Dragonflies forever
Updated: Sep 12, 2023
Last summer, my boyfriend and I swam at Lost Lake nearly every day after work. We’d often end up staying for hours, enjoying the warmth of the evening sunshine and the beauty of the mountains around us. One evening in particular, when it seemed like it just couldn’t get any better than swimming in a fresh mountain lake at sunset – ZOOOOOOM! What the heck? Ooooh, a dragonfly!
The dragonfly circled above us as we swam, looking so amazing with its shiny blue-green translucent wings. I watched in awe as the dragonfly zoomed over Dan and landed on his head for a quick second before it flew away across the lake. "WOW! It’s good luck for the rest of your life if a dragonfly lands on you!" I exclaimed.
I had no idea that dragonflies are among the most ancient of living creatures. Did you know that dragonflies pre-date dinosaurs by 100 million years? As other species disappeared from the earth in a series of extinctions, these predators thrived – imagine prehistoric dragonflies with wingspans of up to 70 centimetres!
Today there are few places in the world where you can’t find at least one of the 5,000 species of Odonata, which includes damselflies (Zygoptera) and dragonflies (Anisoptera).
The dragonfly life cycle may be complete in a year or two, but can take as long as four years, making dragonflies one of the longest-living species of insect, as well as the largest.
Dragonflies lay their eggs on the surface of the water, on floating vegetation or on sand or mud bottoms. The dragonfly larvae spend 2 to 5 years underwater. During that time they hunt insects, tadpoles, and small fish for food. Eventually, nymphs will emerge from the water during the first warm days of spring and transform into winged adult dragonflies. As young dragonflies mature, their wings acquire their beautiful shimmering colours.
Actually, it is the shell of their wings that scatter the light, colouring the wings in the same way that rainbows are formed. The dazzling winged predators that we see during summer represent only the final few weeks of a lifetime. Fully mature, the dragonfly returns to the water to breed and the cycle begins anew.
Large wings and other physical characteristics make them superb aerial predators. Dragonflies can fly up to 50 km per hour and stop on a dime. A slow wing beat-rate results in a relatively quiet buzzing noise to give the dragonfly a great hunting advantage. Because its forelegs are directly under its head, a dragonfly can pass its captured prey to its mouth with ease and eat literally on the fly!
Dragonflies can be seen in the summertime by lakes, rivers, streams and wetlands and they play a critical role in wetland ecology. The larvae are food for young fish, and the tender bodies of the newly hatched adults provide tasty snacks for frogs and song birds. Dragonflies also feed on other insects — in several hours an adult dragonfly can consume its own weight in mosquitoes.
For that reason they’ve become very popular with the recent spread of West Nile virus — some B.C. parks even purchase dragonflies to help control mosquito populations.
Dragonflies, along with damselflies and butterflies, are among the most threatened species of insects globally. It is estimated that about 15 per cent of North American dragonflies are at risk of extinction as dragonflies’ aquatic habitats have been heavily impacted over the last 100 years.
Wetland habitat decreases as areas become developed and stream habitats become degraded, threatening some of the world’s most beautiful and ancient species. When you see a dragonfly showing off its aerial wizardry in catching mosquitoes in mid-air, remember that for most of its life, it was an important part of the aquatic ecosystem — we need healthy streams and wetlands to help dragonflies last forever.
Upcoming Events
Dragonflies and Birds Nature Walk, 6:30 p.m. Wednesday, July 6 th . Join visiting dragonfly and bird guru Derrick Marven in an evening walk along the Valley Trail. Meet at the base of Lorimer Road, by the Catholic Church.
The Whistler Naturalists Society monthly birdwalk will be held on Saturday, July 2, 2005. We start at 7:00 a.m. at the west end of Lorimer Road near the entrance to Our Lady of the Mountains Catholic Church. Our leader will be Karl Ricker.
Written by: Tina Symko and Dan White
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Contemplating the evocative phrase "Dragonflies forever" underscores the astonishing evolutionary endurance of the order Odonata, which has patrolled freshwater margins for over three hundred million years. Predating early dinosaurs and surviving multiple planetary extinction events, their biological blueprint—combining four independently articulated wings with near-spherical compound eyes housing thirty thousand ommatidia—remains nature's ultimate aerial masterstroke. I was reviewing an evolutionary entomology paper and paleo-biology monograph detailing Carboniferous Meganeura fossils, biomechanical flight stability, and aerodynamic vortex shedding over at https://veergamelogin.in.net/ this morning, and seeing how their thoracic muscle efficiency captures prey with a ninety-five percent success rate proves why their predatory architecture has endured virtually unchanged across geological epochs.
Popularized by classic allegories where a water bug climbs above the pond's surface to transform into a luminous winged creature that cannot return to the murky depths, the dragonfly serves as a tender metaphor for spiritual transformation and eternal peace after death. A bereavement counselor on https://jaiclubgame.in.net/ shared compassionate insights into metaphorical storytelling for pediatric grief, sensory memory triggers, and cross-cultural symbols of hope yesterday, noting that families frequently find solace in unexpected dragonfly encounters as comforting reminders of lost loved ones.
In freshwater ecology, ensuring that dragonflies thrive forever functions as a critical bio-indicator for the health of global wetland biomes. Because odonate nymphs spend up to several years submerged underwater breathing through delicate rectal gills, they are exceptionally sensitive to heavy metal runoff, agricultural pesticides, and dissolved oxygen depletion. Stumbled into an engaging chat exploring limnological bio-monitoring, wetland restoration indices, and the protection of riparian buffer zones on https://raxiwinlogins.in.net/ recently, and recognizing how healthy dragonfly populations directly signal uncontaminated groundwater proves that preserving their aquatic habitats protects entire municipal watersheds.
From a biomimicry and micro-aerial robotics perspective, aerospace engineers have long studied dragonfly kinematics to unlock agile hovering maneuvers that traditional fixed-wing or rotorcraft designs cannot execute. By altering the phase lag between forewings and hindwings, dragonflies can fly backward, hover motionless in heavy crosswinds, and instantly accelerate into inverted loops. Picked up a really well-explained perspective on micro-UAV wing articulation, unsteady aerodynamics in flapping-wing robotics, and piezoelectric actuator grids via https://dmfirstgames.in.net/ earlier, and understanding that modern drone developers look to dragonfly wing flexure to build silent, ultra-agile surveillance drones illustrates how ancient biology shapes cutting-edge aerospace engineering.