Butterfly Migration: Sun Compass on Demand
Published:06 Dec.2021 Source:University of Würzburg
Monarch butterflies are famous for their annual long-distance migration, which takes them over several thousand kilometres from the north of the USA to their overwintering habitat in central Mexico. On their migration, the conspicuously orange-black-white colored butterflies use sun information as main orientation reference.
But how is sun information processed in the butterfly's brain? Previous studies have already described cells that process the solar azimuth. "However, we didn't know these cells encode the sun during flight," says Jerome Beetz from the Biocentre at Julius-Maximilians-Universität Würzburg (JMU) in Bavaria, Germany.