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Welcome to the Department of Biology at Texas State University - San Marcos. The Biology Department is a large, multidisciplinary department with many strong research programs that are well funded. We serve about 10,000 students each year in modern facilities with up to date instrumentation emphasizing inquiry-based hands-on instruction. This year Biology has about 1,000 undergraduate majors and 130 graduate (masters and Ph.D.) students.

Our goal is to attain national and international prominence through integrating undergraduate and graduate education with multidisciplinary research programs. Through our educational, scholarship, and outreach activities, the department will enhance the image of Texas State by using the life sciences to help meet the current and future needs of society in Texas, the United States, and the world.

601 University Dr,
San Marcos TX 78666
(512) 245-2178 (Main)
(512) 245-8713 (Fax)


  • Laura Alberici da Barbiano, a Biology doctoral student, and Michelle Downey, a Biology MS student were both awarded $1000 from SWAN's Howard McCarley's Student Research Award. Laura's research focuses on the origin of Unisexual Amazon mollies, Poecilia formosa and Michelle conducts research on Juniper Hairstreak butterflies and is investigating how local host adaptation limits gene flow among populations and contributes to differentiation and speciation.
  • The 13th annual Biology Colloquium was held on Friday, March 28. There were 29 oral presentations given at the colloquium by Department of Biology undergraduate and graduate students. The following students received awards for their presentations: Jesse Becker (Best graduate student presentation), Tina Gonzales (Runner-up graduate student presentation), Cameron Collier (Best undergraduate student presentation), and John Duvall-Jisha (Runner-up undergraduate student presentation). To read the abstracts of all the outstanding student presentations, please click here.
  • Based on member participation and volunteer actions in environmental and wildlife activities, the Texas State Student Chapter of the Wildlife Society was presented the Texas Wildlife Association Professional Development Award and a $2000 cash prize at the annual meeting of the Texas Chapter of The Wildlife Society, 14 - 16 February 2008. For more info, please read here.
  • Dr. John Baccus, Professor of Biology and Chair of the Wildlife Ecology Program was recipient of the Texas Chapter of the Wildlife Society’s Outstanding Scientific Publication Award for his 2007 publication, Baccus, John T., Maria E. Tolle, John D Cornelius 2007. Response of the Golden-cheeked Warblers (Dendroica Chrsoparia) to Wildfires at Fort Hood, Texas. Texas Ornithological Society Occasional Publication No. 7. 37 pp



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