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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/2....017/07/11/why-is-the

---+ For more information:

Monarch Watch: http://www.monarchwatch.org

California Pipevine Swallowtail Project:
https://www.facebook.com/Calif....orniaPipevineSwallow
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=29Ts7CsJDpg

This Vibrating Bumblebee Unlocks a Flower's Hidden Treasure
https://www.youtube.com/watch?v=SZrTndD1H10

Roly Polies Came From the Sea to Conquer the Earth
https://www.youtube.com/watch?v=sj8pFX9SOXE

In 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=13aUo5fEjNY

CrashCourse: 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/science
Tumblr: http://kqedscience.tumblr.com
Twitter: 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

It's an all-out brawl for prime beach real estate! These Caribbean crabs will tear each other limb from limb to get the best burrow. Luckily, they molt and regrow lost legs in a matter of weeks, and live to fight another day.

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PBS Digital Studios Mega-playlist:

https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

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. Explore big scientific mysteries by going incredibly small.

On the sand-dune beaches where they live, male blackback land crabs do constant battle over territory. The stakes are high: If one of these baby-faced crabs secures a winning spot, he can invite a mate into his den, six or seven feet beneath the surface.

With all this roughhousing, more than feelings get hurt. The male crabs inevitably lose limbs and damage their shells in constant dust-ups. Luckily, like many other arthropods, a group that includes insects and spiders, these crabs can release a leg or claw voluntarily if threatened. It’s not unusual to see animals in the field missing two or three walking legs.

The limbs regrow at the next molt, which is typically once a year for an adult. When a molt cycle begins, tiny limb buds form where a leg or a claw has been lost. Over the next six to eight weeks, the buds enlarge while the crab reabsorbs calcium from its old shell and secretes a new, paper-thin one underneath.

In the last hour of the cycle, the crab gulps air to create enough internal pressure to pop open the top of its shell, called the carapace. As the crab pushes it way out, the same internal pressure helps uncoil the new legs. The replacement shell thickens and hardens, and the crab eats the old shell.

--- Are blackback land crabs edible?

Yes, but they’re not as popular as the major food species like Dungeness and King crab.

--- Where do blackback land crabs live?

They live throughout the Caribbean islands.

--- Does it hurt when they lose legs?

Hard to say, but they do have an internal mechanism for releasing limbs cleanly that prevents loss of blood.

---+ Read the entire article on KQED Science:

https://www.kqed.org/science/1....933532/whack-jab-cra

---+ For more information:

The Crab Lab at Colorado State University:
https://rydberg.biology.colostate.edu/mykleslab/

---+ More Great Deep Look episodes:

Want a Whole New Body? Ask This Flatworm How
https://www.youtube.com/watch?v=m12xsf5g3Bo

Daddy Longlegs Risk Life ... and Especially Limb ... to Survive
https://www.youtube.com/watch?v=tjDmH8zhp6o

---+ See some great videos and documentaries from the PBS Digital Studios!

Origin of Everything: The Origin of Gender
https://www.youtube.com/watch?v=5e12ZojkYrU

Hot Mess: Coral Reefs Are Dying. But They Don’t Have To.
https://www.youtube.com/watch?v=MUAsFZuFQvQ

---+ Follow KQED Science:

KQED Science: http://www.kqed.org/science
Tumblr: http://kqedscience.tumblr.com
Twitter: 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. Deep Look is a project of KQED Science, which is also supported by the National Science Foundation, the Templeton Religion Trust, the Templeton World Charity Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Fuhs Family Foundation and the members of KQED.

---+ Shoutout!

Congratulations to ?Jen Wiley?, who was the first to correctly ID the species of crab in our episode over at the Deep Look Community Tab:

https://www.youtube.com/channe....l/UC-3SbfTPJsL8fJAPK

#deeplook #pbsds #crab

Poema de D. Pedro Casaldáliga musicada pelo Grupo Kairoi da Espanha. Uma forma bonita de fazer memória de Maria.

"Playlist Best of Ultravox https://goo.gl/s6T8GZ
Subscribe for more https://goo.gl/1tdEtf"
ROCK STARS PERFORM LIVE IN CONCERT.

Ultravox - Hymn extended from the album Quartet fan made for fun only

說明

Ultravox - British New Wave rock band
"Hymn"
Album: Quartet
Year: 1982
Label: Chrysalis Records

I do not claim ownership to this song or video. All rights reserved by copyright holders

NOTICE: "Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use."

7 cosas sobre la medalla y cruz de San Benito

VÍDEO COMPLETO CON EL 4º PUNTO Y LA ORACIÓN: https://www.youtube.com/watch?v=YRSDyo8tofI

Tekton es un canal de noticias católicas nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará, nuestra web es www.tekton.info

8 razones para rezar cada día el Santo Rosario
Tekton es un canal de youtube católico nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como formación católica, oraciones, musica católica, vídeos del Papa Francisco, curiosidades, vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará, nuestra web es http://www.tekton.info
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12 claves para usar el escapulario de la Virgen del Carmen

Tekton es un canal de noticias católicas nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará, nuestra web es www.tekton.info

¿Qué ocurre cuando vas más seguido a la adoración eucarística?

Tekton es un canal de noticias católicas nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará, nuestra web es http://www.tekton.info

Tekton es un canal de youtube católico nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como formación católica, oraciones, música católica, vídeos del Papa Francisco, curiosidades, vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará

Web: http://www.tekton.info

Facebook: https://www.facebook.com/productoratekton/

Twitter: https://twitter.com/productoratekto?s=09

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Hacer un donativo: https://www.tekton.info/hacer-caridad/

#Tekton
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#CanalCatolicoYouTube

Conoce la oración que el Padre Pio rezaba a la Virgen María

Tekton es un canal de youtube católico nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como formación católica, oraciones, música católica, vídeos del Papa Francisco, curiosidades, vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará

Twitter de Marcos Vera: https://twitter.com/MarcosVeraPrez1
Twitter de Jesus Sellas: https://twitter.com/JesusSellas

Hacer un donativo: https://www.tekton.info/hacer-caridad/

Tienda de merchandising de Tekton: https://teespring.com/stores/t....ekton-centro-televis

Web: http://www.tekton.info
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Instagram: https://www.instagram.com/productoratekton/
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#Tekton
#TektonCentroTelevisivo
#TektonYouTube
#CanalCatolicoYouTube

La Medalla Milagrosa: Siete enigmas que quizá no sabías, secretos sobre la medalla

Tekton es un canal de noticias católicas nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará, nuestra web es http://www.tekton.info

Conoce la oración del Padre Pio que está convirtiendo a muchas personas

TEKTON NECESITA TU APOYO PARA CONTINUAR CON SU LABOR APOSTÓLICA Y CARITATIVA, SI PUEDES HACERNOS UN DONATIVO TIENES DOS FORMAS:

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OTRAS REDES SOCIALES
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Twitter Marcos: https://twitter.com/marcosveraprez1?lang=es



Tekton es un canal de youtube católico nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como formación católica, oraciones, música católica, vídeos del Papa Francisco, curiosidades, vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará

Instagram de Marcos Vera: https://www.instagram.com/marcosveraperez/

Twitter de Marcos Vera: https://twitter.com/MarcosVeraPrez1
Twitter de Jesus Sellas: https://twitter.com/JesusSellas

Hacer un donativo: https://www.tekton.info/hacer-caridad/

Tienda de merchandising de Tekton: https://teespring.com/stores/t....ekton-centro-televis

Web: http://www.tekton.info
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Twitter: https://twitter.com/productoratekto?s=09
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#Tekton
#TektonCentroTelevisivo
#TektonYouTube
#CanalCatolicoYouTube

50 Consejos del Padre Pio que te ayudarán a ser santo, no te lo puedes perder


Tekton es un canal de youtube católico nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como formación católica, oraciones, música católica, vídeos del Papa Francisco, curiosidades, vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará

Web: http://www.tekton.info

Facebook: https://www.facebook.com/productoratekton/

Twitter: https://twitter.com/productoratekto?s=09

Instagram: https://www.instagram.com/productoratekton/

Google+: https://plus.google.com/u/1/+T....ektonTekton?hl=es-41

Hacer un donativo: https://www.tekton.info/hacer-caridad/

#Tekton
#TektonCentroTelevisivo
#TektonYouTube
#CanalCatolicoYouTube

7 consejos para rezar correctamente el Santo Rosario

Tekton es un canal de noticias católicas nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará, nuestra web es http://www.tekton.info