Visual recognition of social signals by a tectothalamic neural circuit.

Social affiliation emerges from individual-level behavioural rules that are driven by conspecific signals. Long-distance attraction and short-distance repulsion, for example, are rules that jointly set a preferred interanimal distance in swarms. However, little is known about their perceptual mechanisms and executive neural circuits.

Live imaging using a FRET glucose sensor reveals glucose delivery to all cell types in the Drosophila brain.

All complex nervous systems are metabolically separated from circulation by a blood-brain barrier (BBB) that prevents uncontrolled leakage of solutes into the brain. Thus, all metabolites needed to sustain energy homeostasis must be transported across this BBB. In invertebrates, such as Drosophila, the major carbohydrate in circulation is the disaccharide trehalose and specific trehalose transporters are expressed by the glial BBB.