Dr. Troy Nash

105 Lassiter Hall
(864) 833-8402 (p)
(864) 833-8993 (f)
B.S. Biology – Lander University, 1997
Ph.D. Zoology – Clemson University, 2002


Areas of Interest
Invertebrate Physiology
Marine Ecology

Courses Taught
General Biology I and II: Fall and Spring
Principles of Biology II: Spring
Invertebrate Zoology: Fall
Parasitology: Spring
Physiology: Fall
Flexi 2005: Natural History of the Florida Coastline – co-taught with Dr. Mike Rischbieter
Flexi 2006: Natural History of the Galapagos Islands and BellaVista Cloudforest, Ecuador – co-taught with Drs. Mike Rischbieter and Jim Wetzel
Flexi 2009: Natural History of the Ecuador – The Amazon, Galapagos Islands, and Andes Mountains – co-taught with Dr. Mike Rischbieter
Flexi 2012: Natural History of the Ecuadorian Amazon and the Galapagos Islands – co-taught with Dr. Mike Rischbieter

Click Here to See the Flexi 2005 Photo Galleries from Flexi 2009. 2006 and 2005

Publications and Presentations
Hammett, J.T., Petz, J.K., & Nash T.R. 2012. Prevalence of Toxoplasma gondii among Cats and Humans. Symposium for Young Neuroscientists and Professors of the Southeast. USC School of Medicine – Columbia, S.C.

Nash, T.R., Ruppert, E.E., & Colacino, J.M. 2009. The absorption efficiency and respiration rate of the Florida Lancelet, Branchiostoma floridae. Comp Biochem Phys, Part A. 154: 570-574.

Ruppert E.E. & Nash T.R. 2000. The size range of suspended particles trapped and ingested by the filter-feeding lancelet Branchiostoma floridae (Cephalochordata, Acrania). J Mar Biol Ass UK. 80: 329-332.

Nash T.R. & Fox R.S. 1997. Seasonal succession of planktonic Cladocera in Lake Greenwood, South Carolina. Bull S Carolina Acad Sci. 59:125.

Fox, R.S., Nash, T.R., Taylor, N., & Vahjen, M. 1997. The exotic zooplankter, Daphnia lumholtzi(Crustacea: Cladocera) in South Carolina reservoirs. Bull S Carolina Acad Sci. 59:94.

My research focuses primarily on the ecology and physiology of filter-feeding invertebrates. Using dyed and fluorescently-labeled microbeads, I attempt to elucidate the mechanism and efficiency of particle capture and trace the path of the particle through the digestive tract.

I am also interested in using cellulose acetate electrophoresis to analyze allozymes in an attempt to elucidate information about the evolution and genetic diversity of certain invertebrate populations.

Finally, I’ve recently become interested in using molecular techniques (PCR and/or ELISA) to determine the presence of parasitic helminthes and protists.

Student Research Projects (**denotes Honors Research)
Traver, J.L. & Nash T.R. 2012. Effects of Toxoplasma gondii Infection on Reaction Time While Driving.**

Hammett, J.T., Petz, J.K., & Nash T.R. 2011. Prevalence of Toxoplasma gondii Amongs Cats and Humans.

Hamilton, T.P. & Nash, T.R. 2011. Prevalence of Avian Schistosomes in SC Freshwater Reservoirs.**

Harris, M.T. & Nash, T.R. 2010. Enyzmatic Analysis of the Hepatic Cecum from the Florida Lancelet, Branchiostoma floridae.**

Twitty, S.E. & Nash, T.R. 2010. Molecular Detection of Parasitic Helminthes in South Carolina Soils.**

Ragan, A.L. & Nash, T.R. 2007. Particle Capture Ability of Freshwater Mussels.**

Friday, E.N. & Nash, T.R. 2006. Asexual Reproduction and Allozyme Analysis of the Brown Sea Anemone, Aiptasia pallida.**

Mills, R.A. & Nash, T.R. 2006. Nutrient Uptake in the Gastrovascular Cavity of the Brown Sea Anemone, Aiptasia pallida.**

Web Links
Links to interesting and helpful websites about invertebrates, parasites, and other cool stuff:

CDC – Division of Parasitic Diseases – a great site for info about parasites

Grice Marine Laboratory – excellent tips for collecting inverts in the Charleston area

Gulf Specimen – a supplier of information about and live specimens of marine inverts

Southeastern Regional Taxonomic Center – lots of great photos of SC marine inverts

Tree of Life – a wonderful phylogenetics resource