John Hranitz, professor

John Hranitz, professor

John Hranitz


Ph.D. Mississippi State University, Biology


Human Biology; Biology of Aging; Anatomy and Physiology of the Head, Neck and Thorax; Vertebrate Zoology; Senior Seminar in Biology

Research Interests

My research expertise is in the ecological genetics and physiological ecology of animals. I study amphibians and reptiles and bees, but I also collaborate to study other taxa, providing expertise in ecological genetics or physiological ecology. I apply numerous techniques (allozyme genetics, microsatellite DNA genotyping, mtDNA sequencing, western blotting, ELISA, and skeletochronology) to study heterozygosity-fitness relationships, population genetic structure, and the abundance, distribution, and the physiological ecology of animals. Currently, my research is focused on studying island dwarfism and coastal ecology of amphibians and pollination systems.


  • Gonzalez VH, KE Park, I Cakmak, JM Hranitz, JF Barthell. 2016. Pan traps and bee body size in unmanaged urban habitats. Journal of Hymenoptera Research 51:241-247.

Presentations at the Society for Integrative and Comparative Biology, Portland OR (3-7 Jan 2016)

  • Klempay BL, Lim I, Mallula ML, Olsen AM, Park KE, Silva DH, Gonzalez VH, Hranitz JM, Petanidou T, Barthell JF. 2016. The effect of introducing differing color floral morphs on bee visitation in a native population of Vitex agnus-castus on the Greek island of Lesvos. Integrative and Comparative Biology 56:E316.
  • Olsen AM, Mallula ML, Tosunoglu A, Cakmak I, Hranitz J, Barthell J, Gonzalez V. 2016. Bee visitation patterns of Centaurea solstitialis L. (Asteraceae) in an urban environment in northwestern Turkey. Integrative and Comparative Biology 56:E344.
  • Park KE, Cakmak I, Hranitz J, Barthell J, Gonzalez VH. 2016. Avoidance by bees and flies to fieldrealistic concentrations of four types of pesticides. Integrative and Comparative Biology 56:E347.
  • Silva DH, Cakmak I, Hranitz JM, Barthell JF, Gonzalez VH. 2016. Pollinator composition in three types of unmanaged urban habitats. Integrative and Comparative Biology 56:E370.


  • 2016-2020. NSF-International REU Grant: Synergistic Studies of Honey Bees in the Republic of Turkey. John F. Barthell (PI), Charles Abramson (Co-PI), Victor H. Gonzalez (Senior Personnel), John M. Hranitz (Senior Personnel). Funded ($396,640)
  • 2013-2016. NSF-International REU Grant: Integrative Biological Studies of Honey Bees in the Republic of Turkey. John F. Barthell (PI), Charles Abramson (Co-PI), Harrington Wells (Senior Personnel), John M. Hranitz (Senior Personnel). Funded ($230,310).

Service Activies

  • Director, Office of Research and Sponsored Programs and the Center for Undergraduate Research
  • MS Thesis Advisor to Alan Belles, Jonathan Bobek, Bradley Ohlinger