Burraco and colleagues find Chernobyl exclusion zone frogs are darker than those outside
Updated
Updated · BBC.com · Apr 26
Burraco and colleagues find Chernobyl exclusion zone frogs are darker than those outside
12 articles · Updated · BBC.com · Apr 26
Researchers sampled over 250 tree frogs from areas with varying radiation near Chernobyl, publishing 2022 data showing increased melanin and darker coloration in frogs from the exclusion zone.
Scientists hypothesize that darker coloration may offer some protection against radiation, though this remains unproven and debated. Other wildlife, including bank voles and fungi, also show possible adaptive changes.
While some species have thrived in the absence of humans, others struggle due to combined effects of radiation and climate change. The long-term ecological impacts and evolutionary adaptations remain complex and contested forty years after the disaster.
Are Chernobyl's darker frogs a glimpse of rapid evolution in action?
Can a Chernobyl fungus that 'eats' radiation help protect astronauts in space?
Is the absence of humans a greater benefit than radiation is a harm?
Why do Chernobyl's feral dogs show no obvious signs of radiation damage?
Forty years on, is war a greater threat to Chernobyl than radiation?
Rapid Evolution of Melanin-Driven Radiation Resistance in Chernobyl Frogs and Its Human Applications
Overview
Following the 1986 Chernobyl nuclear disaster, high radiation levels in the Exclusion Zone triggered natural selection favoring Eastern tree frogs with darker skin due to increased melanin. This rapid adaptation, occurring over just 10 to 15 generations, provided effective protection by neutralizing harmful free radicals and shielding cells from radiation damage. The dark skin trait is stable and heritable, with no negative health effects observed in the frogs today. Insights from these melanin-based defenses in Chernobyl wildlife have inspired the development of innovative radiation-protective materials for space exploration and medical treatments, though ethical concerns about safety and long-term effects remain under careful consideration.