ERIC Number: EJ1172031
Record Type: Journal
Publication Date: 2018-Mar
Abstractor: As Provided
Place Learning Overrides Innate Behaviors in "Drosophila"
Baggett, Vincent; Mishra, Aditi; Kehrer, Abigail L.; Robinson, Abbey O.; Shaw, Paul; Zars, Troy
Learning & Memory, v25 n3 p122-128 Mar 2018
Animals in a natural environment confront many sensory cues. Some of these cues bias behavioral decisions independent of experience, and action selection can reveal a stimulus-response (S-R) connection. However, in a changing environment it would be a benefit for an animal to update behavioral action selection based on experience, and learning might modify even strong S-R relationships. How animals use learning to modify S-R relationships is a largely open question. Three sensory stimuli, air, light, and gravity sources were presented to individual "Drosophila melanogaster" in both naïve and place conditioning situations. Flies were tested for a potential modification of the S-R relationships of anemotaxis, phototaxis, and negative gravitaxis by a contingency that associated place with high temperature. With two stimuli, significant S-R relationships were abandoned when the cue was in conflict with the place learning contingency. The role of the "dunce" ("dnc") cAMP-phosphodiesterase and the "rutabaga" ("rut") adenylyl cyclase were examined in all conditions. Both "dnc[superscript 1]" and "rut[superscript 2080]" mutant flies failed to display significant S-R relationships with two attractive cues, and have characteristically lower conditioning scores under most conditions. Thus, learning can have profound effects on separate native S-R relationships in multiple contexts, and mutation of the "dnc" and "rut" genes reveal complex effects on behavior.
Descriptors: Cues, Stimuli, Animal Behavior, Entomology, Genetics, Animals, Conditioning
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
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