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Why are Chernobyl dogs genetically different from others?

2023-03-06 21:26:34Kosova&Bota SHKRUAR NGA REDAKSIA VOX
Why are Chernobyl dogs genetically different from others?
Why are Chernobyl dogs genetically different from others?

The dogs of Chernobyl can now tell us how to survive a nuclear disaster, writes fanpage.it.

35 years after the Chernobyl disaster (April 26, 1986), in addition to the human consequences, the consequences on the animals that still live there can easily be seen.

These animals live among the dilapidated and abandoned buildings in and around the closed factory, but are still able to find food, reproduce and survive.

"Their experience and their genes lead scientists to speculate that these dogs can teach humans how to live in even the most difficult and degraded environments, such as radioactive ones.

The study included 302 specimens. Different levels of radiation exposure may have made them genetically distinct from each other and from other dogs around the world.

Tim Mousseau, a professor of biological sciences at the University of South Carolina, believes that dogs "provide an incredible tool to examine the effects of this type of environment on mammals in general."

For the researchers, most of the dogs under surveillance, exposed to long-term, low-dose ionizing radiation, appear to be descendants of pets that citizens were forced to leave behind after the evacuation.

Mousseau, who has worked in the Chernobyl region since the late 1990s, began collecting blood from dogs around 2017. Some of the dogs live at the plant, others in a radius of 15 to 45 kilometers.

DNA analyzes may provide some further answers by providing insights into how animals and humans may live now and in the future in regions of the world under "constant environmental assault and in contaminated environments."

Regarding the effects of radiation exposure on wildlife in the exclusion zone, several studies have shown "a large reduction in bird populations and an increase in genetic mutations in some species in areas with higher radiation levels."

Another unresolved question concerns the possibility that the mutations observed in the new generations are due to the small amounts of ongoing radiation to which the animals continue to be exposed, or are inherited from previous generations that experienced the blast. Or both.

"The new analysis, which characterized dogs living in and around the Chernobyl zone, sheds light on the differences in the genome of the species, revealing that the animals are genetically distinct," the authors of the study point out in their paper.


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