of engineered carbon nanoparticles” in Carbon Nanoparticles. Ed. Geckeler K.E., Nishide H. Wiley-VCH. 2010. 595-610.

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