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https://www.patreon.com/deeplook Because it's hoarding protein. Not just for itself, but for the butterfly it will become and every egg that butterfly will lay. And it's about to lose its mouth... as it wriggles out of its skin during metamorphosis.
DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Get a new perspective on our place in the universe and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small.
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That caterpillar in your backyard is chewing through your best leaves for a good reason.
“Caterpillars have to store up incredible reserves of proteins,” said Carol Boggs, an ecologist at the University of South Carolina. “Nectar doesn’t have much protein. Most of the protein that goes to making eggs has to come from larval feeding.”
Caterpillars are the larval stage of a butterfly. Their complete transformation to pupa and then to butterfly is a strategy called holometaboly. Humans are in the minority among animals in that we don’t go through these very distinct, almost separate, lives. We start out as a smaller version of ourselves and grow bigger.
But from an evolutionary point of view, the way butterflies transform make sense.
“You have a larva that is an eating machine,” said Boggs. “It’s very well-suited to that. Then you’re turning it into a reproduction machine, the butterfly.”
Once it becomes a butterfly it will lose its mouth, grow a straw in its place and go on a liquid diet of sugary nectar and rotten fruit juices. Its main job will be to mate and lay eggs. Those eggs started to develop while it was a pupa, using protein that the caterpillar stored by gorging on leaves. We think of leaves as carbohydrates, but the nitrogen they contain makes them more than one quarter protein, said Boggs.
-- What are the stages of a butterfly?
Insects such as butterflies undergo a complete transformation, referred to by scientists as holometaboly. A holometabolous insect has a morphology in the juvenile state which is different from that in the adult and which undergoes a period of reorganization between the two, said Boggs. The four life stages are egg, larva (caterpillar), pupa (also known as chrysalis) and butterfly.
-- What if humans developed like butterflies?
“We’d go into a quiescent period when we developed different kind of eating organs and sensory organs,” said Boggs. “It would be as if we went into a pupa and developed straws as mouths and developed more elaborate morphology for smelling and developed wings. It brings up science fiction images.”
---+ Read the entire article on KQED Science:
https://ww2.kqed.org/science/2017/07/11/why-is-the-very-hungry-caterpillar-so-dang-hungry/---+ For more information:
Monarch Watch:
http://www.monarchwatch.orgCalifornia Pipevine Swallowtail Project:
https://www.facebook.com/CaliforniaPipevineSwallowtail/A forum organized by Tim Wong, who cares for the butterflies in the California Academy of Sciences’ rainforest exhibit. Wong’s page has beautiful photos and videos of California pipevine swallowtail butterflies at every stage – caterpillar, pupa and butterfly – and tips to create native butterfly habitat.
---+ More Great Deep Look episodes:
What Gives the Morpho Butterfly Its Magnificent Blue?
https://www.youtube.com/watch?v=29Ts7CsJDpgThis Vibrating Bumblebee Unlocks a Flower's Hidden Treasure
https://www.youtube.com/watch?v=SZrTndD1H10Roly Polies Came From the Sea to Conquer the Earth
https://www.youtube.com/watch?v=sj8pFX9SOXEIn the Race for Life, Which Human Embryos Make It?
https://www.youtube.com/watch?v=9mv_kuwQvoc---+ See some great videos and documentaries from the PBS Digital Studios!
PBS Eons: When Did the First Flower Bloom?
https://www.youtube.com/watch?v=13aUo5fEjNYCrashCourse: The History of Life on Earth - Crash Course Ecology #1
https://www.youtube.com/watch?v=sjE-Pkjp3u4---+ Follow KQED Science:
KQED Science:
http://www.kqed.org/scienceTumblr:
http://kqedscience.tumblr.comTwitter:
https://www.twitter.com/kqedscience---+ About KQED
KQED, an NPR and PBS affiliate in San Francisco, CA, serves Northern California and beyond with a public-supported alternative to commercial TV, Radio and web media.
Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is also supported by HopeLab, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Smart Family Foundation and the members of KQED.
#deeplook #caterpillars #butterflies
About the Site 🌐
This site provides links to random videos hosted at YouTube, with the emphasis on random. 🎥
Origins of the Idea 🌱
The original idea for this site stemmed from the need to benchmark the popularity of a video against the general population of YouTube videos. 🧠
Challenges Faced 🤔
Obtaining a large sample of videos was crucial for accurate ranking, but YouTube lacks a direct method to gather random video IDs.
Even searching for random strings on YouTube doesn't yield truly random results, complicating the process further. 🔍
Creating Truly Random Links 🛠️
The YouTube API offers additional functions enabling the discovery of more random videos. Through inventive techniques and a touch of space-time manipulation, we've achieved a process yielding nearly 100% random links to YouTube videos.
About YouTube 📺
YouTube, an American video-sharing website based in San Bruno, California, offers a diverse range of user-generated and corporate media content. 🌟
Content and Users 🎵
Users can upload, view, rate, share, and comment on videos, with content spanning video clips, music videos, live streams, and more.
While most content is uploaded by individuals, media corporations like CBS and the BBC also contribute. Unregistered users can watch videos, while registered users enjoy additional privileges such as uploading unlimited videos and adding comments.
Monetization and Impact 🤑
YouTube and creators earn revenue through Google AdSense, with most videos free to view. Premium channels and subscription services like YouTube Music and YouTube Premium offer ad-free streaming.
As of February 2017, over 400 hours of content were uploaded to YouTube every minute, with the site ranking as the second-most popular globally. By May 2019, this figure exceeded 500 hours per minute. 📈
List of ours generators⚡
Random YouTube Videos Generator
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Random Nonprofits and Activism Video Generator
