Bernal, X. E., Page R. A., Ryan M. J., Argo IV T. F., Wilson P. S. 2008. Acoustic radiation patterns of mating calls of the túngara frog (Physalaemus pustulosus): Implications for multiple receivers. Second International Conference on Acoustic Communication by Animals, Corvallis, OR. USA.

Bernal, X.E. 2007. Frogs and Flies: Communication networks in action. Rice University, Houston, TX. USA

Bernal, X. E. 2007*. Love bites: Interaction between Corethrella blood-sucking flies and their anuran prey. 44th Annual Meeting of the Animal Behavior Society. Burlington, VT. USA.

*Honorable Mention, W. C. Allee Competition        *Science News

      Bernal, X. E, 2006. Frogs and Flies: Communication networks in action. Biological Science Seminar Series. Texas Tech University, Lubbock, TX. USA

      Bernal, X.E. 2005*. Potential species differences in acoustic preferences in Corethrella flies. 53er Meeting of the Entomological Society of America. Fort Lauderdale, FL. USA.

*Best student oral presentation, Ecology and Animal Behavior Section

     Bernal, X. E. 2005. Frogs and Flies: Sexual Selection and Parasitism. Neuroethology Club. Cornell University, Ithaca, NY. USA

     Bernal, X. E. 2004*. Acoustic preferences of blood-sucking flies (Corethrella spp). 52nd Annual Meeting of the Entomological Society of America. November 14-17. Salt Lake City, Utah.

                  *Best student oral presentation, Ecology and Animal Behavior Section

Bernal, X. 2004. Sexual differences in perception of signal variation in túngara frogs (Physalaemus pustulosus). Symposium Talk. Animal Behavior Society XLI Meeting. Oaxaca, Mexico.

Bernal, X. & Lüddecke, H. 2000. Variación geográfica de la llamada de advertencia de la rana Andina Colostethus palmatus. 1er Congreso Colombiano de Zoología. Mayo 8-12, 2000. Bogota, Colombia.

Bernal X., Guzmán F., Lüddecke H., Amézquita A. 1999. Efecto térmico diferencial en la vocalización de la rana bogotana (Eleutherodactylus bogotensis) en tres poblaciones de alta montaña. Vº Congreso Latinoamericano de Herpetología. Diciembre 11–17, 1999. Montevideo, Uruguay.

Bernal X., Mejía C. A. 1996. Uso del hábitat por un grupo de paujiles (Crax alector). Congreso de Ecología, Universidad Javeriana. Bogotá, Colombia.

Bernal X., Mejía C. A. 1996. Rango de hogar de un grupo de paujiles patirrusios en el Parque Nacional Natural Tinigua. Instituto de Ciencias Naturales, Universidad Nacional de Colombia. Bogotá, Colombia.