Effects of two bitter substances on olfactory conditioning in the moth Heliothis virescens
| Autor: | Randolf Menzel, Hanna Mustaparta, M. Stranden, Jean-Christophe Sandoz, Kari Jørgensen |
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| Přispěvatelé: | Neuroscience Unit, Department of Biology, Norwegian University of Science and Technology [Trondheim] (NTNU), Norwegian University of Science and Technology (NTNU)-Norwegian University of Science and Technology (NTNU)-Inconnu, Norwegian University of Science and Technology (NTNU)-Norwegian University of Science and Technology (NTNU), Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut des sciences du cerveau de Toulouse. (ISCT), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse - Jean Jaurès (UT2J)-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut für Biologie-Neurobiologie, Freie Universität Berlin |
| Rok vydání: | 2007 |
| Předmět: |
Sucrose
Physiology Moths Pharmacology Extinction Psychological chemistry.chemical_compound Discrimination Psychological 0302 clinical medicine Conditioning Psychological MESH: Smell MESH: Animals MESH: Discrimination (Psychology) MESH: Glucosinolates 0303 health sciences Quinine biology MESH: Moths MESH: Neurons Afferent 3. Good health Smell Sinigrin [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC] Olfactory Learning medicine.drug MESH: Quinine Glucosinolates MESH: Electric Conductivity Context (language use) Aquatic Science Olfactory conditioning 03 medical and health sciences Botany medicine Animals Neurons Afferent Molecular Biology Ecology Evolution Behavior and Systematics 030304 developmental biology Heliothis virescens MESH: Sucrose fungi Electric Conductivity Extinction (psychology) MESH: Conditioning (Psychology) MESH: Extinction Psychological biology.organism_classification chemistry Insect Science Animal Science and Zoology 030217 neurology & neurosurgery |
| Zdroj: | Journal of Experimental Biology Journal of Experimental Biology, The Company of Biologists, 2007, 210 (Pt 14), pp.2563-73. ⟨10.1242/jeb.004283⟩ |
| ISSN: | 1477-9145 0022-0949 |
| DOI: | 10.1242/jeb.004283 |
| Popis: | SUMMARY In nature, moths encounter nutritious and toxic substances in plants, and thus have to discriminate between a diversity of tastants. Whereas olfactory learning allowing memory of nutritious plants is well demonstrated, little is known about learning and memory of toxic items in adult lepidopterans. Moths may use bitter substances to detect and possibly learn to avoid noxious plants. We have studied the physiological and behavioural effects of two bitter substances, quinine and sinigrin, on the moth Heliothis virescens. Electrophysiological recordings showed responses to both compounds in gustatory receptor neurons on the antennae. The response patterns suggested a peripheral discrimination between quinine and sinigrin. We evaluated their putative aversive effect in an appetitive conditioning context where the moths learned to associate an odour with sucrose. We first aimed at enhancing olfactory conditioning of the proboscis extension response by testing the effect of the sucrose concentration on acquisition, retention and extinction. 2 mol l–1 and 3 mol l–1 sucrose concentration gave similar acquisition, retention and extinction performances. Experiments involving pre-exposure or facilitated extinction with an odour paired with quinine, sinigrin or no tastant showed a latent inhibitory effect,as well as an aversive effect of quinine and, to a lesser extent, of sinigrin. The results suggested that the two tastants may act as negative reinforcers in H. virescens. |
| Databáze: | OpenAIRE |
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