James Bradley Johnson
Ph.D. Candidate

James Bradley Johnson

Department of Biology
Texas A&M University 

3258 TAMU
College Station, TX 77843 

Tel: 979.845.3614 

email: jamesbjohnson AT 

Curriculum Vitae (updated August 2010)

James Bradley Johnson

Our lab's research seeks to understand the diversity of systems that animals use to communicate with one another, both at the level of proximate mechanisms and in an evolutionary sense, and to understand the role communication plays in shaping basic ecological and evolutionary processes. Our primary focus is on visual and chemical communication in teleost fishes, although students have worked on a wide variety of topics. Integrative research is necessarily collaborative, and much of our research involves work with other labs with complementary areas of specialization. Current research focuses on mate choice and evolutionary genetics in hybrid zones, gene expression across hybrid gradients, mechanisms of chemical signaling, and visual ecology of reef fishes. Much of our work involves playback of synthetic computer animations. 


  1. J.B. Johnson, Z.W. Culumber and G.G. Rosenthal , 2015. Boldness and predator evasion in naturally hybridizing swordtails (Teleostei: Xiphophorus). Curr. Zool. 61: 596-603. [PDF]
  2. J.B. Johnson, Z.W. Culumber and G.G. Rosenthal., In preparation. Boldness and anti-predator behavior in naturally hybridizing swordtail fish.
  3. J.B. Johnson, D. B. Burt, and T. J. DeWitt, 2008. Morphology, performance and fitness- Pathways to survival. Evolution 62:1243-1251.
  4. J.B. Johnson, L. D. McBrayer and D. Saenz, 2005. Allometry, sexual size dimorphism and niche portioning in the Mediterranean gecko (Hemidactylus turcicus). The Southwestern Naturalist 50:435-439.
  5. J.B. Johnson, D. Saenz, C. K. Adams, and R. N. Conner, 2003. The influence of predator threat on the timing of a life history switch point: predator-induced hatching in the southern leopard frog (Rana sphenocephala). Canadian Journal of Zoology 81:1608-1613.
  6. Saenz D., J.B. Johnson, C. K. Adams, and G. H. Dayton, 2003. Accelerated hatching response of Rana Sphenocephala eggs to the presence of a crayfish predator. Copeia 3:646-649.
  7. J.B. Johnson, D. Saenz, D. B. Burt, and R. N. Conner, 2002. An Automated Technique for Monitoring Nocturnal Avian Vocalizations. Bulletin of the Texas Ornithological Society 35(2): 8-13.