Olfactory and Neuromodulatory Signals Reverse Visual Object Avoidance to Approach in Drosophila.

ABSTRACT: Behavioral reactions of animals to environmental sensory stimuli are sometimes reflexive and stereotyped but can also vary depending on contextual conditions. Engaging in active foraging or flight provokes a reversal in the valence of carbon dioxide responses from aversion to approach in Drosophila [1, 2], whereas mosquitoes encountering this same chemical cue show enhanced approach toward a small visual object [3]. Sensory plasticity in insects has been broadly attributed to the action of biogenic amines, which modulate behaviors such as olfactory learning, aggression, feeding, and egg laying [4-14]. Octopamine acts rapidly upon the onset of flight to modulate the response gain of directionally selective motion-detecting neurons in Drosophila [15]. How the action of biogenic amines might

SUBMITTER: Cheng KY 

PROVIDER: S-EPMC6615044 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature