Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants
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-te...
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2009
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v212_n12_p1904_Josens http://hdl.handle.net/20.500.12110/paper_00220949_v212_n12_p1904_Josens |
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paper:paper_00220949_v212_n12_p1904_Josens2023-06-08T14:45:34Z Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants Josens, Roxana Beatriz Giurfa, Martín 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 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. Fil:Josens, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Giurfa, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v212_n12_p1904_Josens http://hdl.handle.net/20.500.12110/paper_00220949_v212_n12_p1904_Josens |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Josens, Roxana Beatriz Giurfa, Martín Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants |
| topic_facet |
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 |
| description |
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. |
| author |
Josens, Roxana Beatriz Giurfa, Martín |
| author_facet |
Josens, Roxana Beatriz Giurfa, Martín |
| author_sort |
Josens, Roxana Beatriz |
| title |
Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants |
| title_short |
Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants |
| title_full |
Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants |
| title_fullStr |
Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants |
| title_full_unstemmed |
Differential conditioning and long-term olfactory memory in individual Camponotus fellah ants |
| title_sort |
differential conditioning and long-term olfactory memory in individual camponotus fellah ants |
| publishDate |
2009 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v212_n12_p1904_Josens http://hdl.handle.net/20.500.12110/paper_00220949_v212_n12_p1904_Josens |
| work_keys_str_mv |
AT josensroxanabeatriz differentialconditioningandlongtermolfactorymemoryinindividualcamponotusfellahants AT giurfamartin differentialconditioningandlongtermolfactorymemoryinindividualcamponotusfellahants |
| _version_ |
1768545724549562368 |