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Abstract:

Individual Camponotus fellah ants perceive and learn odours in a Y-maze in which one odour is paired with sugar (CS+) while a different odour (CS-) is paired with quinine (differential conditioning). We studied olfactory retention in C. fellah to determine whether olfactory learning leads to long-term memory retrievable 24h and 72 h after training. One and 3days after training, ants exhibited robust olfactory memory through a series of five successive retention tests in which they preferred the CS+ and stayed longer in the arm presenting it. In order to determine the nature of the associations memorized, we asked whether choices within the Y-maze were driven by excitatory memory based on choosing the CS+ and/or inhibitory memory based on avoiding the CS-. By confronting ants with a novel odour vs either the CS+ or the CS- we found that learning led to the formation of excitatory memory driving the choice of the CS+ but no inhibitory memory based on the CS- was apparent. Ants even preferred the CS- to the novel odour, thus suggesting that they used the CS- as a contextual cue in which the CS+ was embedded, or as a second-order cue predicting the CS+ and thus the sugar reward. Our results constitute the first controlled account of olfactory long-term memory in individual ants for which the nature of associations could be precisely characterized.

Registro:

Documento: Artículo
Título:Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants
Autor:Josens, R.; Eschbach, C.; Giurfa, M.
Filiación:Departamento de Biodiversidad y Biología Experimental, Grupo de Estudio de Insectos Sociales, Facultad de Ciencias Exactas y Naturales, Pab. II, 1428 Buenos Aires, Argentina
Université de Toulouse, UPS, Centre de Recherches sur la Cognition Animale, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France
CNRS, Centre de Recherches sur la Cognition Animale, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France
Department of Genetics and Neurobiology, Biocenter, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
Palabras clave:Ant; Camponotus fellah; Conditioning; Learning; Long-term memory; Olfaction; animal; ant; article; association; conditioned reflex; memory; odor; physiology; Animals; Ants; Conditioning, Classical; Cues; Memory; Smell; Camponotus fellah; Formicidae
Año:2009
Volumen:212
Número:12
Página de inicio:1904
Página de fin:1911
DOI: http://dx.doi.org/10.1242/jeb.030080
Título revista:Journal of Experimental Biology
Título revista abreviado:J. Exp. Biol.
ISSN:00220949
CODEN:JEBIA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00220949_v212_n12_p1904_Josens.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v212_n12_p1904_Josens

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Citas:

---------- APA ----------
Josens, R., Eschbach, C. & Giurfa, M. (2009) . Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants. Journal of Experimental Biology, 212(12), 1904-1911.
http://dx.doi.org/10.1242/jeb.030080
---------- CHICAGO ----------
Josens, R., Eschbach, C., Giurfa, M. "Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants" . Journal of Experimental Biology 212, no. 12 (2009) : 1904-1911.
http://dx.doi.org/10.1242/jeb.030080
---------- MLA ----------
Josens, R., Eschbach, C., Giurfa, M. "Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants" . Journal of Experimental Biology, vol. 212, no. 12, 2009, pp. 1904-1911.
http://dx.doi.org/10.1242/jeb.030080
---------- VANCOUVER ----------
Josens, R., Eschbach, C., Giurfa, M. Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants. J. Exp. Biol. 2009;212(12):1904-1911.
http://dx.doi.org/10.1242/jeb.030080