A dragonfly-flower can fly in many ways

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Maruf Hassan
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Joined: Sun Feb 12, 2023 3:41 am

A dragonfly-flower can fly in many ways

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In Thailand and Asia, many dragonflies inhabit wetlands, where they patrol for prey and seek aquatic habitats in which to breed. In a sunny forest pond, the male of Neurothemis displays here a spectacular wine color on the wings, whose veins are underlined with carmine red. Its wings are curved downwards, which is not common in dragonflies, and it looks like a flower with red petals whose petals hang down. As they perch on top of plants like rushes or aquatic grasses, a predator (a bird for example) or an observer can see a flower in its environment, instead of a juicy insect. We can wonder, by observing them, if these dragonflies are not insect-flowers which try to pass unnoticed by passing themselves off as floral organs by imitating their color and shape, as do many insects, such as the flower mantises, or spiders. It's probably a case of mimicry, one of many insect "superpowers" for over 300 million years.

The intriguing flight of dragonflies Some dragonflies engage in improbable acrobatics that fascinate physicists and biologists: how are they capable of such feats? are their wings particularly adapted and how? Can we take inspiration from it to innovate? With four synchronized wings attached to the muscles of the thorax, several types of flight are possible, from gliding to fast flapping flight, including hovering and backward flight. The "beaten" flight, like that of birds or bats, remains the most maneuverable - much more than that allowed by propellers for example. [ Nearly 80,000 readers trust The Conversation newsletter to better phone number list understand the world's major issues . Subscribe today ] While humans have long sought inspiration from insects , given their abilities and small size, there are still few explorations of morphological, phylogenetic, and behavioral diversity that would shed light on the relationships between insects. wing structures and the particular flight of certain species.


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This requires identifying and documenting flights with high-speed cameras in the wild if possible. Studies of flight mechanics in the laboratory show how the diversity of shapes of the wings and their components, shape and arrangement of the ribs for example, and the diversity of behaviors induce different capacities. We are also looking at the flight of fossil insects , whose wings were different from the wings of modern insects, in order to understand how certain innovations in nature allowed dragonflies, during their evolution, to acquire flight as perfected. From an evolutionary point of view, the first dragonflies are among the first flying animals, and have been patrolling the ecosystems of our planet for more than 300 million years. Based on the shape of their eyes – some fossils have the eyes and body preserved – it is believed that these large dragonflies (or "clawflies" for the English) also hunted like hawks , but their flight abilities were less spectacular. than their descendants Anisoptera, the "true" dragonflies.
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