Ryan, M.J., Bernal, X.E. & Rand, A.S. 20xx. Female mate choice and the potential for ornament evolution in túngara frogs, Physalaemus pustulosus. Current Zoology (In review)

Bernal, X.E., Page, R.A., Ryan, M.J., Argo IV, T.F. & Wilson, P.S. 2009. Acoustic radiation patterns of mating calls of the túngara frog (Physalaemus pustulosus):  Implications for multiple receivers. J Acous Soc Am 126: 2757-2767.

Bernal, X.E., Akre, K.L., Baugh, A.T., Rand, A.S. & Ryan, M.J. 2009. Female and male behavioral response to advertisement calls of variable complexity in túngara frogs, Physalaemus pustulosus. Behav Ecol Sociobiol 63:1269-1279.

Bernal, X.E., Rand, A.S. & Ryan, M.J. 2009. Task differences underlie sexual dimorphism in behavior. Proc Roy Soc London B 276:1323-1329.

Cummings, M.E., Bernal, X.E., Reynaga, R., Rand, A.S. & Ryan M.J. 2008. Visual Sensitivity to a Conspicuous Male Cue Varies by Reproductive State in Physalaemus pustulosus females. J Exp Biol 211:1203-1210.  

Ryan, M.J., Bernal, X.E., & Rand, A.S. 2007. Patterns of mating call preferences in túngara frogs, Physalaemus pustulosus. J Evol Biol 20:2235-2247.

Bernal, X.E., Rand, A.S. & Ryan, M.J. 2007. Sexual differences in the behavioral response of túngara frogs, Physalaemus pustulosus, to cues associated with increased predation risk. Ethology 113:755-763.

Lampert, K.P., Bernal, X.E., Rand, A.S., Mueller, U.G. & Ryan, M.J. 2007. Island populations of Physalaemus pustulosus: history influences genetic diversity and morphology. Herpetologica 63(3):311-320.

Bernal, X.E, Rand, A.S. & Ryan, M.J. 2007. Sexual differences in receiver permissiveness to advertisement calls in túngara frogs, Physalaemus pustulosus. Anim Behav 73:955-964.

Bernal, X.E., Page, R.A., Rand, A.S & Ryan, M.J. 2007. Cues for eavesdroppers: Do frog calls indicate prey density and quality? Am Nat 169: 412-415. 

                            Science Daily                     ScienceShots

Page, R.A & Bernal, X.E. 2006. Quick guide Túngara frogs. Current Biology 16(23): R979-R780.

Bernal, X.E., Rand, A.S. & Ryan, M.J. 2006. Acoustic preferences and localization performance of blood-sucking flies (Corethrella Coquillett). Behav Ecol 17:709-715.   

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Pauly, G.B., Bernal, X.E., Ryan, M.J. & Rand, A.S. 2006. The role of the vocal sac in increasing call rate in Physalaemus pustulosus. Physiol Biochem Zool 79:708-719.  

Lampert, K.P., Bernal, X.E., Rand A.S., Mueller, U.G. & Ryan, M.J. 2006. No evidence for female mate choice based on genetic similarity in the túngara frog, Physalaemus pustulosus. Behav Ecol Soc 59:796-804.

Bernal, X.E, Guarnizo, C. & Luddecke, H. 2005. Geographic variation in the advertisement call and genetic structure of the Andean frog Colostethus palmatus. Herpetologica 61(4): 395-408.

Lüddecke, H., Amézquita, A., Bernal, X. & Guzmán, F. 2000. Partitioning of vocal activity in a neotropical highland-frog community. Stud Neotrop Fauna & Environm 35: 185-194.

Bernal X., Guzmán F. 1999. The advertisement calls of three Eleutherodactylus species (Anura: Leptodactylidae) in a Colombian highland community. Rev Acad Colomb Cien 23 (Suplemento especial): 261-264.

Lüddecke, H., Amézquita, A., Guzmán, F., Bernal, X. & Agudelo, L. 1998. Comparison of environmental conditions and their effects on call characteristics of five frog species in a Colombian highland community. In: Miaud, C. & Guyétant, R. (eds). Le Bourget du Lac, SEH 1998: 285-294.

Newsletters: 

Bernal, X.E. 2006. Caiman crocodilus (Spectacle caiman). Predation / Eavesdropper. Natural History Notes Herp Review 37(4): 460-461.   

Pauly, G.B., Bernal, X. E. & Taylor, R. 2005. Scinax ruber (Red Snouted Treefrog). Arboreality and parachuting. Natural History Notes Herp Review 36(3): 308-309.

Bernal, X. & Ron, S. 2004. Leptodactylus fragilis (South American white-lipped frog). Courtship. Natural History Notes Herp Review 35(4): 372-373.

Books: 

Ryan, M.J., Bernal, X.E., & Page, R.A. In Press. Eavesdroppers and signal evolution. In: Animal Behavior 21.1:  Research Approaches in the USA during the Early Twenty First Century. ed., G.R. Bourne. [Currently in negotiation with publisher]