Spradling, Theresa - University of Northern Iowa

个人简介

Education: Ph.D. 1997 Louisiana State University, Baton Rouge, Department of Zoology and Physiology. Dissertation: "Relative rates of molecular evolution in rodents and their symbionts" M.S. 1991 University of North Texas, Denton. Thesis: "Mitochondrial DNA restriction site analysis of the phylogeny of the truei and boylii species groups of the rodent genus Peromyscus (Cricetidae)" B.S. 1988 Emporia State University, Emporia, KS. Major in biology, minor in chemistry.

研究领域

My research interests lie broadly in the area of evolution, including both organismal and molecular evolution. My research has focused on the systematics of a variety of rodents, as assessed using genetic techniques. In pocket gophers, I use genetic techniques to study evolutionary relationships, which can be compared to the evolutionary relationships of their parasites. In each case, I am interested in the interplay between organismal and molecular evolution. Population-level processes may play a role in the degree of cospeciation that will occur between hosts and their parasites (Demastes, Spradling, and Hafner, 2003). Also, some of my past research has indicated that population-level parameters and life history traits of organisms can contribute to rates of molecular evolution (Spradling, Hafner, and Demastes, 2001; Hafner et al., 1994). Therefore, I have become interested in what goes on at the population level in a variety of species. Accordingly, I have mentored Jon Eastman (M.S.), who investigated population genetics of blue-spotted salamanders, and Scott Whitmore (M.S.), who investigated the population genetics of the central newt in Iowa. My interests in host-parasite cospeciation and in population genetics have led me to study the population genetics of chewing lice in an effort to understand how population level parameters impact cospeciation of these parasites and their hosts. Sheree Harper (M.S.) has worked with me on one aspect of this system, comparing genetics of louse populations separated by 23 years of time (Harper et al. 2015). Now Jim Demastes and I are working with several undergraduate students on a National Science Foundation funded project aimed at understanding the genetics of chewing louse populations that are in the process of expanding their range and invading a new host type

近期论文

查看导师新发文章（温馨提示：请注意重名现象，建议点开原文通过作者单位确认）

Pietan, L. L., T. A. Spradling, and J. W. Demastes. The mitochondrial cytochrome oxidase subunit I gene occurs on a minichromosome with extensive heteroplasmy in two species of chewing lice, Geomydoecus aurei and Thomomydoecus minor. PloS One, 11(9): e0162248, September 2, 2016, doi. 10.1371/journal.pone.0162248. Spradling, T. A., J. W. Demastes, D. J. Hafner, P. L. Milbach*, F. A. Cervantes, and M. S. Hafner. Systematic revision of the pocket gopher genus Orthogeomys. Journal of Mammalogy, 97(2); 405-423, http://dx.doi.org/10.1093/jmammal/gyv185. Harper, S. E.*, T. A. Spradling, J. W. Demastes, and C. S. Calhoun*. Host behaviour drives parasite genetics at multiple geographic scales: population genetics of the chewing louse, Thomomydoecus minor. Molecular Ecology, 16 pp., doi: 10.1111/mec.13306. Hafner, M. S., D. J. Hafner, E. E. Gonzáles, J. W. Demastes, T. A. Spradling, and F. A. Cervantes. Rediscovery of the pocket gopher Orthogeomys lanius (Rodentia: Geomyidae) in Veracruz, Mexico. Journal of Mammalogy, 95:792-802. Whitmore, S. S., S. Losee, L. Meyer, and T. A. Spradling. Conservation genetics of the central newt (Notophthalmus viridescens) in Iowa: The importance of a biogeographic framework. Conservation Genetics, 14:771-781. Demastes J. W., T. A. Spradling, M. S. Hafner, G. R. Spies*, D. J. Hafner, and J. E. Light. Cophylogeny on a fine scale: Geomydoecus chewing lice and their pocket gopher hosts, Pappogeomys bulleri. Journal of Parasitology, 98:262-270. Spradling, T. A., J. W. Tamplin, S. S. Dow*, and K. J. Meyer*. Conservation genetics of a peripherally isolated population of the wood turtle (Glyptemys insculpta) in Iowa. Conservation Genetics, 11:1667-1677, 10.1007/s10592-010-0059-y. Hafner, M. S., D. J. Hafner, J. W. Demastes, G. L. Hasty, J. E. Light, and T. A. Spradling. Evolutionary relationships of pocket gophers of the genus Pappogeomys (Rodentia: Geomyidae). Journal of Mammalogy, 90:47-56. Hafner, D. J., M. S. Hafner, G. L. Hasty, T. A. Spradling, and J. W. Demastes. Evolutionary relationships of pocket gophers (Cratogeomys castanops species group) of the Mexican Altiplano. Journal of Mammalogy, 89:190-208.