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Palm Oil DetectivesSavage’s Glass Frog Centrolene savagei
Savage’s Glass Frog Centrolene savagei
Locations: Endemic to Colombia, found in the Cordillera Central and Cordillera Occidental mountain ranges in the departments of Quindío, Risaralda, Caldas, and Valle del Cauca, between 1,400 and 2,410 metres above sea level.
Perched on delicate leaves above rushing mountain streams, Centrolene savagei is a rare frog of wonder. The Savage’s Glass Frog, also known as the Savage’s Cochran Frog has translucent emerald skin that shimmers under moonlight, revealing a celestial map of organs and veins. These appear like a tiny universe of stars glowing beneath their skin. This remarkable adaptation serves as camouflage, allowing them to blend seamlessly into their misty rainforest habitat. Male frogs fiercely protect a clutch of around 30 eggs while females gather food. Tragically these magnificent #frogs face mounting threats from #deforestation for #palmoil #soy #meat along with #climatechange which is disrupting the delicate balance of their cloud forest home. Protecting the cloud forests of #Colombia is essential to ensuring their continued survival. #BoycottPalmOil #Boycott4Wildlife.
Savage’s Glass #Frogs of #Colombia 🇨🇴 have skin 🤯 that glows like sparkling stars 🌌 Males fiercely guard egg clutches. #PalmOil #Soy and #Meat #Deforestation are threats. Help them and be #Vegan 🥕🍆🌴🪔⛔️ #Boycottpalmoil #Boycott4Wildlife @palmoildetect https://wp.me/pcFhgU-a8R
Share to BlueSky Share to TwitterSavage’s Glass Frogs 🐸 live in the cloud #forests of #Colombia 🇨🇴 and face threats from the #pet trade and #agriculture. Their see-through skin protects them from predators. Help them survive and #Boycottpalmoil 🌴🪔🧐🚫 #Boycott4Wildlife @palmoildetect https://wp.me/pcFhgU-a8R
Share to BlueSky Share to TwitterAppearance & Behaviour
Savage’s Glass Frog is an exquisite amphibian with skin so translucent that their inner organs are visible, glowing like a hidden constellation beneath a veil of green. Their slender limbs end in sticky, webbed toes, perfectly adapted for clinging to leaves in humid forests. Their wide, golden eyes, speckled with flecks of black, provide keen night vision, allowing them to detect predators and prey under the dim glow of the forest canopy. At night, they call softly to attract mates, their gentle trills merging with the sounds of the rainforest.
Threats
Savage’s Glass Frog (Centrolene savagei) faces numerous threats that are rapidly altering their cloud forest habitat in the Colombian Andes. A study by Prado-Sañudo et al. (2020) found that the species was absent from certain locations where they had previously been recorded, suggesting population declines may already be underway. Conservation efforts must prioritise protecting Colombia’s cloud forests from further degradation.
Palm Oil and Soy Monoculture
Large-scale agricultural expansion for palm oil and soy plantations is devastating Colombia’s biodiverse rainforests. These monocultures replace native vegetation with single-crop plantations, destroying the undergrowth and streamside vegetation that Centrolene savagei relies on for shelter and breeding. As forest cover disappears, humidity levels drop, making their microhabitats drier and less suitable for egg development. The clearance of forests also leads to soil erosion, which can result in sedimentation of the clear mountain streams where these frogs lay their eggs.
Cattle Ranching
Extensive cattle ranching in the Colombian Andes is another major driver of deforestation. Forests are slashed and burned to create pastures, reducing available habitat for Centrolene savagei. The removal of trees along waterways destroys vital breeding sites, while cattle compact the soil, disrupting the natural flow of water and increasing erosion. The destruction of riparian zones reduces the availability of suitable egg-laying sites, directly impacting the frog’s ability to reproduce.
Illegal Pet Trade
Centrolene savagei is at risk of being targeted by the illegal pet trade due to their striking appearance and rarity. Glass frogs are often smuggled and sold internationally to collectors who seek out exotic species. This illegal trade removes individuals from wild populations, reducing genetic diversity and making the species more vulnerable to extinction. Additionally, captured frogs often suffer high mortality rates due to stress, improper handling, and unsuitable captive conditions.
Climate Change and Extreme Weather
Rising global temperatures are altering the delicate climatic conditions of Colombia’s montane forests. Extreme weather events, such as prolonged droughts and intense rainfall, are becoming more frequent. Droughts can dry up the small streams where Centrolene savagei reproduces, leading to egg desiccation and failed breeding seasons. Intense storms, on the other hand, cause flash floods that wash away egg clutches and displace adult frogs. Long-term shifts in temperature and precipitation could also disrupt breeding cycles and reduce the availability of insect prey.
Pesticides and Pollution Runoff into Rivers
Agricultural chemicals, including pesticides and herbicides used in large-scale farming, often wash into nearby streams and rivers. Centrolene savagei, like many amphibians, has highly permeable skin that makes them exceptionally sensitive to toxins. Pesticide exposure can lead to developmental deformities, weakened immune systems, and increased mortality rates in both tadpoles and adults. Additionally, runoff containing fertilisers can trigger algal blooms, depleting oxygen levels in the water and further degrading their habitat.
Geographic Range
Savage’s Glass Frog is endemic to Colombia’s Andean cloud forests, occupying both the Cordillera Central and Cordillera Occidental. They are found in humid montane forests, clinging to vegetation near fast-flowing streams where they breed and shelter.
Diet
These frogs are insectivorous, feeding on a diet of small invertebrates, including flies, moths, and spiders. Their sticky tongues enable them to snatch unsuspecting prey with precision, while their nocturnal hunting habits help them avoid daytime predators.
Mating and Reproduction
Male Centrolene savagei play a vital role in protecting their offspring. They guard egg clutches laid on leaves overhanging streams, keeping them hydrated by absorbing water and transferring it to the eggs with their bodies. This parental care reduces embryo desiccation and shields them from predators. Once the eggs hatch, the tiny, transparent tadpoles drop into the water below, beginning their journey to adulthood.
FAQs
Why do Savage’s Glass Frogs have transparent skin?
Their translucent skin serves as an advanced form of camouflage. By reflecting the colour and light of their surroundings, they can evade predators more effectively. This adaptation, combined with their nocturnal habits, makes them exceptionally difficult to spot in the wild.
What are the main threats to Savage’s Glass Frog?
Deforestation for agriculture and human expansion poses the greatest risk. As forests are cleared, populations become isolated, making it harder for them to find mates and maintain genetic diversity. Additionally, climate change could alter their delicate montane ecosystems, impacting their breeding success. The illegal pet trade is a growing risk as these beautiful frogs are sought out for private collections reducing their populations in the wild.
Do Glass Frogs Make Good Pets?
No, glass frogs— including Centrolene savagei—do not make good pets. Keeping them in captivity is not only unethical but also contributes to their decline in the wild. These frogs have highly specialised habitat needs that are impossible to replicate in captivity. They require pristine, high-humidity cloud forests with access to flowing, oxygen-rich streams for breeding. Even small environmental changes can stress them, leading to illness and death.
Beyond the difficulty of caring for them, removing Centrolene savagei from the wild is a major conservation issue. Every individual taken for the pet trade weakens wild populations, reducing genetic diversity and making the species more vulnerable to extinction. Many glass frogs die in transit due to improper handling, dehydration, and stress. Others perish in captivity because of unsuitable conditions or lack of knowledge about their complex dietary and breeding requirements.
If you truly care about these remarkable amphibians, the best way to help them is to never buy wild-caught glass frogs and to actively speak out against the exotic pet trade. Instead, support habitat conservation efforts and help protect the fragile ecosystems they depend on. #BoycottWildlifeTrade #BoycottPalmOil #Boycott4Wildlife
What makes Savage’s Glass Frog unique?
Their combination of transparent skin, nocturnal behaviour, and dedicated male parental care sets them apart from many other amphibians. The ability of males to hydrate and defend their eggs is a rare adaptation that improves their offspring’s chances of survival.
Are Savage’s Glass Frogs endangered?
More research is needed to determine their current population trends. However, habitat destruction and population declines in certain areas suggest that conservation efforts are needed to ensure their long-term survival.
Take Action!
Colombia’s cloud forests are disappearing at an alarming rate, threatening the survival of Centrolene savagei and countless other species. Protect their habitat by supporting indigenous-led conservation initiatives and refusing to buy products linked to deforestation. Use your voice to demand stronger environmental protections and share awareness about the importance of preserving these fragile ecosystems. Every choice matters. Go #Vegan for the animals and #BoycottPalmOil #Boycott4Wildlife.
Support Savage’s Glass Frogs by going vegan and boycotting palm oil in the supermarket, it’s the #Boycott4Wildlife
Support the conservation of this species
This animal has no protections in place. Read about other forgotten species here. Create art to support this forgotten animal or raise awareness about them by sharing this post and using the #Boycottpalmoil #Boycott4Wildlife hashtags on social media. Also you can boycott palm oil in the supermarket.
Further Information
Escobar-Lasso, S., & Rojas-Morales, J. A. (2012). Antipredatory behaviors of the Colombian endemic glassfrog Centrolene savagei (Anura: Centrolenidae). Boletín Científico. Centro de Museos. Museo de Historia Natural, 16(1), 1–10.
IUCN SSC Amphibian Specialist Group. 2017. Centrolene savagei. The IUCN Red List of Threatened Species 2017: e.T54990A63062174. https://dx.doi.org/10.2305/IUCN.UK.2017-3.RLTS.T54990A63062174.en. Accessed on 09 February 2025.
Ospina, A. M., Navarro-Salcedo, P., Rios-Soto, J. A., Duarte-Marín, S., & Vargas-Salinas, F. (2019). Temporal patterns, benefits, and defensive behaviors associated with male parental care in the glassfrog Centrolene savagei. Herpetological Journal, 162–174.
Prado-Sañudo, M. L., Giraldo, A., & Bolívar, W. (2020). Population status of Centrolene savagei in the Western and Central Andes of Colombia. Boletín Científico Centro de Museos Museo de Historia Natural, 24(2), 116–124.
How can I help the #Boycott4Wildlife?
Take Action in Five Ways
1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.
2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.
Mel Lumby: Dedicated Devotee to Borneo’s Living Beings
Anthropologist and Author Dr Sophie Chao
Health Physician Dr Evan Allen
The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert
How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy
3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.
https://twitter.com/CuriousApe4/status/1526136783557529600?s=20
https://twitter.com/PhillDixon1/status/1749010345555788144?s=20
https://twitter.com/mugabe139/status/1678027567977078784?s=20
4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.
5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here
Pledge your supportLearn about other animals endangered by palm oil and other agriculture
Global South America S.E. Asia India Africa West Papua & PNGBlonde Capuchin Sapajus flavius
Savage’s Glass Frog Centrolene savagei
Pesquets Parrot Psittrichas fulgidus
Tanimbar Eclectus Parrot Eclectus riedeli
Malayan Flying Fox Pteropus vampyrus
Mountain Cuscus Phalanger carmelitae
Learn about “sustainable” palm oil greenwashing
Read more about RSPO greenwashing
Lying Fake labels Indigenous Land-grabbing Human rights abuses Deforestation Human health hazardsA 2019 World Health Organisation (WHO) report into the palm oil industry and RSPO finds extensive greenwashing of palm oil deforestation and the murder of endangered animals (i.e. biodiversity loss)
Read more#Agriculture #Amphibian #amphibians #animals #Boycott4wildlife #BoycottPalmOil #BoycottWildlifeTrade #climatechange #Colombia #deforestation #forests #ForgottenAnimals #Frog #Frogs #GlassFrog #hunting #meat #meatAgriculture #PalmOil #palmOilDeforestation #palmoil #pet #poaching #pollution #SavageSGlassFrogCentroleneSavagei #SouthAmericaSpeciesEndangeredByPalmOilDeforestation #soy #soyDeforestation #vegan #vulnerable #VulnerableSpecies #waterPollution
Rebecca Wismeg-KammerlanderHey there, I can see you!
📍Zoo Leipzig
📷 Canon EOS R8 | Canon RF 100mm f2.8L Macro IS USM
#photography #canon #canonr8 #canonphotography #animalphotography #closeup #frog #glassfrog #amphibian #leipzig #zooleipzig
📍Zoo Leipzig
📷 Canon EOS R8 | Canon RF 100mm f2.8L Macro IS USM
#photography #canon #canonr8 #canonphotography #animalphotography #closeup #frog #glassfrog #amphibian #leipzig #zooleipzig
llewellyglassfrog question: what if the transparency of the skin of glassfrogs is a side effect of the skin being adapted to be super-thin for breathing reasons? Has anyone investigated this already?
BestReptile 🦎Cascade Glass Frog | Rana de vidrio de cascada. sachatamia albomaculata.
Picture by Gabriel Venegas Jimenez
https://www.picuki.com/profile/gabrielvenegasjimenez
#Herpetology #Glassfrog #WildlifePhotography #NaturePhotography #CostaRica #Frog #Frogs #FrogFriday #Herping #Photography #Biodiversity
Plazi Species#NewSpecies
New glassfrog from #ecuador climbed in:
Centrolene kutuku
Treatment: http://treatment.plazi.org/id/458CECC2-8C71-4390-8FD5-B4F1F6F42317
Publication: http://doi.org/10.3897/zse.100.116350
#Zoosyst_Evo #CentroleneKutuku
#FAIRdata
#science #OA #openaccess #biology #taxonomy #ecology #biodiversity #nature #wildlife #conservation #animals #herpetology #herps #amphibia #frogs #glassfrog #frogfriday
Lukas VFN 🇪🇺Centrolene kutuku: A New #Glassfrog of the Genus Centrolene from the Subandean Kutukú Cordillera, eastern Ecuador https://novataxa.blogspot.com/2024/07/centrolene.html #Frogs #Frog #Animals
"The #NewSpecies is sister to Centrolene camposi from the #WesternCordillera of the #Andes of southwestern #Ecuador, and together they form a clade with C. condor from the Subandean Cóndor #Cordillera in southeastern Ecuador... the new species originated at the end of the #Pliocene."
[Herpetology • 2024] <i>Centrolene kutuku</i> • A New Glassfrog of the Genus <i>Centrolene</i><small> (Anura: Centrolenidae)</small> from the Subandean Kutukú Cordillera, eastern Ecuador
[A-D] Centrolene kutuku sp. nov. and [E–F.] C. camposi in life. Ron, García, Brito-Zapata, Reyes-Puig, Figueroa-Coronel & Cisner...
Amphibians Glow in Ways People Can’t See
Many animals have a colourful, yet largely hidden, trait. Marine creatures like #fish and corals can glow blue, green or red under certain types of light. So can land animals like penguins and #parrots. But until now, experts knew of only one salamander and a few #frogs that could glow. No longer. Among #amphibians, this ability to glow now appears fairly common — even if you can’t see it. Research has found that most amphibians glow as well – even if it’s not visible to human eyes. Protect amphibians and reptiles every time you shop and #Boycottpalmoil #Boycott4Wildlife
DYK not only #fish or #insects glow 🐟🐠🐛🦋? #Research has found that amphibians glow as well – even if it’s not visible to human eyes 🌈🌟🎇 Protect #amphibians and #reptiles every time you shop and #Boycottpalmoil #Boycott4Wildlife @palmoildetect https://palmoildetectives.com/2024/06/30/blue-and-uv-light-makes-many-amphibians-glow-in-ways-that-people-cant-normally-see/
Share to BlueSky Share to TwitterWritten by Erin Garcia de Jesús for Science News Explores under creative commons licence. Read the original article here.
The glow is produced through a process is known as fluorescence. A body absorbs shorter (higher energy) wavelengths of light. Almost immediately, it then re-emits that light, but now at longer (lower energy) wavelengths. People can’t see this glow, however, because our eyes aren’t sensitive enough to see the small amount of light given off in natural light.
Blue poison dart frogs by Aleksei Stemmer for Getty ImagesJennifer Lamb and Matthew Davis are biologists at St. Cloud State University in Minnesota. They shone blue or ultraviolet light on 32 species of amphibians. Most were salamanders and frogs. Some were adults. Others were younger. One animal was a wormlike amphibian known as a caecilian (Seh-SEEL-yun).
The researchers found some of the creatures in their natural habitats. Others came from places like the Shedd Aquarium in Chicago, Ill. (There, the pair were allowed to “come into the exhibit after dark and basically run through their exhibit,” Davis notes.)
Blue poison dart frog by Zoological Consult for Getty ImagesForest Rainbowfish Melanotaenia sylvaticaResearch shows that biofluorescence is widespread and common not only among fish amongst amphibians
To the researchers’ surprise, all the animals they tested glowed in brilliant colors. Some were green. The glow from others was more yellow. The colors glowed most strongly under blue light. Until now, scientists had seen such fluorescence only in marine turtles. The new finding suggests that this biofluorescence is widespread among amphibians.
The researchers reported their findings February 27 in Scientific Reports.
Red Eyed Tree Frog by Getty ImagesWhich parts of an animal glow differ with the species, Lamb and Davis found. Yellow spots on the eastern tiger salamander (Ambystoma tigrinum) glow green under blue light. But in the marbled salamander (A. opacum), the bones and parts of its underside light up.
Malayan Forest Gecko Cyrtodactylus pulchellus close up of faceThe researchers didn’t test what these amphibians use to glow. But they suspect the animals rely on fluorescent proteins or the pigments in some cells. If there are multiple ways they fluoresce, that would hint that the ability to glow evolved independently in different species. If not, the ancient ancestor of modern amphibians may have passed one trait on to species that are alive today.
Bornean Rainbow Toad Ansonia latidiscaFluorescence may help salamanders and frogs find one another in low light. In fact, their eyes contain cells that are especially sensitive to green or blue light.
One day, scientists might also harness the amphibians’ ability to glow. They could use special lights to search for the animals to survey their presence in the wild. That might help them see creatures that blend into their surroundings or hide in piles of leaves.
Blue poison dart frog by Zoological Consult for Getty Images
Take Action in Five Ways
1. Join the #Boycott4Wildlife on social media and subscribe to stay in the loop: Share posts from this website to your own network on Twitter, Mastadon, Instagram, Facebook and Youtube using the hashtags #Boycottpalmoil #Boycott4Wildlife.
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Join 1,392 other subscribers2. Contribute stories: Academics, conservationists, scientists, indigenous rights advocates and animal rights advocates working to expose the corruption of the palm oil industry or to save animals can contribute stories to the website.
Mel Lumby: Dedicated Devotee to Borneo’s Living Beings
Anthropologist and Author Dr Sophie Chao
Health Physician Dr Evan Allen
The World’s Most Loved Cup: A Social, Ethical & Environmental History of Coffee by Aviary Doert
How do we stop the world’s ecosystems from going into a death spiral? A #SteadyState Economy
3. Supermarket sleuthing: Next time you’re in the supermarket, take photos of products containing palm oil. Share these to social media along with the hashtags to call out the greenwashing and ecocide of the brands who use palm oil. You can also take photos of palm oil free products and congratulate brands when they go palm oil free.
https://twitter.com/CuriousApe4/status/1526136783557529600?s=20
https://twitter.com/PhillDixon1/status/1749010345555788144?s=20
https://twitter.com/mugabe139/status/1678027567977078784?s=20
4. Take to the streets: Get in touch with Palm Oil Detectives to find out more.
5. Donate: Make a one-off or monthly donation to Palm Oil Detectives as a way of saying thank you and to help pay for ongoing running costs of the website and social media campaigns. Donate here
Pledge your support#amazingAnimals #Amphibian #amphibians #animalCommunication #animalRights #biodiversity #bioluminescence #BorneanRainbowToadAnsoniaLatidisca #Boycott4wildlife #BoycottPalmOil #deforestation #extinction #fish #ForestRainbowfishMelanotaeniaSylvatica #ForgottenAnimals #Frog #Frogs #GlassFrog #insects #PalmOil #palmOilDeforestation #Parrots #reptiles #research #SavageSGlassFrogCentroleneSavagei
Utsav SrinetScientists Reveal How Glass Frogs Turn Transparent:https://bit.ly/3Gx4g4y
#glassfrog #frog #news #nature
#glassfrog #frog #news #nature
FrogyUKScientists find secrets how the glass frog turn transparent while sleeping may hold clues for understandingblood clotting in humans.
#glassfrog #glassfrogs #science #environment
