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Dragonfly Eyes: A Marvel of Nature’s Design (Sep 21, 2023)
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Dragonfly Eyes: A Marvel of Nature’s DesignDragonflies, with their iridescent bodies and delicate wings, are a common sight near bodies of water. However, one of their most fascinating features is their eyes. Dragonfly eyes are a marvel of nature’s design, providing these insects with almost 360-degree vision.To get more news about dragonfly eyes, you can visit shine news official website.Dragonfly eyes consist of approximately 8,000 individual telescoping lenses called ommatidia. These large eyes appear out of proportion to the rest of the head and body, covering most of the head and coming together at the top. This unique structure allows dragonflies to have an almost panoramic field of vision.But it’s not just the structure that’s impressive. Dragonflies have what’s known as ultra-multicolour vision. Humans have tri-chromatic vision, which means we see colours as a combination of red, blue, and green. This is thanks to three different types of light-sensitive proteins in our eyes, called opsins. However, dragonflies take this to another level. A study found that each dragonfly species has no fewer than , and some a whopping 30, different visual opsins.These extra opsins allow dragonflies to see a broader spectrum of colours than humans can. For instance, other studies have found that dragonflies can see ultraviolet on top of blue, green, and red. They can also recognise polarised light coming off reflective surfaces like water. This enhanced colour discrimination likely plays a crucial role in their hunting strategy.Dragonflies are known for their incredible flight abilities, including hovering, darting, and even flying backwards. Their advanced vision plays a significant role in these feats. The many lenses of their eyes collect light and send information about the visual scene to interneurons, which further process the information3. This allows them to quickly react to changes in their environment and catch prey mid-flight.Interestingly, dragonflies use different opsins at different ages. For instance, the larvae of some species that hatch in sand tend to lack blue opsins. This is probably because blue light does not reach them easily. As they mature and leave their sandy homes for open water and air, their visual needs change.In conclusion, dragonfly eyes are a remarkable example of nature’s ingenuity. Their complex structure and function provide these insects with superior vision capabilities. Understanding these mechanisms not only gives us insight into the world of dragonflies but also has potential applications in technology and robotics. As we continue to study and learn from nature’s designs, who knows what other secrets we might uncover?
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