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Characterization of the octopaminergic and tyraminergic neurons in the central brain of Drosophila larvae.

The Journal of comparative neurology | 2014

Drosophila larvae are able to evaluate sensory information based on prior experience, similarly to adult flies, other insect species, and vertebrates. Larvae and adult flies can be taught to associate odor stimuli with sugar reward, and prior work has implicated both the octopaminergic and the dopaminergic modulatory systems in reinforcement signaling. Here we use genetics to analyze the anatomy, up to the single-cell level, of the octopaminergic/tyraminergic system in the larval brain and subesophageal ganglion. Genetic ablation of subsets of these neurons allowed us to determine their necessity for appetitive olfactory learning. These experiments reveal that a small subset of about 39 largely morphologically distinguishable octopaminergic/tyraminergic neurons is involved in signaling reward in the Drosophila larval brain. In addition to prior work on larval locomotion, these data functionally separate the octopaminergic/tyraminergic system into two sets of about 40 neurons. Those situated in the thoracic/abdominal ganglion are involved in larval locomotion, whereas the others in the subesophageal ganglion and brain hemispheres mediate reward signaling.

Pubmed ID: 24752702 RIS Download

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RRID:SCR_003070

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RRID:SCR_001905

Software environment and programming language for statistical computing and graphics. R is integrated suite of software facilities for data manipulation, calculation and graphical display. Can be extended via packages. Some packages are supplied with the R distribution and more are available through CRAN family.It compiles and runs on wide variety of UNIX platforms, Windows and MacOS.

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ImageJ (software resource)

RRID:SCR_003070

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View all literature mentions

Anti-Tyramine (antibody)

RRID:AB_90432

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RRID:BDSC_9313

Drosophila melanogaster with name w[*]; P{w[+mC]=Tdc2-GAL4.C}2 from BDSC.

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w[1118]; P{w[+mC]=UAS-Cameleon.2.1}82 (organism)

RRID:BDSC_6901

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