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flag Feral pig-boar hybrids in Fukushima's exclusion zone rapidly spread due to high fertility, diluting domestic DNA but boosting population growth.

flag After the 2011 Fukushima disaster, escaped domestic pigs interbred with wild boar in the evacuated zone, creating hybrids that thrive despite radiation. flag A 2015–2018 study of 201 animals found the pigs’ year-round breeding cycle sped up hybrid generation turnover, causing rapid dilution of domestic DNA, especially through maternal lines. flag While pig mitochondrial DNA faded after about five generations, the hybrid population grew quickly due to persistent high fertility. flag Researchers say this mechanism may explain invasive species surges where feral pigs and wild boar overlap, offering new insights for global wildlife management.

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