8legs: Samuel fabian

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Older than the dinosaurs: scientists finally unlock secret of the mayfly’s dance

Scientists from Oxford reconstructed 3D flight paths of mayflies in London swarms to reveal the dance’s purpose.
The vertical dance helps male mayflies identify males from females and avoid chasing the wrong targets.
Low light makes distinguishing sexes harder, so staying below females conserves reproductive effort.
The study notes mayflies have lived for hundreds of millions of years, with modern species dwindling in Britain.
Britain’s chalk streams have lost a substantial portion of mayfly species since 1998, signaling ecosystem stress.
Pollution, sediment runoff and rising water temperatures are eroding mayfly habitats across Europe.
Researchers emphasize this dance could be a long-standing solution to mate selection in swarms.
Male mayflies may attempt to mate with objects that resemble females, like a beach ball, if filters fail.
The research used 3D filming to capture large swarms in the London borough of Richmond.
The Guardian coverage connects the findings to broader insect declines and biodiversity concerns.

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