...insect wing shapes that evolve with different behaviors: such as migration, or predation (think about your dragonflies), or even between different different environments in the same forest (ground versus canopy) /2pic.twitter.com/Qi4Dso2yEh
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There are even more questions about wing flexibility, thinking about how internal shapes such as "domains" (membrane bounded by stiff yet flexible veins, termed by
@jordanhoffmann and@seth_donoughe) affect the overall flight performance of insect wings /3https://www.pnas.org/content/115/40/9905 …Prikaži ovu nit -
But in order to even start to ask these questions, we had to break down: What is an insect wing? How can we compare say, a fruit fly wing? And a dragonfly wing? What do their shapes have in common and how are they different? So that took us on a methodology journey... /4pic.twitter.com/pN7kLam5zy
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Where we analyzed wings, using a "Level-set" approach to image segment high quality scans of insect wings. We dove into stacks on stacks of books in the
@mayrlibrary -- and found a treasure trove of highly detailed insect wings, that have not yet been scanned by the#BHL /5pic.twitter.com/D40pAPnePpPrikaži ovu nit -
Using this technique (code at github link in paper), we put wings and their shapes onto morpho-spaces, a graphical place to compare shapes. We normalized all of our insect wings so that we could start to compare complex wings (ex. dragonfly) and simple wings (ex. fruitfly) /6pic.twitter.com/wUUxspa4g7
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Okay, so! When you're looking at our paper, you'll see we take a few "representative species" -- these were chosen to compare difference in overall shape (perimeter), internal venation (the added up # of all vein lengths inside the wing), & a wing's internal domains /7pic.twitter.com/Vnix9f9fx8
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This is 1) a methods paper! Woo! We're trying to share a cool technique and start asking questions about wing shapes on a *broad* scale. 2) We've got close to ~800 wings here, and there's so much more to scan in. There's an importance to browsing in a library /9pic.twitter.com/d34HU7Xzm7
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Also 3) our morphospaces put wings into categories - where wings with sparse venation (fruitfly) tend to have large and fewer domains, and wings with dense venation (dragonfly) have many (can have thousands) of domains that are small and circular - but again, why do you care? /10
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Because insect wings are AMAZING & inspire tech on many size scales - from small drones, to expanding wings, to even the microstructures on the surface of the wing (morpho butterfly wings are an excellent substrate to build nanomaterials on) /11 pic: slide I use in talkspic.twitter.com/1t35umztDB
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Lastly, I'm excited about the questions I can ask now that we have broken apart insect wings, across the phylogeny, into fundamental geometries. And we have a reliable/efficient technique to keep analyzing more! /12pic.twitter.com/3IqC0BEWNv
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Thanks again to
@mayrlibrary who helped w/ the never-ending wing search. Without random browsing, we would have a difficult time finding it! Resources like the#BiodiversityHeritageLibrary are making sure a lot of those texts are available, but there's more to find! /endPrikaži ovu nit
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| crafter | swimmer | NSF Post-doc Fellow in Biology in the