Elena Pazhenkova, a doctoral student at St Petersburg University (left) and Vladimir Lukhtanov, Principal Researcher at the Zoological Institute of the Russian Academy of Sciences and Professor at St Petersburg University (right), during their expedition to Mongolia in 2019 (IMAGE)

St. Petersburg State University

Elena Pazhenkova, a doctoral student at St Petersburg University (left) and Vladimir Lukhtanov, Principal Researcher at the Zoological Institute of the Russian Academy of Sciences and Professor at St Petersburg University (right), during their expedition to Mongolia in 2019

Caption

Fritillary butterflies preserve genetic diversity and survive, sporadically interbreeding with their very distant relatives

Credit

Vladimir Lukhtanov

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