Butterflies released in Finland contained parasitic wasps – with more wasps inside

Butterflies released in Finland contained parasitic wasps – with more wasps inside

When caterpillars of a beautiful butterfly were introduced on to the tiny island of Sottunga in the Åland archipelago, scientists hoped to study how the emerging butterflies would disperse across the landscape. But researchers did not realise that their introduction of the Glanville fritillary (Melitaea cinxia) led to the emergence of three other species on […]

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