Link to article in Ahora Utah about Family School Partnership and the visit to Weber State.
http://www.ahorautah.com/
I research methods for delimiting species boundaries. I work mostly with Sceloporus grammicus, a lizard species found in Mexico, but I have also published papers on other lizard species, malaria mosquitoes, meadow jumping mice, and crickets. Along with species boundaries issues I do research in phylogentics, population genetics, and hybrid zones. I am always looking for good undergraduate researchers so if you are interested email me your CV. Abstracts of my research are posted below.

Dr. Marshall spent a week in Nuevo Leon and Tamaulipas, Mexico helping graduate student Beth Bastiaans (University of California, Santa Cruz) and Gen (undergraduate student UCSC) collecting live lizards in the field and bringing them back to the lab in Torreon. Above Gama (Professor at Universidad de Juarez del Estado de Durango), Beth, and Gen set up lizard chambers in preparation for mate selection and male aggression trial.



Fat body and liver mass cycles in S. grammicus (Squamata: Phrynosomatidae) from southern Hidalgo, Mexico
Abstract—We describe changes in liver and fat body mass of males and females of the viviparous lizard, Sceloporus grammicus from southeastern Hidalgo, México. The changes in the masses of the liver and fat bodies of males and females are usually asynchronous. Typically, reproductively active males and females deplete fat body reserves and experience increased liver mass. However, we observed maximum fat body and liver masses during spermatogenesis (July-August) and vitellogenesis (July-November). In females, the liver and fat body masses decreased while carrying developing embryos. This pattern demonstrates the ability of these lizards to bolster energy reserves during reproductive activity and the high energetic cost associated with embryo development. Also, this response pattern is similar to other populations of this species and to some other species of temperate lizards.
A RAMÍREZ-BAUTISTA,D HERNÁNDEZ-RAMOS, AR MARTINEZ, AND JC MARSHALL
Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Hidalgo, A.P. 1-69 Plaza Juárez, C.P. 42001, Pachuca, Hidalgo, México, Department of Zoology, Weber State University, Ogden, Utah 84408, USA
Herpetological Conservation and Biology 4(2):164-170