Tag

Dragonflies

All articles tagged with #dragonflies

Dragonflies Fly Like Fighter Pilots, New Study Finds
science1 month ago

Dragonflies Fly Like Fighter Pilots, New Study Finds

Male dragonflies defend territories through dogfights that follow simple, vision-based rules aimed at staying behind rivals, a behavior strikingly similar to human fighter pilots; researchers used stereo high-speed cameras to reconstruct 3D flight paths and found prey-hunting trajectories differ from territorial battles, with dogfights featuring more complex maneuvers, up to 6 G turns, and frequent gliding. The study suggests frontally biased vision drives these tactics and points to vision-guided drones as a potential application.

Dragonfly Vision Reveals Deeper Red Light, Paving Optogenetics Advances
science4 months ago

Dragonfly Vision Reveals Deeper Red Light, Paving Optogenetics Advances

New research shows dragonflies see red light at around 720 nm—beyond human vision—via a red opsin, a trait evolved in parallel with humans. This deeper red sensitivity could let optogenetic tools reach deeper tissues noninvasively, potentially aiding neurological research and therapies; male dragonflies may use red cues to tell sexes in flight.

Oxygen wasn’t the bottleneck for giant Paleozoic insects, new study finds
science5 months ago

Oxygen wasn’t the bottleneck for giant Paleozoic insects, new study finds

A new study across 44 insect species shows that the tracheal system in insects wouldn’t need dramatic expansion as size increases, meaning the ancient giants like Meganeuropsis permiana could still deliver oxygen efficiently. The finding undermines the long-held oxygen-constrain hypothesis and suggests giant bugs weren’t blocked by atmospheric oxygen after all; other factors—predation by aerial vertebrates, heat buildup during flight, molting/structural constraints, and open circulation—likely helped limit insect size, with future research exploring the role of air sacs in ventilation.