![]() ![]() They included some of the most radioactive areas on the planet, but also four sites outside the Chernobyl Exclusion Zone and with background radiation levels used as controls. These localities were distributed along a wide gradient of radioactive contamination. ![]() During those three years we analysed the dorsal skin colouration of more than 200 male frogs captured in 12 different breeding ponds. Between 20 we examined in detail the colouration of Eastern tree frogs in different areas of northern Ukraine. These actions make it less likely that individuals exposed to radiation will go on to suffer cell damage and increase their survival chances.Īfter detecting the first black frogs in 2016, we decided to study the role of melanin colouration in Chernobyl wildlife. In addition, it can scavenge and neutralize ionized molecules inside the cell, such as reactive oxygen species. Melanin absorbs and dissipates part of the radiation energy. And its protective role can extend to ionizing radiation too, as it has been shown with fungi. What is less known is that this class of pigments can also reduce the negative effects of ultraviolet radiation. Melanin is responsible for the dark color of many organisms. The species normally has a bright green dorsal coloration, although occasional darker individuals can be found. That year, close to the damaged nuclear reactor, we detected several Eastern tree frogs (Hyla orientalis) with an unusual black tint. German Orizaola and Pablo Burraco write via The Conversation: Our work in Chernobyl started in 2016. ![]()
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