Demastes, James - University of Northern Iowa

个人简介

Education: Ph.D. 1996 Louisiana State University, Baton Rouge, LA., Department of Zoology and Physiology. Dissertation: "Analysis of cospeciation: The effects of spatial and temporal scale." M.S. 1990 Louisiana State University, Baton Rouge, LA., Department of Zoology and Physiology. Thesis: "Host-parasite coevolutionary relationships in two assemblages of pocket gophers and chewing lice." B.S. 1982 Secondary Science Education (biology major, chemistry minor), Auburn University, Auburn, AL.

研究领域

My research interests focus on host-parasite coevolution and zoogeography. My research in coevolution involves long-time collaborations with several researchers at other universities. We have been studying pocket gophers (Rodentia: Geomyidae) and their ectoparasitic chewing lice (Pthiraptera: Trichodectidae) for over 20 years. Our past, NSF-funded, work involved a gopher-louse assemblage distributed across much of Mexico (Spradling, et al., 2016). Dr. Theresa Spradling and I are currently working on a long-term study on the affects of range expansion on the population genetics of parasites along the Rio Grande. We have been studying this particular system since 1989 and are now applying modern techniques such as DNA fingerprinting to examine the genetic consequences of shifting species ranges. This is an especially important question given the rapid environmental change (and subsequent range shifts) that are being observed today. This research has also been funded by NSF and has involved several UNI students.

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:e0162248. (*UNI undergraduate student) 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. 97:405-423. (*UNI undergraduate student) Harper, S. E.**, T. A. Spradling, J. W. Demastes, and C. S. Calhoun*. Host behavior drives parasite genetics at multiple geographic scales: Population genetics of the chewing louse, Thomomydoecus minor. Molecular Ecology. 24:4129-4144. (*UNI undergraduate student, ** UNI M.S. student) Hafner, M. S., D. J. Hafner, E. E. Gonzales, 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. Mathis, V. L., M. S. Hafner, M. S., D. J. Hafner, and J. W. Demastes. Thomomys nayarensis, a new species of pocket gopher from the Sierra del Nayar, Nayarit, Mexico. Journal of Mammalogy. 94: 983-994. Mathis, V. L., M. S. Hafner, D. J. Hafner, and J. W. Demastes. Resurrection and Redescription of the pocket gopher Thomomys sheldoni from the Sierra Madre Occidental of Mexico. Journal of Mammalogy. 94: 544-560. Demastes, J. W., T. A. Spradling, M. S. Hafner, D. J. Hafner, J. E. Light, G. R. Spies*. Cophylogeny on a fine scale: Geomydoecus chewing lice and their Pocket Gopher Hosts (Pappogeomys bulleri). Journal of Parasitology, 98:262-270. (*UNI undergraduate student) Hafner, M.S., A. R. Gates, V.L. Mathis, J. W. Demastes and D. J. Hafner. Redescription of Thomomys atrovarius. Journal of Mammalogy. 92:1367-1382. Hafner, M.S. , D.J. Hafner, J.W. Demastes, T. A. Spradling, G. L. Hasty, and J. E. Light. Evolutionary Relationships of pocket gophers of the Genus Pappogeomys (Rodentia: Geomyidae). Journal of Mammalogy, 90:47-56.