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Publications at Indiana University

Petzold, J.M., Alves-Gomes, J.A., and Smith, G.T. 2018. Chirping and an asymmetric jamming avoidance response in the electric fish Distocyclus conirostris. J. Exp. Biol. 22:jeb1789131. doi: 10.1242/jeb.178913

Thompson, A., Infield, D.T., Smith, A.R., Smith, G.T., Ahern, C.A., and Zakon, H.H. 2018. Rapid evolution of a voltage-gated sodium channel gene in a lineage of electric fish leads to a persistent sodium current. PLOS Biology 204:93-112. doi: 10.1371/journal.pbio.2004892

Smith, G.T., Proffitt, M.R., Smith, A.R., and Rusch, D.B. 2018. Genes linked to species diversity in a sexually dimorphic communication signal in electric fish. J. Comp. Physiol. A 204:93-112. doi: 10.1007/s00359-017-1223-3

Petzold, J.M., Marsat, G. and Smith, G.T. 2016. Co-adaptation of electric organ discharges and chirps in South American ghost knifefishes (Apteronotidae) J. Physiology - Paris 110:200-215. doi: 10.1016/j.jphysparis.2016.10.005

Smith, A.R., Proffitt, M.R., Ho, W.W., Mullaney, C.B., Maldonado-Ocampo, J.A., Lovejoy, N.R. Alves-Gomes, J.A. and Smith, G.T. 2016. Evolution of electric communication signals in the South American ghost knifefishes (Gymnotiformes: Apteronotidae): A phylogenetic comparative study using a sequence-based phylogeny. J. Physiology - Paris 110:302-313. doi: 10.1016/j.jphysparis.2016.10.002

Petzold, J.M. and Smith, G.T. 2016. Androgens regulate sex differences in signaling but are not associated with male variation in morphology in the weakly electric fish Parapteronotus hasemani. Horm. Behav. 78:67-71. doi: 10.1016/j.yhbeh.2015.10.014

Ho, W.W., Turner, C.R., and Smith, G.T. 2013. Sex differences in the electrocommunication signals of Sternarchogiton nattereri (Gymnotiformes: Apteronotidae). J. Ethology 31:335-340. doi: 10.1007/s10164-013-0382-0

Ho, W.W., Turner, C.R., and Smith, G.T. 2013. Transition across polymorphic phenotypes in a male Sternarchogiton nattereri (Gymnotiformes: Apteronotidae). J. Fish Biol. 83:667-670. doi:10.1111/jfb.12188

Ho, W.W., Rack, J.M., and Smith, G.T. 2013. Divergence in androgen sensitivity contributes to population differences in sexual dimorphism of electrocommunication behavior. Hormones and Behavior. 63(1):49-53. doi:10.1016/j.yhbeh.2012.11.002

Allen, A.R. and Smith, G.T. 2012. Spinal transection induces widespread proliferation of cells along the length of the spinal cord in a weakly electric fish. Brain, Behavior, and Evolution. 80(4):269-80. doi:10.1159/000342485

Ho, W.W., Cox Fernandes, C., Alves-Gomes, J., and Smith, G.T. 2010. Sex differences in the electrocommunication signals of the electric fish Apteronotus bonapartii. Ethology. 116:1050-1064. doi:10.1111%2Fj.1439-0310.2010.01823.x

Cox Fernandes, C., Smith, G.T., Podos, J., Nogueira, A., Inoue, L., Akama, A., Ho, W.W., and Alves-Gomes, J. 2010. Hormonal and behavioral correlates of morphological variation in an Amazonian electric fish (Sternarchogiton nattereri: Apteronotidae). Hormones and Behavior 58:660-668. doi:10.1016/j.yhbeh.2010.06.006

Smith G.T. 2010. Communication and Hormones. In: Breed M.D. and Moore J.,(eds.) Encyclopedia of Animal Behavior, volume 1, pp. 317-328 Oxford: Academic Press. doi:10.1016/B978-0-08-045337-8.00246-1

Zakon, H.H. and Smith, G.T. 2009. Weakly electric fish: behavior, neurobiology, and neuroendocrinology. In: Hormones, Brain, and Behavior, 2nd Edition (eds. Pfaff, D., Arnold, A., Etgen, A., Fahrbach, S., Moss, R., and Rubin, R.) New York: Academic Press. pp. 611-638. doi:10.1016/B978-008088783-8.00017-6

Smith, G.T. and Combs, N. 2008. Serotonergic activation of 5HT1A and 5HT2 receptors modulates sexually dimorphic communication signals in the weakly electric fish Apteronotus leptorhynchus. Hormones and Behavior 54:69-82. doi:10.1016/j.yhbeh.2008.01.009

Turner, C.R., Derylo, M., de Santana, C.D., Alves-Gomes, J.A., and Smith, G.T. 2007. Phylogenetic comparative analysis of electric communication signals in ghost knifefishes (Gymnotiformes: Apteronotidae). Journal of Experimental Biology 210:4104-4122. doi:10.1242/jeb.007930

Kolodziejski, J.A., Sanford, S., and Smith, G.T. 2007. Stimulus frequency differentially affects chirping in two species of weakly electric fish: implications for the evolution of signal structure and function. Journal of Experimental Biology 210:2501-2510. doi:10.1242/jeb.005272

Telgkamp, P., Combs, N., and Smith, G.T. 2007. Serotonin in a diencephalic nucleus controlling communication in an electric fish: Sexual dimorphism and relationship to indicators of dominance. Developmental Neurobiology 67:339-354. doi:10.1002/dneu.20356

Zhou, M. and Smith, G.T. 2006. Structure and sexual dimorphism of the electrocommunication signals of the weakly electric fish Adontosternarchus devenanzii. Journal of Experimental Biology 209:4809-4818. doi:10.1242/jeb.02579

Smith, G.T., Unguez, G.A., and Weber, C. 2006. Distribution of Kv1-like potassium channels in the electromotor and electrosensory systems of a weakly electric fish. Journal of Neurobiology 66:1011-1031. doi:10.1002/neu.20283

Smith, G.T. 2006. Pharmacological characterization of ionic currents that regulate high-frequency spontaneous activity of electromotor neurons in the weakly electric fish Apteronotus leptorhynchus. Journal of Neurobiology 66:1-18. doi:10.1002/neu.20202

Kolodziejski, J.A., Nelson, B.S., and Smith, G.T. 2005. Sex and species differences in neuromodulatory input to a premotor nucleus: a comparative study of substance P and communication behavior in weakly electric fish. Journal of Neurobiology 62:299-315. doi:10.1002/neu.20095

Smith, G.T., Allen, A.R., Gammie, S.C., and Oestreich, J. 2005. L-citrulline immunoreactivity reveals nitric oxide production in the electromotor and electrosensory systems of the weakly electric fish, Apteronotus leptorhynchus. Brain Behavior and Evolution 65:1-13. doi:10.1159/000081106

Zakon, H. H. and Smith, G. T. 2002. Weakly electric fish: behavior, neurobiology, and neuroendocrinology. In: Hormones, Brain, and Behavior (eds. Pfaff, D., Arnold, A., Etgen, A., Fahrbach, S., Moss, R., and Rubin, R.) New York: Academic Press. vol. 2, pp. 349-374.

Smith, G. T., Unguez, G. A., and Reinauer, R. R., Jr. 2001. NADPH-diaphorase activity and nitric oxide synthase-like immunoreactivity colocalize in the electromotor system of four species of gymnotiform fish. Brain Behavior and Evolution 58: 122-135. doi:10.1159/000047267

Publications at University of Texas

Lee, D.W., Smith, G.T., Tramontin, A.D., Soma, K.K., Brenowitz, E.A., and Clayton, N.S. 2001. Hippocampal volume does not change seasonally in a non-food-storing bird. Neuroreport 12: 1925-1928. Full Text

Dunlap, K.D., Smith, G.T., and Yekta, A. 2000. Temperature dependence of electrocommunication signals and their underlying neural rhythms in the weakly electric fish, Apteronotus leptorhynchus. Brain Behavior and Evolution 55: 152-162. doi:10.1159/000006649

Smith, G.T., Lu, Y., and Zakon, H.H. 2000. Parvocells: A novel interneuron type in the pacemaker nucleus of a weakly electric fish. Journal of Comparative Neurology 423: 427-439. doi:10.1002/1096-9861(20000731)423:3<427::AID-CNE6>3.0.CO;2-S

Smith, G.T. and Zakon, H.H. 2000. Pharmacological characterization of ionic currents that regulate the firing frequency of the medullary pacemaker nucleus neurons in a weakly electric fish. Journal of Neurobiology 42: 270-286. doi:10.1002/(SICI)1097-4695(20000205)42:2<270::AID-NEU10>3.0.CO;2-V

Zakon, H., McAnelly, L., Smith, G. T., Dunlap, K., Lopreato, G., Oestreich, J., and Few, W. P. 1999. Plasticity of the electric organ discharge: Implications for the regulations of ionic currents. Journal of Experimental Biology 202: 1409-1416. Full Text